CN114847072B

CN114847072B - Method for planting Tai 8 jackfruit in beach sand

Info

Publication number: CN114847072B
Application number: CN202210544328.4A
Authority: CN
Inventors: 李春; 梁志
Original assignee: Hainan Yijing Agricultural Development Co ltd
Current assignee: Hainan Yijing Agricultural Development Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2023-05-26
Anticipated expiration: 2042-05-19
Also published as: CN114847072A

Abstract

The invention discloses a method for planting Tai 8 jackfruit in coastal sandy land, which comprises the following steps: (1) selecting beach sand as a planting area; (2) digging a planting pit to embed fertilizer as a planting position; (3) providing an irrigation system; (4) selecting seedlings for field planting, and forming round soil piers; (5) Water and fertilizer management, namely Bao Shi times of fertilizer application, and periodically spraying foliar fertilizer to supplement calcium and magnesium elements; (6) weed and pest control; and (7) crown management, namely culturing umbrella-shaped crowns. The planting method can successfully plant the Tai 8 jackfruit under the severe environment of the coastal sand, obtain high yield and increase the coastal landscape.

Description

Method for planting Tai 8 jackfruit in beach sand

Technical Field

The invention relates to a method for planting Tai 8 jackfruit in coastal sandy land.

Background

The Tai 8 jackfruit is a variety introduced from Thailand, has delicious pulp, is suitable for growing in the region with annual rainfall of 1800-2500 mm, and the ideal soil for growth is red soil with loose soil quality, deep and rich soil layer and good drainage, starts to grow at 13 ℃, stops growing at a temperature higher than 37 ℃, has a proper soil temperature (5-10 cm soil layer) of 20-22 ℃, has a proper soil water content of 60-70% of the maximum water holding capacity, and has a proper soil pH value of 5.5-6.5. The coastline of Hainan province is greatly affected by sea wind, the soil has high sand content and is barren, the unmodified coast sand is not suitable for planting the Thai 8 jackfruit trees, and in addition, the vegetation quantity is obviously smaller than that of the land far from the coastline due to the poor living environment of the vegetation on the coast sand, so that the coastal landscape is poor. However, for fruit quality, the taste of sandy loam is usually obviously better than that of non-sandy loam, so that the problem that the healthy growth of the Tai 8 jackfruit tree in the coastal sandy land is needed to be solved is solved.

Disclosure of Invention

In order to solve the problem that the Thai 8 jackfruit tree is not suitable for healthy growth in the coastal sand and poor in coastal landscape, the application provides a method for planting Thai 8 jackfruit in the coastal sand.

The method for planting the Tai 8 jackfruit in the beach sand comprises the following steps:

(1) Selecting land: the beach sand with the altitude lower than 500 meters and the sand content of 50-80% is selected as a planting area, and the soil water level of the sand is below 2 meters. The closest distance of the planting area to the coastline may be 1 km.

(2) Digging a planting pit: digging planting pits with the length of 80-100 cm, the width of 80-100 cm and the depth of 80-100 cm in advance, digging the bottom soil for standby, distributing the planting pits according to the row spacing of 4.0-5.5 m multiplied by 5.0-6.0 m, regulating the pH value of soil in the planting pits to be 5.5-6.5, uniformly mixing and filling bio-organic fertilizer except animal manure and surface soil into the planting pits to serve as a fertilizer soil layer, wherein the upper surface of the fertilizer soil layer is 25-30 cm away from the original soil surface of the planting pits, and filling the bottom soil on the fertilizer soil layer until the planting pits are filled, wherein the bio-organic fertilizer filled in each planting pit is 20-30 kg, and the sinking of a soil disc is relatively stable after 10-15 days to serve as a field planting position. Soil with a pH exceeding 5.5-6.5, while jackfruit can also grow, it is difficult to obtain high yields. The reason why the bio-organic fertilizer does not contain animal feces is to prevent soil from being polluted by heavy metals in the feces.

(3) Setting an irrigation system: firstly, digging drainage ditches in a planting area, then, laying fertilizer and water pipelines, and irrigating water every day after the irrigation system is laid.

(4) Selecting seedlings and planting: selecting strong seedlings, filling a fertilizer, throwing a medicine, taking a nutrition cup for seedling lifting, digging a field planting hole at a field planting position during field planting, burying the nutrition cup in the field planting hole, covering soil 3-5 cm higher than the top of the nutrition cup, and finishing soil piers, so that the top surface of the soil piers is 10-20 cm higher than the original soil surface, and the diameter of the soil piers is 1.2-1.5 m.

(5) And (3) water and fertilizer management: watering after field planting to enable the soil humidity at the position 30-40 cm below the soil surface to be 60-70%; the fertilizer is applied for Bao Shi times, and the foliar fertilizer is sprayed periodically to supplement calcium and magnesium elements.

(6) Weed and pest control: weeding by glufosinate and manually weeding are adopted for weed control, and spraying to green parts of crowns and tree stems is forbidden; the longicorn is controlled by adopting the steps of lime water coating on the trunk, adult killing, insect egg scraping, iron wire stabbing, damaged branch removing, deltamethrin emulsifiable concentrate fumigation and larvicide, and spraying pesticide and adult killing in the peak period of emergence; the prevention and control of the large gray weevil adopts manual catching and pesticide disinfestation; the anthracnose is prevented and treated by alternately spraying benzyl pyrazole ester, chlorothalonil and mancozeb on branches and leaves with diseases; the root rot is controlled by spraying the metalaxyl-hymexazol and ethylicin; the soft rot is prevented and treated by pruning a disease branch, removing a fungus garden, bagging fruits, spraying a suspension of the bupirimate, a solution of the benzyl pyrazole ester or a solution of copper hydroxide wettable powder in the early stage of flowering and the young fruit stage before bagging; spraying suspending agent liquid of bupirimate, or benzyl pyrazole ester liquid or wettable powder liquid of copper hydroxide in the fruit ripening period; the prevention and treatment of the red rot adopts the steps of cutting off the disease part, coating asphalt diesel oil mixture and spraying Boerdos liquid.

The trunk is coated with lime water, besides preventing and treating longhorn beetles, the trunk also has an antifreezing effect, the lime water is white after being dried, the lime water is not easy to absorb heat in daytime, the day and night temperature difference can be reduced, and frostbite caused by large day and night temperature difference is prevented.

(7) Crown management: culturing umbrella-shaped crown, and controlling the height of adult crown to 3-3.5 m; trimming and shaping technical operation: lightly trimming from bottom to top when young, wherein the volume of each trimming branch is less than 25% of the total volume of the crown; when the growth height of the main rod reaches 1.4-1.5 m during topping and pruning, picking cores at a distance of 1.2-1.3 m from the ground according to the distribution condition of branches, selecting 3-5 strong branches which are uniformly distributed and grow at 45-60 degrees with the trunk according to four directions of east, west, south and north, culturing first-stage branches, and removing other redundant branches according to the condition, wherein the selected branches are 0.8-1.2 m from the ground; when the primary branches grow to 1.4-1.5 m, the core is removed from the position 1.2-1.3 m away from the main rod, and the tops are removed, 3-4 branches which are uniformly distributed, strong and obliquely upwards grow are left for culturing the secondary branches, and other branches are completely scraped off; in this way, after 2-3 times of pinching and topping, an umbrella-shaped crown is formed.

In the step (1), the planting area is 3-3.5 km away from the coastline.

In the step (2), when the pH of the soil in the planting hole is below 5.5, 1 kg of quicklime or limestone is applied to each cubic meter of planting hole; when the pH of the soil is above 7, 1 kg of sulfur is applied to each cubic meter of plant pit soil.

In the step (4), the fertilizer filling and transplanting comprises root fertilizer filling and foliar spraying, wherein the root fertilizer filling is performed 2-3 days before seedling transplanting, the foliar spraying is performed 1-2 days before seedling transplanting, and the medicine transplanting and transplanting are performed 1-2 days before seedling transplanting; the top surface of the soil pier is a plane.

In the step (5), fertilizer is applied by applying fertilizer once every 8-10 days or applying fertilizer 1-2 times per batch of buds, and each fertilizer applying water is 9-10 kg per plant of newly planted seedlings; the foliar fertilizer is sprayed by spraying the calcium magnesium lactate liquid once every 45-60 days.

In the step (7), pruning is carried out on sunny days when young ages are obtained; the trimming procedure is: firstly, pruning competition branches, and secondly, pruning dense branches, cross branches, dead branches and pest branches, and directly pruning the branches from the base of the branches; then, strong branches with diameters larger than 1/3 of the trunk are trimmed, branches growing downwards at the top end parts of the strong branches are trimmed firstly when the proportion of the strong branches to the tree crowns is too large, a part of small branches and leaves are reserved for assisting photosynthesis, and only one strong branch can be trimmed at a time when the number of the strong branches is several.

Setting an air-proof belt around the planting area; the wind-proof belt is a wind-proof forest.

The beneficial effects are that: the invention improves the coastal sand land, so that the method is suitable for planting Tai 8 jackfruit, realizes high yield, improves fruit taste due to sand land planting, and adds coastal landscapes as a landscape forest.

Drawings

FIG. 1 is an ecological environment diagram of a Tai 8 jackfruit planting area in the invention;

FIG. 2 is a graph showing the growth of Tai 8 jackfruits after 7 months of planting;

FIG. 3 is a graph showing the growth of Tai 8 jackfruit after 17 months of planting;

FIG. 4 is a fruit producing chart of Tai 8 jackfruit;

fig. 5 is a diagram of tay 8 jackfruit as a coastal landscape forest.

Detailed Description

The technical scheme of the present invention is described in detail by examples below, but the scope of the present invention is not limited to the examples.

Examples

The invention relates to a method for planting Tai 8 jackfruit in a beach sand land, wherein the actual planting land is positioned in a sea tail town of an autonomous county of Changjiang Li nationality in Hainan province, and the planting method comprises the following steps.

(1) Selecting land

The method comprises the steps of selecting a coastal sandy land with an altitude lower than 500 m and a sand content of 50% -80% as a planting area, wherein the closest distance between the planting area and a coastline is about 3 km, the sand content of sandy land soil is 70% -80%, the water level of sandy land soil is lower than 2m, and arranging a wind-proof belt around the planting area, wherein the wind-proof belt is a wind-proof forest. The ecological environment of the present planting area for planting Tai 8 jackfruit is shown in figure 1.

(2) Digging planting pit

Digging planting pits with the length of 80 cm, the width of 80 cm and the depth of 80 cm in advance, digging bottom soil for later use, distributing the planting pits according to the row spacing of 4.0-5.5 m multiplied by 5.0-6.0 m, uniformly mixing and filling biological organic fertilizer except animal manure and surface soil into the planting pits to serve as a fertilizer soil layer, wherein the upper surface of the fertilizer soil layer is 25-30 cm away from the original soil surface of the planting pits, filling the bottom soil on the fertilizer soil layer until the planting pits are filled, wherein the biological organic fertilizer filled into each planting pit is 20-30 kg, and the soil disc is relatively stable in sinking after 10-15 days to serve as a fixed planting position.

The pH of soil in the planting pit can be adjusted, and when the pH of the soil is below 5.5, 1 kg of quicklime or limestone is applied to each cubic meter of planting pit; when the pH of the soil is above 7, 1 kg of sulfur is applied to each cubic meter of plant pit soil. The pH of the soil in this example was 6, so that no adjustment treatment was required.

(3) Setting irrigation system

Firstly, digging drainage ditches in a planting area, then, laying fertilizer and water pipelines, and irrigating water every day after the irrigation system is laid.

(4) Seedling selection field planting

Selecting strong seedlings, filling a fertilizer, throwing a medicine, lifting seedlings with a nutrition cup, digging a field planting hole of about 15 cm at a field planting position, taking off a black film on the seedling of the nutrition cup, loosening nutrition soil at 1/3 of the lower part of the nutrition cup by hands to enable root systems to be outwards unfolded, preventing packing, increasing the air permeability and water permeability of the nutrition cup, aligning bud grafting strips with the main wind direction (southeast direction in the embodiment), straightening, embedding the nutrition cup into the field planting hole, covering soil 3-5 cm higher than the top of the nutrition cup (covering soil must be below 5 cm at a bud interface), and forming a round soil pier with the diameter of 1.2-1.5 m, wherein the top surface of the soil pier is a plane, so that the top surface of the soil pier is 10-20 cm higher than the original soil surface.

When the soil mound is finished, the top surface of the soil mound is not integrated into an inclined plane or a deep pit along the slope direction, so that the soil mound can not flow out and uniformly permeate downwards when the water and fertilizer are irrigated, the water and fertilizer at the base of the sapling are uniform and sufficient and can not be deposited, and meanwhile, the water and fertilizer can be dispersed around the rhizosphere, thereby being beneficial to the growth of the root system and extending to the periphery. If the top surface of the soil pier is integrated into an inclined surface, the growth of the root system is unbalanced, even the root system is distributed on one side (the root system of the inclined low surface is developed, and the root system of the inclined high surface is few), and the wind resistance is poor.

The fertilizer is applied to the root of the seedling for 2-3 days before transplanting, and is mainly applied to the root for supplementing nutrition, promoting root growth, preventing root rot and neck rot, and the foliage spray is applied for 1-2 days before transplanting, and is mainly applied to the seedling for preventing and treating diseases and insect pests, supplementing nutrition and medium trace elements, and applying the grafting agent for 1-2 days before transplanting. Root fertilizer application can be selected from any one of the schemes shown in table 1, and foliar spray can be selected from any one of the schemes shown in table 2.

TABLE 1

TABLE 2

Note that: when in foliar spray, 1.8% compound sodium nitrophenolate is used 3000 times at 15-30 ℃ and 4000 times at more than 30 ℃;0.01% brassinolide was used 1500-fold at 20-30deg.C.

(5) Water and fertilizer management

Watering after field planting to make the soil humidity at the position 30-40 cm below the soil surface be 60-70%, and starting fertilizer filling after new seedlings start to grow new buds. The planting area is mainly sandy land, N, P, K, organic matters and the like are deficient, the water and fertilizer retaining capacity is poor, the fertilizer filling principle is mainly to thin Shi Duo times, for example, fertilizer is filled once every 10 days or 1-2 times per batch of buds, fertilizer water is filled into each plant of new field planting seedlings for 10 kg, and the fertilizer water consumption is gradually increased along with the growth of the seedlings in the later period. Because the sand lacks calcium and magnesium and the root fertilizer has low utilization rate, the requirement of crown growth cannot be met, and the Tai 8 jackfruit is happy with calcium and magnesium, the foliar fertilizer is sprayed periodically to supplement calcium and magnesium elements, for example, calcium and magnesium lactate liquid is sprayed once every 45-60 days, the foliar spray fertilizer has high utilization rate, the nutrients required by the growth of the sapling can be supplemented, the nutrient deficiency of the sapling can be prevented, the growth of new buds and leaves of the sapling can be promoted, and the growth vigor of the sapling can be improved. In addition, trace elements are supplemented according to circumstances. The first fertilization of the roots after field planting can be selected from any one of the schemes shown in table 3, the common fertilization of the roots of young trees in the vegetative growth period can be selected from any one of the schemes shown in table 4, and the calcium and magnesium supplementing fertilization of the roots of young trees can be selected from any one of the schemes shown in table 5.

TABLE 3 Table 3

TABLE 4 Table 4

TABLE 5

Spraying the foliar fertilizer also needs to be performed simultaneously in combination with disease prevention and deinsectization, so that nutrition is supplemented, and new buds and new leaves are prevented from being damaged by diseases and insects, and the scheme shown in the table 6 is specifically selected.

TABLE 6

Note that: after continuous rainy days or heavy rainy days, the bactericide can be singly used for spraying 10 g of 46% copper hydroxide water dispersible granule with 30 jin of water for 1-2 times, and has better prevention and treatment effects on fungi and bacterial diseases.

(6) Weed, pest control

The weeding and artificial weeding of glufosinate are adopted for weed control, and spraying to green parts of crowns and tree stems is forbidden. The longicorn is controlled by spreading lime water on trunk, catching and killing adults, scraping eggs, stabbing iron wires, removing damaged branches, and spraying pesticide to kill adults in the peak period of emergence, wherein the pesticide is 400 times of deltamethrin emulsifiable concentrate. The prevention and control of the elephant adopts manual catching and pesticide disinfestation. The anthracnose is controlled by alternately spraying 50% of benzyl pyrazole ester, 60% of chlorothalonil and 70% of mancozeb to remove branches and leaves with diseases. The root rot is controlled by spraying the metalaxyl-hymexazol and ethylicin. The soft rot is controlled by pruning a disease branch, removing a fungus garden, bagging fruits, spraying 1000-1500 times of 32.5% azoxystrobin suspending agent or 1000-1500 times of 32% benzyl pyrazole ester or 500-800 times of 77% copper hydroxide wettable powder before bagging in the early stage of flowering and the young fruit stage. The fruit rot is prevented and treated by spraying 1000-1500 times of 32.5% suspending agent of azoxystrobin, 1000-1500 times of 32% benzyl pyrazole ester or 500-800 times of 77% wettable copper hydroxide powder in the fruit ripening period. The prevention and treatment of the red rot adopts the steps of cutting off the disease part, coating asphalt diesel oil mixture and spraying 1% of Boerdos liquid. The prevention and treatment of fruit cracking disease adopts calcium fertilizer application and water fertilizer management enhancement.

Because the planting area is sandy land and has a plurality of sloping fields, the safety of the sapling is ensured while the sapling is weeding, and the water and soil loss is prevented, therefore, the herbicide can only use the glufosinate-ammonium but not the glyphosate, and the glufosinate-ammonium can kill weeds, has less residue, does not damage the root system structure of the weeds in the soil, and can prevent the water and soil loss. The weeding comprises pre-field weeding and post-field weeding, wherein the pre-field weeding is spraying with 200 ml/30 jin of 20% glufosinate-ammonium water and organic silicon in advance, and deep turning and raking can obviously reduce the basal number of weeds and delay the germination of the weeds after 5-7 days. After field planting, when weeds grow about 10 cm high, 200 ml of 20% glufosinate ammonium is added to each 30 jin of water and organic silicon is added for interline spraying in windless days of sunny weather, so that the weeds are prevented from being sprayed to leaves and green parts of the seedlings (preferably, seedlings are covered by plastic bags). The base of the seedling is weeding as manually as possible, weeding, loosening soil and promoting root; the large seedling base avoids weeding by using tools such as a hoe and the like so as to avoid hoeing the root system of the soil surface below the crown.

Pruning the young in a sunny day; the trimming procedure is: firstly, pruning competition branches, and secondly, pruning dense branches, cross branches, dead branches and pest branches, and directly pruning the branches from the base of the branches; then, strong branches with diameters larger than 1/3 of the trunk are trimmed, branches growing downwards at the top end parts of the strong branches are trimmed firstly when the proportion of the strong branches to the tree crowns is too large, a part of small branches and leaves are reserved for assisting photosynthesis, and only one strong branch can be trimmed at a time when the number of the strong branches is several.

The growth condition of the Tai 8 jackfruits after being planted for 7 months is shown in fig. 2, and the planting land is a sand area. The growth condition of the Tai 8 jackfruit after 17 months of planting is shown in fig. 3, which shows that the Tai 8 jackfruit seedlings grow healthily. The fruit of Tai 8 jackfruit is shown in figure 4, which shows healthy, full and high yield. The tablet of Tai 8 jackfruit forms a seashore landscape forest as shown in fig. 5.

The abovementioned techniques not mentioned in particular refer to the prior art.

As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The method for planting the Tai 8 jackfruit in the beach sand is characterized by comprising the following steps of:

(1) Selecting land: selecting a coastal sandy land with an altitude lower than 500 meters and a sand content of 50% -80% as a planting area, wherein the soil water level of the sandy land is lower than 2 meters;

(2) Digging a planting pit: digging planting pits with the length of 80-100 cm, the width of 80-100 cm and the depth of 80-100 cm in advance, and filling the excavated subsoil into the planting pits for later use, wherein the planting pits are distributed according to the row spacing of 4.0-5.5 m multiplied by 5.0-6.0 m, the pH value of soil in the planting pits is adjusted to be 5.5-6.5, the bio-organic fertilizer and the surface soil except animal manure are uniformly mixed and filled into the planting pits to serve as a fertilizer soil layer, the upper surface of the fertilizer soil layer is 25-30 cm away from the original soil surface of the planting pits, and the subsoil is filled on the fertilizer soil layer until the planting pits are filled, wherein the bio-organic fertilizer filled into each planting pit is 20-30 kg, and the soil disc is relatively stable in sinking after 10-15 days to serve as a field planting position;

(3) Setting an irrigation system: firstly, digging drainage ditches in a planting area, then, laying fertilizer and water pipelines, and irrigating thoroughly every day after the irrigation system is laid;

(4) Selecting seedlings and planting: selecting strong seedlings, filling a fertilizer, and applying a drug before seedling raising, raising seedlings with a nutrition cup, digging a field planting hole at a field planting position, embedding the nutrition cup into the field planting hole, covering soil 3-5 cm higher than the top of the nutrition cup, and finishing soil piers, wherein the top surface of the soil piers is 10-20 cm higher than the original soil surface, and the diameter of the soil piers is 1.2-1.5 m;

(5) And (3) water and fertilizer management: watering after field planting to enable the soil humidity at the position 30-40 cm below the soil surface to be 60-70%; the fertilizer is applied for Bao Shi times, and the foliar fertilizer is sprayed periodically to supplement calcium and magnesium elements;

(6) Weed and pest control: weeding by glufosinate and manually weeding are adopted for weed control, and spraying to green parts of crowns and tree stems is forbidden; the longicorn is controlled by adopting the steps of lime water coating on the trunk, adult killing, insect egg scraping, iron wire stabbing, damaged branch removing, deltamethrin emulsifiable concentrate fumigation and larvicide, and spraying pesticide and adult killing in the peak period of emergence; the prevention and control of the large gray weevil adopts manual catching and pesticide disinfestation; the anthracnose is prevented and treated by alternately spraying benzyl pyrazole ester, chlorothalonil and mancozeb on branches and leaves with diseases; the root rot is controlled by spraying the metalaxyl-hymexazol and ethylicin; the soft rot is prevented and treated by pruning a disease branch, removing a fungus garden, bagging fruits, spraying a suspension of the bupirimate, a solution of the benzyl pyrazole ester or a solution of copper hydroxide wettable powder in the early stage of flowering and the young fruit stage before bagging; spraying suspending agent liquid of bupirimate, or benzyl pyrazole ester liquid or wettable powder liquid of copper hydroxide in the fruit ripening period; the prevention and treatment of the Pythium gracile adopts the steps of cutting off disease parts, coating asphalt diesel oil mixture and spraying Boerdos liquid;

2. The method of planting jack-grass in coastal sand of claim 1, wherein in step (1), the planting area is 3-3.5 km from the coastline.

3. The method for planting tay 8 jackfruit in coastal sand according to claim 1, wherein in the step (2), the pH of the soil in the planting pit is adjusted by applying 1 kg of quicklime or limestone in each cubic meter of planting pit when the pH of the soil is below 5.5; when the pH of the soil is above 7, 1 kg of sulfur is applied to each cubic meter of plant pit soil.

4. The method for planting the Tai 8 jackfruits on the coastal sand according to claim 1, wherein in the step (4), the fertilizer filling comprises root fertilizer filling and leaf surface spraying, the root fertilizer filling is carried out 2-3 days before seedling transplantation, the leaf surface spraying is carried out 1-2 days before seedling transplantation, and the drug filling is carried out 1-2 days before seedling transplantation; the top surface of the soil pier is a plane.

5. The method for planting the Tai 8 jackfruits on the coastal sand according to claim 1, wherein in the step (5), fertilizer is applied by applying fertilizer once every 8-10 days or 1-2 times per bud, and each fertilizer applying water is 9-10 kg per plant of newly planted seedlings; the foliar fertilizer is sprayed by spraying the calcium magnesium lactate liquid once every 45-60 days.

6. The method for planting Tai 8 jackfruit in coastal sand according to claim 1, wherein in the step (7), pruning is performed on a sunny day at the young age; the trimming procedure is: firstly, pruning competition branches, and secondly, pruning dense branches, cross branches, dead branches and pest branches, and directly pruning the branches from the base of the branches; then, strong branches with diameters larger than 1/3 of the trunk are trimmed, branches growing downwards at the top end parts of the strong branches are trimmed firstly when the proportion of the strong branches to the tree crowns is too large, a part of small branches and leaves are reserved for assisting photosynthesis, and only one strong branch can be trimmed at a time when the number of the strong branches is several.

7. The method of planting jack-8 in coastal sandy land of claim 1 wherein a wind band is provided around the planting area.

8. The method of planting jack-grass in coastal sandy land of claim 7 wherein the wind resistant band is a windbreak forest.