CN110031252B

CN110031252B - Electric layering quantitative collecting device for soil nematodes

Info

Publication number: CN110031252B
Application number: CN201910258993.5A
Authority: CN
Inventors: 张利敏; 于万辉; 林琳; 高梅香; 姜洪波
Original assignee: Harbin Normal University
Current assignee: Harbin Normal University
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2021-07-02
Anticipated expiration: 2039-03-25
Also published as: CN110031252A

Abstract

Electronic layering ration collection system of soil nematode belongs to soil zoology technical field, sign (3) by drill bit (1), a sample section of thick bamboo (2), the layering, lead a section of thick bamboo (4), the solid section of thick bamboo of signing (5) of pull, according to signing handle (6), battery (7), according to signing a handle section of thick bamboo (8), motor (9), motor branch section of thick bamboo (10), handle activity cabin (12), switch (13), power cord (14), a power cord section of thick bamboo (15), solid section of thick bamboo (16) on the rotor, sample lid (18), solid section of thick bamboo (23) under the rotor, rotor (26) are constituteed, its characterized in that: both sides of the upper end of the drawing and fixing swab barrel (5) are welded at the lower end of the swab pressing handle (6), the lower end is free, 2-4 circles of movable joints (27) are distributed on the drawing and fixing swab barrel wall (29), and each movable joint (27) is connected with one layered swab (3). The device is simple to manufacture, high in operability, low in cost and obvious in effect.

Description

Electric layering quantitative collecting device for soil nematodes

Technical Field

The invention relates to an electric layering and quantitative collecting device for soil nematodes, and belongs to the technical field of soil zoology.

Background

Nematodes are a general term for all helminths of the Nematoda class (Nematoda), one of the most abundant animals in the kingdom animalia, and one of the three major groups of soil animals, approximately 13000 species known to parasitize animals, plants, or free-living fish in soil, fresh water and marine environments. Usually in milky white, light yellow or brownish red, with large size differences, the small size being less than 1 mm and the large size being 8 m. Nematodes live in the water layer between soils and are very easy to culture in the laboratory because they feed on bacteria. Moreover, because the whole body is transparent, organs in the nematode body such as intestinal tracts, gonads and the like can be seen under a microscope without dyeing during research, and single cells (hundredth library) can be seen under a high-power phase contrast microscope, so the nematode has important research significance in scientific research. Particularly, in the aspect of soil animal ecology research, nematodes are one of the hot spots of people's research at present, and through the research, the community distribution of soil animals and the quality of the soil environment can be analyzed. However, how to collect nematodes in soil efficiently has no very effective method and tool, especially for electrically layered quantitative collection of nematodes. The traditional method for collecting soil nematodes includes the steps of smashing a cutting ring into soil by a hammer, digging out the cutting ring by a shovel, taking out the soil in the cutting ring and placing the soil in a bag, and taking the bag to a laboratory to separate nematode specimens. Therefore, how to use an electric tool to realize efficient, convenient, layered and quantitative collection of nematodes becomes a great problem which needs to be solved urgently, a storage battery is utilized to supply power to a motor, the motor drives a rotor to further drive a drill bit connected with the rotor to rotate, soil with a certain depth is conveniently and quickly collected into a sample cylinder, and then the soil in the sample cylinder is layered by using a layering pick, so that the purpose of efficient, convenient, electric, layered and quantitative collection of nematodes is achieved.

Disclosure of Invention

In order to overcome the problem of how to use an electric tool and realize efficient, convenient and fast layered and quantitative acquisition of nematodes, the invention provides the soil nematode electric layered and quantitative acquisition device, wherein a storage battery is utilized by the soil nematode electric layered and quantitative acquisition device to supply power to a motor, the motor drives a rotor so as to drive a drill bit connected with the rotor to rotate, soil with a certain depth is conveniently and quickly collected into a sample cylinder, and then a layered tag is used for layering the soil in the sample cylinder, so that the aim of efficiently, conveniently and fast electrically layered and quantitative acquisition of nematodes is fulfilled.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the invention relates to an electric layering quantitative collecting device for soil nematodes, which consists of a drill bit 1, a sample cylinder 2, a layering swab 3, a swab guide cylinder 4, a drawing and fixing cylinder 5, a swab pressing handle 6, a storage battery 7, a swab pressing handle cylinder 8, a motor 9, a motor support cylinder 10, a handle movable cabin 12, a power switch 13, a power line 14, a power line cylinder 15, a rotor upper fixing cylinder 16, a sampling cover hinge 17, a sampling cover 18, a sampling cover fixing seal 19, a rotor lower fixing cylinder support 22, a rotor lower fixing cylinder 23, a sample cylinder layering partition 24, a rotor upper fixing cylinder support 25, a rotor 26 and a movable joint 27, and is characterized in that: the drawing and fixing toothpick holder 5 is made of manganese steel and is cylindrical, two sides of the upper end of the drawing and fixing toothpick holder are welded at the lower end of the toothpick pressing handle 6, the lower end of the drawing and fixing toothpick holder is free, the wall of the periphery of the drawing and fixing toothpick holder 5 is a drawing and fixing toothpick holder wall 29, a cavity defined by the drawing and fixing toothpick holder wall 29 is a drawing and fixing toothpick holder cavity 28, the thickness of the drawing and fixing toothpick holder wall 29 is 0.5-1 mm, 2-4 circles of movable joints 27 are distributed on the outer surface of the drawing and fixing toothpick holder wall 29 at equal distances, 8-16 movable joints 27 are arranged in each circle, the angles between every two adjacent movable joints 27 are equal, and each movable joint 27 is; the swab handle 6 is made of manganese steel, the cross section of the swab handle is circular, the diameter of the circular swab handle is 1-2 cm, the upper end of the swab handle 6 is free, the part of the swab handle 6 at the free end is folded towards the central direction of the electric layering quantitative collecting device for the soil nematodes, and the length of the bent part is 3-5 cm, so that a handle for an operator to hold is formed; the lower part of the bent part is arranged in the label pressing handle barrel 8; the lower end of the stick pressing handle 6 is bent to the central direction and is welded on the outer surface of the cylinder wall at the upper end of the drawing and fixing cylinder 5; the handle activity cabin 12 is a part in which the label-pressing handle 6 can move up and down, is made of manganese steel or aluminum alloy, is cylindrical, the height of the handle activity cabin 12 is 20-30 cm, the cross section of the handle activity cabin 12 is circular, the diameter of the circular shape is 8-15 cm, the top wall of the handle activity cabin 12 is a handle activity cabin top cover 11, the outer surface of the handle activity cabin top cover 11 is welded with a rotor upper fixing barrel 16 and a rotor upper fixing barrel support 25, the wall around the handle activity cabin 12 is a side wall, and the label-pressing handle barrel 8 is welded at the symmetrical position above the side wall; the center of the handle activity cabin 12 is provided with a drawing and pulling solid pick cylinder 5 and a rotor 26, and the center of the lower bottom of the handle activity cabin 12 is welded with the upper end of the sample cylinder 2.

The drill bit 1 is a structure that the soil nematode electric layering quantitative acquisition device loosens soil and enables the whole device to submerge, the drill bit 1 is made of hard manganese steel, the structure and the function of the drill bit are the same as those of a well-known drill bit, the drill bit 1 can rotate under the driving of a rotor 26, the drill bit 1 is integrally conical, the conical bottom is the upper end at the upper part, the diameter of a circle where the upper end is located is 6-12 cm, the height of the cone is 5-10 cm, the conical tip is the lower end at the lower part, the lower end of the drill bit 1 is pointed, the upper end of the drill bit 1 is horizontal, the center of the upper end is connected with the lower end of the rotor 26, a spiral groove is formed in the surface where two sides of a triangle in a longitudinal section are located, and soil eaten by the pointed end of the drill; the rotor 26 is a rotating shaft in the center of the motor 9, extends outwards for a certain length, is movably fixed in the center of the upper bottom of the handle movable cabin 12 by the upper rotor fixing cylinder 16 after being taken out of the motor 9, is movably fixed at the lower end of the sample cylinder 2 by the lower rotor fixing cylinder 23 when going through the sample cylinder 2, and is welded in the center of the upper end of the drill bit 1, the rotor 26 is made of hard manganese steel, the structure and the function of the rotor are the same as those of a well-known rotor, the rotor 26 is integrally cylindrical, the diameter of the cylinder is 2-4 cm, the height of the cylinder is 40-50 cm, the upper end of the cylinder is fixed in the center of the motor 9, and the; the structure and the function of the motor 9 are the same as those of a well-known motor, the motor 9 is integrally cylindrical, the diameter of the cylinder is 5-10 cm, the height of the cylinder is 5-10 cm, the upper end of the motor 9 is free, and the lower end of the motor 9 is connected with a rotor upper fixed cylinder bracket 25 through a left motor support cylinder 10 and a right motor support cylinder 10; the number of the motor support cylinders 10 is 2, the motor 9 is supported and fixed on the rotor above the cylinder fixing support 25, each motor support cylinder 10 is made of manganese steel or aluminum alloy and is cylindrical, the diameter of the inner cavity of the cylinder is 1-2 cm, the thickness of the wall of the cylinder is 2-5 mm, the length of the cylinder is 1-2 cm, a power line 14 passes through the inner cavity of the motor support cylinder 10 after coming out of the motor 9, enters the power line cylinder 15, is connected with a power switch 13 and is finally connected to the storage battery 7; the structure and the function of the storage battery 7 are the same as those of a known storage battery, the storage battery 7 is integrally cylindrical, the diameter of the cylinder is 5-10 cm, the height of the cylinder is 4-8 cm, two sides of the cylinder are welded with a power supply wire barrel 15, and the two sides of the cylinder are fixedly arranged between a left label pressing handle 6 and a right label pressing handle 6 by the power supply wire barrel 15 and the label pressing handle barrel 8; the power switch 13 is structurally and functionally similar to a known power switch; the power line 14 is a well-known double-strand copper core power line, the cross section of the copper core is circular, the diameter of the circular is 0.5-2 mm, one end of the circular is connected to the motor 9, the other end of the circular is connected to the storage battery 7, and the middle of the circular is protected by a motor support cylinder 10 and a power line cylinder 15 and connected to a power switch 13; the outer diameter of the power wire cylinder 15 is 1-2 cm, the wall thickness of the cylinder is 1-2 mm, the power wire cylinder 15 is made of manganese steel or aluminum alloy, and the part of the power wire cylinder 15 on the inner side of the label pressing handle cylinder 8 is welded with the label pressing handle cylinder 8; the rotor upper fixed cylinder 16 is a metal cylinder which is positioned in the center of the upper bottom of the handle movable cabin 12 and is used for movably fixing the rotor 26, is made of manganese steel or aluminum alloy, is connected with rotor upper fixed cylinder brackets 25 on the left side and the right side, and is firmly connected with the handle cylinder 8 through the rotor upper fixed cylinder brackets 25, the rotor upper fixed cylinder 16 is cylindrical, the diameter of the inner cavity of the cylinder is 1-2 cm, the thickness of the wall of the cylinder is 1-2 cm, the length of the cylinder is 1-2 cm, the rotor upper fixed cylinder 16 is provided with a bearing, and the inner ring of the bearing is fixedly provided with the rotor 26; the rotor upper fixed cylinder support 25 is a support for fixing the rotor upper fixed cylinder 16 on the inner side of the label pressing handle cylinder 8, the left side and the right side of the rotor upper fixed cylinder 16 are respectively provided with 1, the rotor upper fixed cylinder support 25 is made of manganese steel or aluminum alloy and is cylindrical, the diameter of the cylinder is 1-2 cm, the height of the cylinder is 3-5 cm, one end of the rotor upper fixed cylinder support 25 is welded in the center of the side surface of the rotor upper fixed cylinder 16, and the other end of the rotor upper fixed cylinder support 25 is welded on the inner side of the label pressing handle cylinder 8; the rotor lower fixed cylinder support 22 is a support for fixing the rotor lower fixed cylinder 23 on the inner side of the lower end of the sample cylinder 2, the left side and the right side of the rotor lower fixed cylinder 23 are respectively provided with 1, the rotor lower fixed cylinder support 22 is made of manganese steel or aluminum alloy and is cylindrical, the diameter of the cylinder is 1-2 cm, the height of the cylinder is 3-5 cm, one end of the rotor lower fixed cylinder support 22 is welded in the center of the side face of the rotor lower fixed cylinder 23, and the other end of the rotor lower fixed cylinder support is welded on the inner side of the lower end of the sample; the rotor lower fixed cylinder 23 is a metal cylinder which is positioned in the center of the lower end of the sample cylinder 2 and used for movably fixing the rotor 26, is made of manganese steel or aluminum alloy, the left side and the right side are both connected with rotor lower fixed cylinder brackets 22, the rotor lower fixed cylinder 23 is firmly connected with the sample cylinder 2 through the rotor lower fixed cylinder brackets 22, the rotor lower fixed cylinder 23 is cylindrical, the diameter of the inner cavity of the cylinder is 1-2 cm, the thickness of the wall of the cylinder is 1-2 cm, the length of the cylinder is 1-2 cm, a bearing is arranged in the rotor lower fixed cylinder 23, and the rotor 26 is fixed on the inner ring of the bearing.

The wall around the sample cylinder 2 is a sample cylinder wall 20, the sample cylinder wall 20 is made of manganese steel or aluminum alloy, and the thickness is 1-2 cm; the cavity surrounded by the sample cylinder wall 20 is a sample cylinder cavity 21, the height of the sample cylinder cavity 21 is 20-30 cm, the cross section of the sample cylinder cavity 21 is circular, the diameter of the circular shape is 5-10 cm, the sample cylinder cavity 21 is divided into 3-5 sections from top to bottom, the height of each section is 5-10 cm, a sample cylinder layered partition 24 is arranged between every two adjacent sections, the sample cylinder layered partition 24 is a bulge protruding outwards from the outer surface of the sample cylinder 2, the cross section of the bulge is semicircular, the diameter of the semicircle is 1-2 mm, and the sample cylinder layered partition 24 is made of manganese or steel aluminum alloy; a sampling cover 18 is arranged on the sample cylinder wall 20 corresponding to each section of the sample cylinder cavity 21, and the sample cylinder wall 20 is not arranged at the position of the sampling cover 18; the sampling cover hinges 17 are connecting parts between one edge of the sampling cover 18 in the vertical direction and the sample cylinder wall 20, and 2-3 sampling cover hinges (17) are arranged between one edge of the sampling cover (18) in the vertical direction and the sample cylinder wall (20); the structure and the function of the sampling cover fixing seal 19 are the same as those of a known belt buckle, and the belt buckle comprises a tightening belt and a buckle ring, wherein one end of the tightening belt is connected to the center of the other edge of the sampling cover hinge 17 in the up-down direction of the sampling cover 18, the tightening belt is made of leather, plastic or tinplate iron, the tightening belt is in a long belt shape, the width of the long belt is 2-3 cm, the thickness of the long belt is 0.5-1 mm, the length of the long belt is 5-10 cm, and the other end of the tightening belt penetrates through the buckle ring and then is free; the retaining ring is a member that can hold the tightening belt so that the tightening belt cannot slide back and forth, and is fixed to the specimen tube wall 20.

The layering sticks 3 are movable metal sticks fixed on the outer surface of the drawing solid stick barrel 5 by a movable joint 27, the metal sticks are made of manganese steel, the upper and lower circles are arranged on the outer surface of the drawing solid stick barrel 5 for 2-4 circles, and each circle is provided with 8-16 layering sticks 3; the movable joint 27 is an outward bulge on the outer surface of the drawing and fixing swab cylinder 5, the middle of the movable joint 27 is hollow, a transverse shaft perpendicular to the long shaft of the sample cylinder 2 is arranged in the middle of the movable joint 27, and the size of the transverse shaft is matched with that of the layered swab rotating shaft hole 33; the layered swab head 32 is cylindrical, 1 circular hole-shaped layered swab rotating shaft hole 33 is formed in the center of the cylinder, and the size of the circular hole of the layered swab rotating shaft hole 33 is matched with the transverse shaft, perpendicular to the long shaft of the sample cylinder 2, in the middle of the movable joint 27; the lower part of the layering pick head 32 is connected with a layering pick body 31, the cross section of the layering pick body 31 is rectangular, the length of the rectangle is 2-5 mm, the width of the rectangle is 0.5-1 mm, and the length of the layering pick body 31 is 2-5 cm; the layered pick blade 30 is a thinned part of the free end of the layered pick body 31, the width of the rectangular cross section of the layered pick blade 30 at the thinnest part is 0.1-0.2 mm, the width of the whole layered pick blade 30 is 0.5-1 cm, the free end of the layered pick body 31 is in a blade shape, and an included angle of 10-20 degrees is formed between the layered pick blade 30 and the layered pick body 31.

The lead-in barrel 4 is made of manganese steel and is cylindrical, the thickness of the wall of the lead-in barrel 4 is 0.5-1 mm, the upper end of the lead-in barrel 4 is welded at the center of the bottom of the handle movable cabin 12, the lower end of the lead-in barrel is welded at the center of the upper surface of the rotor lower fixed barrel 23, a rectangular layered tag through hole 34 is formed in each layered tag blade 30, the length of each layered tag through hole 34 is 2.2-5.2 mm, the width of each rectangle is 0.52-1.2 mm, and when the layered tag blades 30 do not extend out, the layered tag blades 30 are plugged in the layered tag through holes 34.

The electric layering and quantitative collecting device for the soil nematodes has the advantages that the storage battery is used for supplying power to the motor, the motor drives the rotor, the drill bit connected with the rotor is further driven to rotate, soil at a certain depth is conveniently and quickly collected into the sample cylinder, and then the soil in the sample cylinder is layered by the layering stick, so that the aim of efficiently, conveniently and electrically layering and quantitatively collecting the nematodes is fulfilled. The device for the electric layering quantitative collecting device for the soil nematodes is simple to manufacture, strong in operability, low in cost and obvious in effect.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the electric layering quantitative collecting device for soil nematodes.

FIG. 2 is a schematic diagram of a longitudinal section structure of the electric layering quantitative collecting device for soil nematodes.

FIG. 3 is a schematic diagram of the overall structure of a drawing solid swab barrel of the electric layering quantitative collecting device for soil nematodes.

FIG. 4 is a schematic view of the overall structure of a layering pick of the electric layering and quantitative collecting device for soil nematodes.

FIG. 5 is a schematic view of the overall structure of a guide sleeve of the electric layering quantitative collecting device for soil nematodes.

In the figure, 1, a drill bit, 2, a sample cylinder, 3, a layered label, 4, a label guiding cylinder, 5, a drawing and fixing cylinder, 6, a label pressing handle, 7, a storage battery, 8, a label pressing handle cylinder, 9, a motor, 10, a motor support cylinder, 11, a handle movable cabin top cover, 12, a handle movable cabin, 13, a power switch, 14, a power line, 15, a power line cylinder, 16, a rotor upper fixing cylinder, 17, a sampling cover hinge, 18, a sampling cover, 19, a sampling cover fixed seal, 20, a sample cylinder wall, 21, a sample cylinder cavity, 22, a rotor lower fixing cylinder support, 23, a rotor lower fixing cylinder, 24, a sample cylinder layered partition, 25, a rotor upper fixing cylinder support, 26, a rotor, 27, a movable joint, 28, a drawing and fixing cylinder cavity, 29, a drawing and fixing cylinder wall, 30, a layered label blade, 31, a layered label body, 32, a layered label head, 33, a layered label hole and 34, a layered perforation are formed.

Detailed Description

The first embodiment is as follows:

as shown in the figure, the electric layering quantitative collecting device for the soil nematodes is composed of a drill bit 1, a sample cylinder 2, a layering swab 3, a swab guide cylinder 4, a drawing and fixing cylinder 5, a swab pressing handle 6, a storage battery 7, a swab pressing handle cylinder 8, a motor 9, a motor support cylinder 10, a handle movable cabin top cover 11, a handle movable cabin 12, a power switch 13, a power line 14, a power line cylinder 15, a rotor upper fixing cylinder 16, a sampling cover hinge 17, a sampling cover 18, a sampling cover fixing seal 19, a sample cylinder wall 20, a sample cylinder cavity 21, a rotor lower fixing cylinder support 22, a rotor lower fixing cylinder 23, a sample cylinder layering partition 24, a rotor upper fixing cylinder support 25, a rotor 26, a movable joint 27, a drawing and fixing cylinder cavity 28, a drawing and fixing cylinder wall 29, a layering swab blade 30, a layering swab body 31, a layering rotating shaft head 32, a layering swab hole 33 and a layering swab perforation 34. The drill bit 1 is a structure for loosening soil and enabling the whole device to submerge by an electric layering quantitative collecting device for soil nematodes, the drill bit 1 is made of hard manganese steel, the structure and the function of the drill bit are the same as those of a well-known drill bit, the drill bit 1 can rotate under the drive of a rotor 26, the drill bit 1 is integrally conical, the upper end of the conical bottom is the upper end, the diameter of a circle where the upper end is located is 6-12 cm, the height of the conical is 5-10 cm, the lower end of the conical tip is the lower end, the lower end of the drill bit 1 is pointed, the upper end of the drill bit 1 is horizontal, the center of the upper end is connected with the lower end of the rotor 26, the surface where two waists of a triangle in a longitudinal section are located is equivalent to be provided with a spiral groove, and soil eaten. The rotor 26 is a rotating shaft in the center of the motor 9, extends outwards for a certain length, is movably fixed in the center of the upper bottom of the handle movable cabin 12 by the rotor upper fixing cylinder 16 after being taken out of the motor 9, is movably fixed at the lower end of the sample cylinder 2 by the rotor lower fixing cylinder 23 when passing through the sample cylinder 2, and is welded in the center of the upper end of the drill bit 1, so that the motor 9, the rotor 26 and the drill bit 1 are connected into a whole, the rotor 26 transmits the force generated after the motor 9 is electrified to the drill bit 1, the drill bit 1 can drill up and down in soil, the rotor 26 is made of hard manganese steel, the structure and the function of the rotor are the same as those of a well-known rotor, the rotor 26 is integrally cylindrical, the diameter of the cylinder is 2-4 cm, the height of the cylinder is 40-50 cm, the upper end of the cylinder is fixed in the center. The structure and the function of the motor 9 are the same as those of a well-known motor, under the condition that the storage battery 7 supplies power to the motor through the power line 14, the rotor 26 can be driven to drive the drill bit 1 connected with the rotor 26 to rotate, so that the drill bit 1 can drill up and down in soil, the motor 9 is integrally cylindrical, the diameter of the cylinder is 5-10 cm, the height of the cylinder is 5-10 cm, the upper end of the motor 9 is free, and the lower end of the motor 9 is connected with the rotor upper fixed cylinder support 25 through the left motor support cylinder 10 and the right motor support cylinder 10. The number of the motor support cylinders 10 is 2, the motor 9 is supported and fixed on the rotor above the cylinder fixing support 25, each motor support cylinder 10 is made of manganese steel or aluminum alloy and is cylindrical, the diameter of the inner cavity of the cylinder is 1-2 cm, the thickness of the wall of the cylinder is 2-5 mm, the length of the cylinder is 1-2 cm, a power line 14 penetrates through the inner cavity of the motor support cylinder 10 after coming out of the motor 9 and enters the power line cylinder 15, and then the power line is connected with a power switch 13 and finally connected to the storage battery 7. The storage battery 7 has the same structure and function as the known storage battery, can be repeatedly charged and discharged, and can supply power for the motor 9 by turning on the power switch 13 after charging, so that the motor 9 works, the rotary head 1 goes deep into soil to achieve the purpose of soil taking, the storage battery 7 is integrally cylindrical, the diameter of the cylinder is 5-10 cm, the height of the cylinder is 4-8 cm, two sides of the cylinder are welded with the power wire cylinder 15, and the storage battery is fixed between the left and right two label pressing handles 6 by the power wire cylinder 15 and the label pressing handle cylinder 8. The structure and function of the power switch 13 are the same as those of the well-known power switch, the circuit of the whole motor 9 is smooth when the button is pressed, the storage battery 7 continuously supplies power for the motor 9, the bullet device is loosened when the button is pressed again, the circuit of the whole motor 9 is disconnected, and the motor 9 stops working. The power line 14 is a well-known double-strand copper core power line, the cross section of the copper core is circular, the diameter of the circular is 0.5-2 mm, one end of the copper core is connected to the motor 9, the other end of the copper core is connected to the storage battery 7, the middle of the copper core is protected by a motor support cylinder 10 and a power line cylinder 15 and is connected with the power switch 13, and the existence of current in the power line 14 is realized under the control of the power switch 13. The power cord cylinder 15 is a metal long cylinder with the power cord 14 arranged inside to protect the power cord 14 from being exposed outside, the outer diameter of the cylinder is 1-2 cm, the wall thickness of the cylinder is 1-2 mm, the power cord cylinder 15 is made of manganese steel or aluminum alloy, and the part of the power cord cylinder 15 on the inner side of the label pressing handle cylinder 8 is welded with the label pressing handle cylinder 8. The rotor upper fixed cylinder 16 is a metal cylinder which is positioned in the center of the upper bottom of the handle movable cabin 12 and used for movably fixing a rotor 26, is made of manganese steel or aluminum alloy, the left side and the right side of the rotor upper fixed cylinder are both connected with rotor upper fixed cylinder brackets 25, the rotor upper fixed cylinder 16 is firmly connected with the handle pressing cylinder 8 through the rotor upper fixed cylinder brackets 25, the rotor upper fixed cylinder 16 is cylindrical, the diameter of the inner cavity of the cylinder is 1-2 cm, the thickness of the wall of the cylinder is 1-2 cm, the length of the cylinder is 1-2 cm, the rotor upper fixed cylinder 16 is provided with a bearing, the inner ring of the bearing is fixedly provided with the rotor 26, and the rotor 26 is fixedly arranged between the rotor upper fixed cylinder 16 and the rotor 26 through the bearing, so that the rotor 26 can rotate in the rotor upper fixed cylinder 16 while being. The rotor upper fixed cylinder support 25 is a support for fixing the rotor upper fixed cylinder 16 on the inner side of the label pressing handle cylinder 8, the left side and the right side of the rotor upper fixed cylinder 16 are respectively provided with 1, the rotor upper fixed cylinder support 25 is made of manganese steel or aluminum alloy and is cylindrical, the diameter of the cylinder is 1-2 cm, the height of the cylinder is 3-5 cm, one end of the rotor upper fixed cylinder support 25 is welded in the center of the side face of the rotor upper fixed cylinder 16, and the other end of the rotor upper fixed cylinder support is welded on the inner side of the label pressing handle cylinder 8. The lower rotor fixed cylinder support 22 is a support for fixing the lower rotor fixed cylinder 23 on the inner side of the lower end of the sample cylinder 2, the left side and the right side of the lower rotor fixed cylinder 23 are respectively provided with 1, the lower rotor fixed cylinder support 22 is made of manganese steel or aluminum alloy and is cylindrical, the diameter of the cylinder is 1-2 cm, the height of the cylinder is 3-5 cm, one end of the lower rotor fixed cylinder support 22 is welded in the center of the side face of the lower rotor fixed cylinder 23, and the other end of the lower rotor fixed cylinder support is welded on the inner side of the lower end of the sample. The lower rotor fixing tube 23 is a metal cylinder which is positioned in the center of the lower end of the sample tube 2 and used for movably fixing the rotor 26, is made of manganese steel or aluminum alloy, the left side and the right side of the lower rotor fixing tube are both connected with the lower rotor fixing tube support 22, the lower rotor fixing tube 23 is firmly connected with the sample tube 2 through the lower rotor fixing tube support 22, the lower rotor fixing tube 23 is cylindrical, the diameter of the inner cavity of the cylinder is 1-2 cm, the thickness of the wall of the cylinder is 1-2 cm, the length of the cylinder is 1-2 cm, a bearing is arranged in the lower rotor fixing tube 23, the rotor 26 is fixed on the inner ring of the bearing, and the rotor 26 can rotate in the lower rotor fixing tube 23 while being fixed by the lower rotor fixing tube 23, so that movable connection is realized. The sample cylinder 2 is a cylinder for containing soil collected by the drill bit 1 through a groove on the surface of the drill bit 1 after the drill bit 1 drills, the surrounding wall is a sample cylinder wall 20, the sample cylinder wall 20 is made of manganese steel or aluminum alloy, and the thickness is 1-2 cm; the cavity defined by the sample cylinder wall 20 is a sample cylinder cavity 21, the height of the sample cylinder cavity 21 is 15-50 cm, the cross section of the sample cylinder cavity 21 is circular, the diameter of the circular cavity is 5-10 cm, the sample cylinder cavity 21 is divided into 3-5 sections from top to bottom, the height of each section is 5-10 cm, a sample cylinder layered partition 24 is arranged between every two adjacent sections, the sample cylinder layered partition 24 is a bulge protruding outwards from the outer surface of the sample cylinder 2, the cross section of the bulge is semicircular, the diameter of the semicircle is 1-2 mm, the sample cylinder layered partition 24 is made of manganese steel or aluminum alloy, and the sample cylinder layered partition 24 is used for displaying the height position of sample soil in the sample cylinder 2 so that an operator can guide where to take out the soil from the sample cylinder 2 after collecting the soil. All set up a sample lid 18 on the sample section of thick bamboo wall 20 that every section of sample section of thick bamboo chamber 21 corresponds, sample lid 18 department does not have a sample section of thick bamboo wall 20, can regard sample lid 18 to cut sample section of thick bamboo wall 20 and reuse sample lid hinge 17 and sample lid solid seal 19 with the structure of sample lid 18 refastening on sample section of thick bamboo wall 20, open sample lid 18, can take out the soil in the sample section of thick bamboo chamber 21 from a sample section of thick bamboo 2, close sample lid 18, whole sample section of thick bamboo wall 20 resumes to cylindricly, can receive the soil that drill bit 1 swivelling conveying came in. The sampling cover hinges 17 are connecting parts between one edge of the sampling cover 18 in the vertical direction and the sample cylinder wall 20, and 2-3 sampling cover hinges 17 are arranged between one edge of the sampling cover 18 in the vertical direction and the sample cylinder wall 20; the sampling lid hinge 17 has a structure and a function similar to those of a known hinge, and can fix the sampling lid 18 to the sample cylinder wall 20 in a movable manner. The structure and the function of the sampling cover fixing seal 19 are the same as those of a known belt buckle, and the belt buckle comprises a tightening belt and a buckle ring, wherein one end of the tightening belt is connected to the center of the other edge of the sampling cover hinge 17 in the up-down direction of the sampling cover 18, the tightening belt is made of leather, plastic or tinplate iron, the tightening belt is in a long belt shape, the width of the long belt is 2-3 cm, the thickness of the long belt is 0.5-1 mm, the length of the long belt is 5-10 cm, and the other end of the tightening belt penetrates through the buckle ring and then is free; the buckle can compress tightly the tight belt and make the tight belt can not make a round trip to gliding part, fixes on appearance section of thick bamboo wall 20, loosens the buckle, unties the tight belt, and sample lid 18 is opened promptly, and the soil in appearance section of thick bamboo cavity 21 can be taken out from appearance section of thick bamboo 2, passes the buckle with the tight belt, and taut tight belt can be fixed sample lid 18 on appearance section of thick bamboo wall 20, and then makes appearance section of thick bamboo 2 receive the soil that drill bit 1 swivelling conveying came in, lets soil fill full appearance section of thick bamboo cavity 21. The layering sticks 3 are movable metal sticks fixed on the outer surface of the drawing solid stick barrel 5 through a movable joint 27, the movable metal sticks are made of manganese steel, the upper and lower 2-4 circles are arranged on the outer surface of the drawing solid stick barrel 5, 8-16 layering sticks 3 are arranged in each circle, after the sample barrel cavity 21 is filled with soil, the pressing stick handle 6 is pressed down to enable the drawing solid stick barrel 5 to move downwards, the layering sticks 3 extend out of the lead stick barrel 4 from the layering stick through holes 34 and are inserted into the soil in the sample barrel cavity 21, and therefore the soil is divided into 3-5 layers. The movable joint 27 is an outward bulge on the outer surface of the drawing fixed swab cylinder 5, the middle of the movable joint is hollow and is used for accommodating the layered swab head 32, a transverse shaft perpendicular to the long axis of the sample cylinder 2 is arranged in the middle of the movable joint 27, and the size of the transverse shaft is matched with that of the layered swab rotating shaft hole 33, so that the layered swab head 32 can rotate up and down in the movable joint 27. The layering pick head 32 is cylindrical, 1 round hole-shaped layering pick rotating shaft hole 33 is formed in the center of the cylinder, and the size of the round hole of the layering pick rotating shaft hole 33 is matched with the transverse shaft perpendicular to the long shaft of the sample cylinder 2 in the middle of the movable joint 27, so that the layering pick head 32 can rotate up and down in the movable joint 27. The lower part of the layering pick head 32 is connected with a layering pick body 31, the cross section of the layering pick body 31 is rectangular, the length of the rectangle is 2-5 mm, the width of the rectangle is 0.5-1 mm, and the length of the layering pick body 31 is 2-5 cm. The layering pick blade 30 is a part with the thinned free end of the layering pick body 31, the width of the rectangle of the cross section of the thinnest layering pick blade 30 is 0.1-0.2 mm, the width of the whole layering pick blade 30 is 0.5-1 cm, the free end of the layering pick body 31 is in a blade shape, and an included angle of 10-20 degrees is formed between the layering pick blade 30 and the layering pick body 31, so that the layering pick 3 can smoothly penetrate through the layering pick through hole 34 on time under the pick handle 6, and the purpose of layering soil in the sample cylinder 2 is achieved. The swab guide barrel 4 is made of manganese steel and is cylindrical, the thickness of the wall of the swab guide barrel 4 is 0.5-1 mm, the upper end of the swab guide barrel 4 is welded in the center of the bottom of the handle movable cabin 12, the lower end of the swab guide barrel is welded in the center of the upper surface of the rotor lower fixed barrel 23, a rectangular layering swab through hole 34 is formed in each layering swab blade 30, the length of each layering swab through hole 34 is 2.2-5.2 mm, the width of each rectangle is 0.52-1.2 mm, and when the layering swab blade 30 does not extend out, the layering swab blade 30 is plugged in the layering swab through hole 34 so as to prevent soil in the swab barrel cavity 21 from entering the swab guide barrel 4. The drawing and fixing swab cylinder 5 is made of manganese steel and is cylindrical, two sides of the upper end of the drawing and fixing swab cylinder are welded at the lower end of the swab pressing handle 6, the lower end of the drawing and fixing swab cylinder is free, the drawing and fixing swab cylinder 5 can be pressed down or pulled up by pressing the swab pressing handle 6, the layered swabs 3 are driven to enter and exit the layered swab through holes 34, soil in the sample cylinder 2 can be layered after the layered swab through holes 34 extend out, the peripheral wall of the drawing and fixing swab cylinder 5 is a drawing and fixing swab cylinder wall 29, a cavity defined by the drawing and fixing swab cylinder wall 29 is a drawing and fixing swab cavity 28, the thickness of the drawing and fixing swab cylinder wall 29 is 0.5-1 mm, 2-4 circles of movable joints 27 are distributed on the outer surface of the drawing and fixing swab cylinder wall 29 at equal distances, 8-16 movable joints 27 are arranged in each circle, the angles between every. The swab handle 6 is made of manganese steel, the cross section of the swab handle is circular, the diameter of the circular swab handle is 1-2 cm, the upper end of the swab handle 6 is free, the part of the swab handle 6 at the free end is folded towards the central direction of the electric layering quantitative collecting device for the soil nematodes, and the length of the bent part is 3-5 cm, so that a handle for an operator to hold is formed; the lower part of the bent part is arranged in the label-pressing handle barrel 8 and can move up and down for 5-10 cm in the label-pressing handle barrel 8 so as to extend or pull the layered label 3 into the soil in the sample barrel 2; the lower end of the pressing handle 6 is bent towards the central direction and welded on the outer surface of the upper end cylinder wall of the drawing fixed pick cylinder 5, so that the pressing handle 6 and the drawing fixed pick cylinder 5 are connected into a whole. The handle activity cabin 12 is a part in which the label pressing handle 6 can move up and down, is made of manganese steel or aluminum alloy, is cylindrical, the height of the handle activity cabin 12 is 20-30 cm, the cross section of the handle activity cabin 12 is circular, the diameter of the circular shape is 8-15 cm, the top wall of the handle activity cabin 12 is a handle activity cabin top cover 11, the outer surface of the handle activity cabin top cover 11 is welded with a rotor upper fixed cylinder 16 and a rotor upper fixed cylinder support 25, the wall around the handle activity cabin 12 is a side wall, and the label pressing handle cylinders 8 are welded at symmetrical positions above the side wall, so that the label pressing handle 6 can move up and down in the label pressing handle cylinder 8 and the handle activity cabin 12, and the drawing label fixing cylinder 5 is driven to move up and down; the drawing and fixing swab cylinder 5 and the rotor 26 are arranged in the center of the handle movable cabin 12, and the center of the lower bottom of the handle movable cabin 12 is welded with the upper end of the sample cylinder 2, so that the drawing and fixing swab cylinder 5 can move up and down along with the drawing and fixing swab handle 6 when being drawn up and down.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. Electronic layering ration collection system of soil nematode, sign (3) by drill bit (1), a sample section of thick bamboo (2), the layering, lead a section of thick bamboo (4), the solid a section of thick bamboo of pull (5), according to signing handle (6), battery (7), according to signing a handle section of thick bamboo (8), motor (9), a motor section of thick bamboo (10), handle movable chamber (12), switch (13), power cord (14), a power cord section of thick bamboo (15), solid section of thick bamboo (16) on the rotor, sample lid hinge (17), sample lid (18), sample lid seals admittedly (19), solid section of thick bamboo support (22) under the rotor, solid section of thick bamboo (23) under the rotor, solid section of thick bamboo support (25) on the rotor, rotor (26) are constituteed, its characterized in that: the drill bit (1) is of a structure that the soil nematode electric layering quantitative collecting device loosens soil and enables the whole device to submerge, the lower end of the drill bit (1) is sharp, the upper end of the drill bit (1) is horizontal, the center of the upper end is connected with the lower end of a rotor (26), the surface where two waists of a triangle in a longitudinal section are located is provided with a spiral groove, and soil eaten by the sharp end of the drill bit (1) can move upwards along the spiral groove on the surface and enter a sample cylinder cavity (21) in the rotating process; the rotor (26) is a rotating shaft in the center of the motor (9), extends outwards for a certain length, is movably fixed in the center of the upper bottom of the handle movable cabin (12) by the upper rotor fixed cylinder (16) after being discharged out of the motor (9), is movably fixed at the lower end of the sample cylinder (2) by the lower rotor fixed cylinder (23) when passing through the sample cylinder (2), is welded in the center of the upper end of the drill bit (1), the upper end of the motor (9) is free, and the lower end of the motor (9) is connected with the upper rotor fixed cylinder support (25) through the left motor support cylinder (10) and the right motor support cylinder (10); after coming out of the motor (9), a power line (14) passes through the inner cavity of the motor support cylinder (10), enters the power line cylinder (15), is connected with a power switch (13), and is finally connected with the storage battery (7); two sides of the storage battery (7) are welded with the power wire barrel (15) and are fixedly arranged between the left and right label pressing handles (6) by the power wire barrel (15) and the label pressing handle barrel (8); the rotor upper fixed cylinder (16) is a metal cylinder which is positioned in the center of the upper bottom of the handle movable cabin (12) and is used for movably fixing the rotor (26), is made of manganese steel or aluminum alloy, is connected with rotor upper fixed cylinder brackets (25) on the left side and the right side, and is firmly connected with the handle cylinder (8) of the label pressing through the rotor upper fixed cylinder brackets (25); the rotor upper fixed cylinder (16) is provided with a bearing, and a rotor (26) is fixed on an inner ring of the bearing; the rotor upper fixed cylinder bracket (25) is a bracket for fixing the rotor upper fixed cylinder (16) on the inner side of the handle cylinder (8) of the label pressing handle, and the left side and the right side of the rotor upper fixed cylinder (16) are respectively provided with 1; one end of the rotor upper fixed cylinder bracket (25) is welded at the center of the side surface of the rotor upper fixed cylinder (16), and the other end is welded at the inner side of the label pressing handle cylinder (8); the rotor lower fixed cylinder bracket (22) is a bracket for fixing the rotor lower fixed cylinder (23) on the inner side of the lower end of the sample cylinder (2), and the left side and the right side of the rotor lower fixed cylinder (23) are respectively provided with 1; one end of the rotor lower fixed cylinder bracket (22) is welded at the center of the side surface of the rotor lower fixed cylinder (23), and the other end is welded at the inner side of the lower end of the sample cylinder (2); the rotor lower fixed cylinder (23) is a metal cylinder which is positioned in the center of the lower end of the sample cylinder (2) and is used for movably fixing the rotor (26), is made of manganese steel or aluminum alloy, is connected with rotor lower fixed cylinder supports (22) on the left side and the right side, and is firmly connected with the sample cylinder (2) through the rotor lower fixed cylinder supports (22); the wall around the sample cylinder (2) is a sample cylinder wall (20), a cavity surrounded by the sample cylinder wall (20) is a sample cylinder cavity (21), the sample cylinder cavity (21) is divided into 3-5 sections from top to bottom, the height of each section is 5-10 cm, the sample cylinder is separated by layers (24) between every two adjacent sections, a sample cover (18) is arranged on the sample cylinder wall (20) corresponding to each section of the sample cylinder cavity (21), a sample cover hinge (17) is a connecting part between one edge of the sample cover (18) in the vertical direction and the sample cylinder wall (20), a sample cover solid seal (19) comprises a tensioning belt and a retaining ring, one end of the tensioning belt is connected to the center of the other edge of the sample cover (18) in the vertical direction relative to the sample cover hinge (17), and the other end of the tensioning belt passes through the retaining ring and then is free; the retaining ring is a component which can compress the tightening belt to prevent the tightening belt from sliding back and forth and is fixed on the sample tube wall (20); the layered sticks (3) are movable metal sticks fixed on the outer surface of the drawing solid stick barrel (5) by a movable joint (27), the metal sticks are made of manganese steel, the upper and lower circles are arranged on the outer surface of the drawing solid stick barrel (5), and each circle is provided with 8-16 layered sticks (3); the movable joint (27) is an outward bulge on the outer surface of the drawing and fixing swab cylinder (5), the middle of the movable joint (27) is hollow, a transverse shaft perpendicular to the long axis of the sample cylinder (2) is arranged in the middle of the movable joint (27), and the size of the transverse shaft is matched with that of the layered swab rotating shaft hole (33), so that the layered swab head (32) can rotate up and down in the movable joint (27); the upper end of the label guiding barrel (4) is welded at the center of the lower bottom of the handle movable cabin (12), the lower end of the label guiding barrel is welded at the center of the upper surface of the rotor lower fixed barrel (23), and a rectangular layering label through hole (34) is formed at each layering label blade (30); the drawing and fixing toothpick holder (5) is made of manganese steel and is cylindrical, two sides of the upper end of the drawing and fixing toothpick holder are welded to the lower end of the toothpick pressing handle (6), the lower end of the drawing and fixing toothpick holder is free, the wall of the periphery of the drawing and fixing toothpick holder (5) is a drawing and fixing toothpick holder wall (29), a cavity defined by the drawing and fixing toothpick holder wall (29) is a drawing and fixing toothpick holder cavity (28), the thickness of the drawing and fixing toothpick holder wall (29) is 0.5-1 mm, 2-4 circles of movable joints (27) are distributed on the outer surface of the drawing and fixing toothpick holder wall (29) at equal distances, 8-16 movable joints (27) are arranged in each circle, the angles between every two adjacent movable joints (27) are equal, and each movable joint (27) is connected with one layered; the swab handle (6) is made of manganese steel, the cross section of the swab handle is circular, the diameter of the circular swab handle is 1-2 cm, the upper end of the swab handle (6) is free, the part of the swab handle (6) at the free end is folded towards the central direction of the electric layering quantitative collecting device for the soil nematodes, and the length of the bent part is 3-5 cm, so that a handle for an operator to hold is formed; the lower part of the bent part is arranged in the label pressing handle barrel (8); the lower end of the stick pressing handle (6) is bent to the central direction and is welded on the outer surface of the upper end cylinder wall of the drawing and fixing cylinder (5); the handle moving cabin (12) is a part in which the label pressing handle (6) can move up and down, is made of manganese steel or aluminum alloy and is cylindrical, the height of the handle moving cabin (12) is 20-30 cm, the cross section of the handle moving cabin (12) is circular, the diameter of the circle is 8-15 cm, the top wall of the handle moving cabin (12) is a handle moving cabin top cover (11), a rotor upper fixing barrel (16) and a rotor upper fixing barrel support (25) are welded on the outer surface of the handle moving cabin top cover (11), the walls around the handle moving cabin (12) are side walls, and the label pressing handle barrels (8) are welded at symmetrical positions above the side walls; the center of the handle activity cabin (12) is provided with a drawing and pulling solid pick cylinder (5) and a rotor (26), and the center of the lower bottom of the handle activity cabin (12) is welded with the upper end of the sample cylinder (2).

2. The soil nematode electric layering and quantitative collecting device of claim 1, characterized in that: the drill bit (1) is made of hard manganese steel, the structure and the function of the drill bit are the same as those of a well-known drill bit, the drill bit (1) can rotate under the drive of a rotor (26), the drill bit (1) is integrally conical, the conical bottom is the upper end, the diameter of a circle where the upper end is located is 6-12 cm, the height of the conical is 5-10 cm, the conical tip is the lower end, the rotor (26) is made of the hard manganese steel, the structure and the function of the drill bit are the same as those of the well-known rotor, the rotor (26) is integrally cylindrical, the diameter of the cylinder is 2-4 cm, the height of the cylinder is 40-50 cm, the upper end of the cylinder is fixed in the center of a motor (9), and; the structure and the function of the motor (9) are the same as those of a well-known motor, the motor (9) is integrally cylindrical, the diameter of the cylinder is 5-10 cm, the height of the cylinder is 5-10 cm, the motor support cylinders (10) are supports for supporting the motor (9) and fixing the motor (9) above a rotor fixed cylinder support (25), 2 in total, each motor support cylinder (10) is made of manganese steel or aluminum alloy and is cylindrical, the diameter of an inner cavity of the cylinder is 1-2 cm, the thickness of the wall of the cylinder is 2-5 mm, the length of the cylinder is 1-2 cm, the structure and the function of the storage battery (7) are the same as those of the well-known storage battery, the storage battery (7) is integrally cylindrical, the diameter of the cylinder is 5-10 cm, the height of the cylinder is 4-8 cm, and the structure and the function of the power switch (13) are the same as those; the power line (14) is a known double-strand copper core power line, the cross section of the copper core is circular, the diameter of the circular is 0.5-2 mm, one end of the circular is connected to the motor (9), the other end of the circular is connected to the storage battery (7), and a motor support cylinder (10) and a power line cylinder (15) are arranged in the middle of the circular and connected with a power switch (13) in a protection manner; the outer diameter of the power wire cylinder (15) is 1-2 cm, the wall thickness of the cylinder is 1-2 mm, the power wire cylinder (15) is made of manganese steel or aluminum alloy, and the part of the power wire cylinder (15) on the inner side of the label pressing handle cylinder (8) is welded with the label pressing handle cylinder (8); the rotor upper fixed cylinder (16) is cylindrical, the diameter of the inner cavity of the cylinder is 1-2 cm, the thickness of the wall of the cylinder is 1-2 cm, the length of the cylinder is 1-2 cm, the rotor upper fixed cylinder support (25) is made of manganese steel or aluminum alloy and is cylindrical, the diameter of the cylinder is 1-2 cm, the height of the cylinder is 3-5 cm, the rotor lower fixed cylinder support (22) is made of manganese steel or aluminum alloy and is cylindrical, the diameter of the cylinder is 1-2 cm, the height of the cylinder is 3-5 cm, the rotor lower fixed cylinder (23) is cylindrical, the diameter of the inner cavity of the cylinder is 1-2 cm, the thickness of the wall of the cylinder is 1-2 cm, the length of the cylinder is 1-2 cm, a bearing is arranged in the rotor lower fixed cylinder (23), and a rotor (26) is fixed on the inner ring of the bearing.

3. The soil nematode electric layering and quantitative collecting device of claim 1, characterized in that: the sample cylinder wall (20) is made of manganese steel or aluminum alloy and is 1-2 cm thick; the height of the sample cylinder cavity (21) is 15-50 cm, the cross section of the sample cylinder cavity (21) is circular, the diameter of the circular cross section is 5-10 cm, the sample cylinder layered partition (24) is a bulge protruding outwards from the outer surface of the sample cylinder (2), the cross section of the bulge is semicircular, the diameter of the semicircle is 1-2 mm, and the sample cylinder layered partition (24) is made of manganese steel or aluminum alloy; the sampling cover (18) is not provided with a sample cylinder wall (20); 2-3 sampling cover hinges (17) are arranged between one edge of the sampling cover (18) in the vertical direction and the sample cylinder wall (20); the sampling cover sealing structure (19) comprises two parts, namely a tightening belt and a retaining ring, wherein the tightening belt is made of leather, plastic or tinplate iron, the tightening belt is in a long belt shape, the width of the long belt is 2-3 cm, the thickness of the length is 0.5-1 mm, and the length of the long belt is 5-10 cm.

4. The soil nematode electric layering and quantitative collecting device of claim 1, characterized in that: the layered swab head (32) is cylindrical, 1 circular hole-shaped layered swab rotating shaft hole (33) is formed in the center of the cylinder, and the size of the circular hole of the layered swab rotating shaft hole (33) is matched with a transverse shaft perpendicular to the long shaft of the sample cylinder (2) in the middle of the movable joint (27); a layered pick body (31) is connected below the layered pick head (32), the cross section of the layered pick body (31) is rectangular, the length of the rectangle is 2-5 mm, the width of the rectangle is 0.5-1 mm, and the length of the layered pick body (31) is 2-5 cm; the layering pick blade (30) is a part with the thinned free end of the layering pick body (31), the width of a rectangle at the cross section of the thinnest layering pick blade (30) is 0.1-0.2 mm, the width of the whole layering pick blade (30) is 0.5-1 cm, the free end of the layering pick body (31) is in a blade shape, and an included angle of 10-20 degrees is formed between the layering pick blade (30) and the layering pick body (31).

5. The soil nematode electric layering and quantitative collecting device of claim 1, characterized in that: the lead-in sleeve (4) is made of manganese steel and is cylindrical, the thickness of the wall of the lead-in sleeve (4) is 0.5-1 mm, the length of the layering pick perforation (34) is 2.2-5.2 mm, the width of the rectangle is 0.52-1.2 mm, and when the layering pick blade (30) does not extend out, the layering pick blade (30) is plugged in the layering pick perforation (34).