CN107991228B - Measuring tool for breeding lodging-resistant corn varieties - Google Patents
Measuring tool for breeding lodging-resistant corn varieties Download PDFInfo
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- CN107991228B CN107991228B CN201711096440.1A CN201711096440A CN107991228B CN 107991228 B CN107991228 B CN 107991228B CN 201711096440 A CN201711096440 A CN 201711096440A CN 107991228 B CN107991228 B CN 107991228B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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Abstract
The invention provides a measuring tool for breeding lodging-resistant corn varieties, and belongs to the technical field of corn breeding tools. In the measuring tool, a first bottom plate is rotationally connected to a second bottom plate; semicircular grooves are formed in the first bottom plate and the second bottom plate; the first protractor is a sector plate with a central angle of 90 degrees, the vertex is arranged on the edge of the semicircular groove of the second bottom plate, the first side surface is provided with scale marks, and the second side surface is provided with an arc-shaped groove; one end of the limiting rod is rotatably connected to the top point of the first protractor, and a threading hole and a convex block are arranged on the rod body; the second protractor is formed by buckling two sector plates with central angles of 90 degrees, the first side surface is provided with scale lines, and the arc-shaped surface is provided with a threading opening; the pulley is arranged between the vertexes of the two sector plates of the second protractor; the sleeve is provided with a pull ring; one end of the pull rope is arranged on the pull ring, and the other end of the pull rope is connected with the dynamometer. The tool can simply, conveniently and quickly measure the lodging resistance of the corn, and lays a foundation for breeding lodging-resistant corn varieties.
Description
Technical Field
The invention relates to the technical field of corn breeding tools, in particular to a measuring tool for breeding lodging-resistant corn varieties.
Background
Corn lodging is a production disaster that causes corn plants to tilt or land during the corn growth process due to wind and rain or improper management. Along with the development of agricultural productivity and the rise of the yield level of corn, the contradiction between high yield of corn and lodging is more and more prominent, the corn lodging seriously affects the yield of the corn, and according to incomplete statistics, the corn lodging generally causes the yield reduction of 20-30 percent, and the serious yield reaches more than 50 percent. The corn lodging types are divided into three types, namely root lodging, stem lodging and stem folding. There are three factors that affect corn lodging: variety, artificial, weather. In the aspect of variety, the plant is over-high, the ear position is over-high, the stalk is weak, or secondary roots are few; in the artificial aspect, the density is too high, the fertilization is unreasonable, the management is not in place and the like; the weather aspect is mainly due to the poor exposure of the rain in the jointing stage and the sudden storm in the grouting stage. Among the three factors, weather factors are key factors of corn lodging, so that selection of an excellent lodging-resistant variety is a main way for fundamentally solving the problem of close planting and lodging resistance of corn.
Disclosure of Invention
The invention aims to provide a measuring tool for breeding lodging-resistant corn varieties, which lays a foundation for breeding lodging-resistant corn varieties by simply and quickly measuring the lodging resistance of corn.
The invention provides a measuring tool for breeding lodging-resistant corn varieties, which comprises a bottom plate, a first protractor, a limiting rod, a second protractor, a pulley, a sleeve, a pull rope and a dynamometer, wherein the bottom plate is provided with a first angle gauge and a second angle gauge; the bottom plate comprises a first bottom plate and a second bottom plate; one side of the first bottom plate is rotatably connected to the second bottom plate, so that the first bottom plate can rotate around the second bottom plate in the horizontal plane; the first bottom plate and the second bottom plate are both provided with semicircular grooves, and the two semicircular grooves form an accommodating groove for accommodating the base part of the corn stalk; the first protractor is a sector plate with a central angle of 90 degrees, a vertex is arranged on the edge of the semicircular groove of the second bottom plate, a first side edge extending from the vertex is arranged on the second bottom plate, a second side edge extending from the vertex is perpendicular to the second bottom plate, a scale mark is arranged on the first side surface, and an arc-shaped groove is arranged on the second side surface; the limiting rod is positioned on the second side surface of the first protractor, one end of the limiting rod is rotatably connected to the top point of the first protractor, and the rod body is provided with a threading hole and a convex block matched with the arc-shaped groove; the second protractor is formed by buckling two sector plates with central angles of 90 degrees, the first side surface is provided with scale marks, the arc-shaped surface and the arc-shaped surface of the first protractor face the same direction, and the second protractor is provided with threading openings which are in one-to-one correspondence with the scale marks; the pulley is arranged between the vertexes of the two sector plates of the second protractor; the sleeve is sleeved on the corn stalk, and the outer wall of the sleeve is provided with a pull ring; one end of the pull rope is arranged on the pull ring, and the other end of the pull rope sequentially penetrates through the threading hole, the pulley and the second protractor to penetrate out of the threading hole to be connected with the dynamometer.
Furthermore, a flexible covering layer is arranged on the inner wall of the semicircular groove; locking pieces are arranged on the first bottom plate and the second bottom plate.
Further, the arc-shaped groove and the projection are engaged by the serration.
Further, the sleeve is enclosed by banding sleeve area and closes and form, and the both ends of sleeve area are provided with connecting portion.
Further, the sleeve comprises a flexible inner layer and a waterproof outer layer, and is arranged on the corn stalk at the position which is equal to the second side edge of the first protractor in height.
Furthermore, a telescopic rod with a hollow structure is arranged on the threading opening; the telescopic rod is positioned on the vertex of the second angle measuring angle and the straight line where the threading opening is positioned.
Further, the force gauge is a digital force gauge.
Compared with the prior art, the invention has the advantages that:
with first bottom plate and second bottom plate separation, the semicircular groove card of second bottom plate is on the maize stalk base, rotatory first bottom plate is fixed maize stalk base card in the holding tank, it aligns to rotate suitable scale mark on the gag lever post makes it and the first protractor, with the muffjoint on the maize stalk, wear the stay cord and make the stay cord wear out from a certain threading mouth, along second protractor summit and this threading mouth place sharp direction tractive dynamometer, until the laminating of maize stalk on the gag lever post, the dynamometer reading is after stable, the record reading. The corn of adopting above-mentioned device and mode to measure a certain amount, when testing at every turn, the position of guaranteeing sleeve and gag lever post and the tractive direction of stay cord remain unchanged, and the contrast reading, the great maize of reading is promptly for the good maize variety of lodging resistance nature, marks it. Therefore, the measuring tool provided by the invention can simply, conveniently and quickly measure the lodging resistance of the corn, and lays a foundation for breeding lodging-resistant corn varieties.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a measurement tool for breeding lodging-resistant corn varieties provided in this embodiment;
FIG. 2 is a schematic view of the base plate of the measuring tool of FIG. 1;
FIG. 3 is a schematic view of a second side of the first protractor of the measuring tool of FIG. 1;
FIG. 4 is a schematic view of a second protractor in the measurement tool of FIG. 1;
FIG. 5 is a schematic view of the construction of the sleeve of the measuring tool of FIG. 1;
fig. 6 is a developed view of the sleeve shown in fig. 5.
Reference numbers: 1-a first protractor; 2-a limiting rod; 3-a second protractor; 4-a pulley; 5-a sleeve; 6-pulling a rope; 7-a force gauge; 8-a first base plate; 9-a second bottom plate; 10-an arc-shaped groove; 11-a threading opening; 12-a pull ring; 13-a locking member; 14-a fastening tape; 15-telescopic rod.
Detailed Description
The embodiment provides a measuring tool for breeding lodging-resistant corn varieties, as shown in fig. 1 to 5, comprising a bottom plate, a first protractor 1, a limiting rod 2, a second protractor 3, a pulley 4, a sleeve 5, a pull rope 6 and a dynamometer 7; the bottom plate comprises a first bottom plate 8 and a second bottom plate 9; one side of the first bottom plate 8 is rotatably connected to the second bottom plate 9, so that the first bottom plate 8 can rotate around the second bottom plate 9 in the horizontal plane; semicircular grooves are formed in the first bottom plate 8 and the second bottom plate 9, and the two semicircular grooves form an accommodating groove for accommodating the basal part of the corn stalk; the first protractor 1 is a sector plate with a central angle of 90 degrees, a vertex is arranged on the edge of a semicircular groove of the second bottom plate 9, a first side edge extending from the vertex is arranged on the second bottom plate 9, a second side edge extending from the vertex is perpendicular to the second bottom plate 9, a scale mark is arranged on the first side surface, and an arc-shaped groove 10 is arranged on the second side surface; the limiting rod 2 is positioned on the second side surface of the first protractor 1, one end of the limiting rod is rotatably connected to the top point of the first protractor 1, and a threading hole and a convex block matched with the arc-shaped groove 10 are arranged on the rod body; the second protractor 3 is formed by buckling two sector plates with central angles of 90 degrees, the first side surface is provided with scale marks, the arc-shaped surface and the arc-shaped surface of the first protractor 1 face the same direction, and the second protractor is provided with threading openings 11 which are in one-to-one correspondence with the scale marks; the pulley 4 is arranged between the vertexes of the two sector plates of the second protractor 3; the sleeve 5 is used for being sleeved on the corn stalk, and the outer wall of the sleeve is provided with a pull ring 12; one end of the pull rope 6 is arranged on the pull ring 12, and the other end of the pull rope sequentially penetrates through the threading hole, the pulley 4 and the second protractor 3 to penetrate out of the threading hole 11 to be connected with the dynamometer 7.
When using the measuring tool that this embodiment provided, separate first bottom plate 8 and second bottom plate 9, the semicircular groove card of second bottom plate 9 is on the maize stalk base, rotatory first bottom plate 8 is fixed maize stalk base card in the holding tank, it aligns with suitable scale mark on the first protractor 1 to rotate gag lever post 2 and make it, overlap sleeve 5 on the maize stalk, it makes stay cord 6 wear out from a certain threading mouth 11 to wear stay cord 6, along 3 summits of second protractor and this threading mouth 11 place straight line direction tractive dynamometer 7, until the laminating of maize stalk on gag lever post 2, behind 7 readings of dynamometer are stable, the record reading. Adopt above-mentioned device and mode to measure the maize of a certain quantity, when testing at every turn, guarantee sleeve 5 and gag lever post 2's position and the tractive direction of stay cord 6 and keep unchangeable, contrast reading, the great maize of reading is the maize variety that lodging resistance is good promptly, marks it. Therefore, the measuring tool provided by the embodiment can simply, conveniently and quickly measure the lodging resistance of the corn, and lays a foundation for breeding lodging-resistant corn varieties.
Furthermore, a flexible covering layer is arranged on the inner wall of the semicircular groove to reduce the damage to the corn stalk base when the corn stalk base is clamped; as shown in fig. 2, the first bottom plate 8 and the second bottom plate 9 are provided with locking members 13. The flexible cover layer may be a rubber layer, a sponge layer, or the like. The locking member 13 may be provided at two pin bushes of the first and second bottom plates 8 and 9 and a pin connecting the two pin bushes, the openings of the two pin bushes being overlapped to enable the pin to be inserted into the two pin bushes when the first and second bottom plates 8 and 9 are in the closed state; or, the locking member can also be a clamping block and a rotatable clamping ring, and when the first bottom plate 8 and the second bottom plate 9 are in a closed state, the clamping block is sleeved in the clamping ring by rotating the clamping ring.
The limiting rod 2 can be rotatably connected to the vertex of the first protractor 1 through a connecting shaft, preferably, a circular groove is formed in the vertex of the first protractor 1, an internal thread is formed in the circular groove, and one end, connected to the vertex of the first protractor 1, of the limiting rod 2 bends towards the first protractor 1 and is provided with an external thread matched with the internal thread. The limiting rod 2 is not easy to rotate after being fixed at a certain position through the matching of the internal thread and the external thread, and can keep a fixed state.
Further, arc wall 10 and lug pass through the sawtooth meshing to make gag lever post 2 can be more firm be fixed in a certain position on, even when the laminating of maize stalk is on gag lever post 2, also enable gag lever post 2 can not produce the displacement, guarantee the accuracy of test.
Further, as shown in fig. 6, the sleeve 5 is formed by enclosing a strip-shaped sleeve belt, and connecting portions are provided at both ends of the sleeve belt so as to wrap the sleeve 5 on the corn stalks. The connecting part can be two through holes arranged at two ends of the sleeve belt and a connecting rope for connecting the two through holes, and the connecting rope is tied on one through hole to prevent loss; or snap or hook and loop fasteners 14 disposed at opposite ends of the sleeve strip. Preferably, a more easily manipulated fastening strip 14 is used.
Further, the sleeve 5 comprises a flexible inner layer, preferably a sponge layer or a cotton layer, to protect the corn stalk, and a waterproof outer layer; the waterproof outer layer can be leather, rubber and the like. During each test, the sleeve 5 is arranged on the corn stalk at the position which is equal to the second side edge of the first protractor 1 in height.
Further, as shown in fig. 1, a telescopic rod 15 with a hollow structure is arranged on the threading opening 11; the telescopic link 15 is located the summit of second angulometry 3 and the straight line that threading mouth 11 belonged to guarantee that the tractive direction of stay cord 6 is located the summit of second angulometry 3 and the straight line that threading mouth 11 belonged to all the time, guarantee the accuracy of test. Specifically, a telescopic rod 15 may be disposed on each threading opening 11; also can be with a telescopic link 15 detachable install on one in a plurality of threading mouths 11, for example set up every threading mouth 11 to circular to set up the internal thread, the one end that telescopic link 15 and threading mouth 11 are connected is provided with the external screw thread.
Further, the load cell 7 is a digital load cell to facilitate reading.
Further, the minimum scale value of the first and second protractors 1, 3 is 5 degrees.
Further, the included angle between the limiting rod 2 and the second side of the first protractor 1 is 45 degrees, the included angle is too small, the bending angle of the corn stalk is small, the lodging-resistant corn variety and the common variety are difficult to distinguish, the included angle is too large, the bending angle of the corn stalk is large, great damage is easily caused to the corn after the test is completed, and the corn needs long time to recover.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.
Claims (6)
1. The utility model provides a measuring tool of seed selection lodging-resistant maize variety which characterized in that: the device comprises a bottom plate, a first protractor (1), a limiting rod (2), a second protractor (3), a pulley (4), a sleeve (5), a pull rope (6) and a dynamometer (7);
the bottom plate comprises a first bottom plate (8) and a second bottom plate (9);
one side of the first bottom plate (8) is rotatably connected to the second bottom plate (9) so that the first bottom plate (8) can rotate around the second bottom plate (9) in the horizontal plane;
semicircular grooves are formed in the first bottom plate (8) and the second bottom plate (9), and the two semicircular grooves form an accommodating groove for accommodating the base part of the corn stalk;
the first protractor (1) is a sector plate with a central angle of 90 degrees, a vertex is arranged on the edge of a semicircular groove of the second bottom plate (9), a first side edge extending from the vertex is arranged on the second bottom plate (9), a second side edge extending from the vertex is perpendicular to the second bottom plate (9), a scale mark is arranged on the first side surface, and an arc-shaped groove (10) is arranged on the second side surface;
the limiting rod (2) is positioned on the second side face of the first protractor (1), one end of the limiting rod is rotatably connected to the top point of the first protractor (1), and a threading hole and a convex block matched with the arc-shaped groove (10) are formed in the rod body;
the second protractor (3) is formed by buckling two sector plates with central angles of 90 degrees, the first side surface is provided with scale marks, the arc-shaped surface and the arc-shaped surface of the first protractor (1) face to the same direction, and the second protractor is provided with threading openings (11) which are in one-to-one correspondence with the scale marks;
the pulley (4) is arranged between the vertexes of the two sector plates of the second protractor (3);
the sleeve (5) is sleeved on the corn stalk, and the outer wall of the sleeve is provided with a pull ring (12);
one end of the pull rope (6) is arranged on the pull ring (12), and the other end of the pull rope sequentially penetrates through the threading hole, the pulley (4) and the second protractor (3) and penetrates out of the threading opening (11) to be connected with the dynamometer (7);
a telescopic rod (15) with a hollow structure is arranged on the threading opening (11);
the telescopic rod (15) is positioned on the vertex of the second angle measuring angle (3) and the straight line where the threading opening (11) is positioned.
2. The measurement tool for breeding lodging-resistant corn varieties as claimed in claim 1, wherein a flexible covering layer is arranged on the inner wall of the semicircular groove;
locking pieces (13) are arranged on the first bottom plate (8) and the second bottom plate (9).
3. The measurement tool for breeding lodging-resistant corn varieties as claimed in claim 1, wherein the arcuate groove (10) and the projection are engaged by serrations.
4. The measurement tool for breeding lodging-resistant corn varieties as claimed in claim 1, wherein the sleeve (5) is enclosed by a strip-shaped sleeve belt, and connecting portions are arranged at two ends of the sleeve belt.
5. The measurement tool for breeding lodging-resistant corn varieties as claimed in claim 1 or 4, wherein the sleeve (5) comprises a flexible inner layer and a waterproof outer layer and is arranged on the corn stalk at a position which is as high as the second side edge of the first protractor (1).
6. The measurement tool for breeding lodging-resistant maize varieties as claimed in claim 1, characterized in that the dynamometer (7) is a digital dynamometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711096440.1A CN107991228B (en) | 2017-11-09 | 2017-11-09 | Measuring tool for breeding lodging-resistant corn varieties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711096440.1A CN107991228B (en) | 2017-11-09 | 2017-11-09 | Measuring tool for breeding lodging-resistant corn varieties |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107991228A CN107991228A (en) | 2018-05-04 |
| CN107991228B true CN107991228B (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711096440.1A Expired - Fee Related CN107991228B (en) | 2017-11-09 | 2017-11-09 | Measuring tool for breeding lodging-resistant corn varieties |
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| US20110083519A1 (en) * | 2009-10-12 | 2011-04-14 | Pioneer Hi-Bred International | Correlating Push Force and Stalk Vibration to a Plant's Susceptibility to Stalk Lodging and Brittle Snap |
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| CN202281723U (en) * | 2011-06-23 | 2012-06-20 | 河南科技学院 | Portable crop lodging-resistant strength electronic determinator |
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Granted publication date: 20201016 Termination date: 20211109 |