CN102972246A - Method for removing weeds in the field of crops - Google Patents
Method for removing weeds in the field of crops Download PDFInfo
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Abstract
The invention provides a method for removing weeds in the field of crops. Dacron filament spun-bonded hot rolling non-woven fabrics are regarded as weeding ground fabrics and are covered and fixed on the surface of the field. Openings are reserved for crop seeds in accordance with fix planting intervals. The openings are sealed by soil after the crop seeds are planted on the ground fabric openings. Growth of the weeds in the field of crops is effectively controlled in crop planting period. Weeding rate is up to 100%. The method for removing the weeds in the field of crops is of being low in cost, convenient to operate, free from pollution to the environment and side effects towards the growth of the crops. Crop output is effectively promoted which are suitable for popularization and use.
Description
Technical field
The present invention relates to the crop protection field, particularly a kind of method of removing weeds in the crops field.
Background technology
Weeds are the mcroorganism disasters in the agricultural production, and according to relevant departments' statistics, the whole nation has 1,500,000,000 mu of arable lands approximately, suffers reaching more than 300,000,000 mu of serious crop smothering every year.Because crop smothering, more than 1,700 ten thousand tons in national annual underproduction grain, 250,000 tons in cotton are used for the weeding labor intensive and reached for 50～6,000,000,000 work work days.Cause the main cause of serious consequence to have: 1. weeds and crops fight for nutrient, moisture and sunlight, in weeds and the crop competition, have deprived a large amount of water, fertilizer and the sunlight of crop.The viability of weeds is stronger, and root system is flourishing than crop root, thereby the ability that absorbs water, fertilizer, nutrient is greater than crop.In addition, the fast growth of weeds, with luxuriant foliage and spreading branches in leafy profusion, the cover crops plant makes illumination not enough, affects the crop normal development, finally causes the agricultural product quality and quantity to descend; 2. weeds provide middle parasitic for pathogen of crop, insect, have encouraged the generation of sick worm; 3. the plant of some weeds or seed have prickle or toxin, affect farm work, easily scathing.Owing to above reason weeds become disaster in the agricultural production, wherein the control technology of open country, earth's surface, protection ground weeds is as requisite sport technique segment in the proportion of crop planting, and the quality of herbicidal effect is directly connected to the quality and yield of crops.
At present; in the crops on China's open country and protection ground produce; the weeds control problem on earth's surface generally is to take two kinds of methods of chemistry and physics to solve; wherein chemical treatment mainly is to adopt chemical herbicide that weeds are controlled; physical treatment mainly is to adopt white polyethylene plastic film and black polyethylene plastic film mulching in the earth's surface, utilizes the growth of high-temperature control weeds.
Chemical herbicide refers to make weeds that withered medicament occurs up hill and dale or selectively, can suppress, hinder or disturb the physiological and biochemical procedure of crop, as respiration, photosynthesis, hormone regulate, living matter synthetic etc., weeds can not be grown and withered by normal growth, and present stage, mostly the weed killer herbicide main components of using were nitrophenol, chlorophenol, carbamic derivative more.Weed killer herbicide is beneficial to large-scale operation, so be widely used in the weeding of open country crops because herbicidal effect is obvious.But a large amount of weed killer herbicides drop into when bringing economic benefit, have also caused residual in farm environment of weed killer herbicide chemical composition, cause environmental pollution, and this has caused great threat to environment and human health, and some biology also therefore and extinction or endangered.In addition, because the peasant uses the shortcoming of knowledge and the improper use of medical instruments to weed killer herbicide, often cause crop phytotoxicity, directly affect output and the product safety of crops.
White, black plastic mulch film are in recent years to use more a kind of physics herbicidal methods, the white plastic mulch film have suppress weed growth, heat, the effect of soil moisture conservation, fertilizer conservation, volume increase, the black plastic mulch film can also be used for shading and cover except the above characteristics that tunica albuginea is arranged.The main material of mulch film is the polymer such as polyethylene, polyvinyl chloride, can not decompose voluntarily disappearance at natural world, and a large amount of residues will hinder the agricultural tillage of next batch, and make soil compaction, cause water in the soil, gas, fertile constricted flow affect germination rate and the plant growth of seed.It is reported and used mulch film not processed in continuous 2 years, can make per hectare mulch film amount be increased to 103.5kg, make wheat yield 9%; If used in continuous 5 years, then the per hectare residual-film amount is increased to 345kg, makes wheat yield 26%, and the underproduction amplitude of other crops is also 8.3%～54.2%.
White, black mulch film in use, with white, black film mulching on facility and open country furrow face, and will around real with soil pressure, open osculum at mulch film during the kind plant and customize.Utilize high temperature under the film, anoxic, reach herbicidal effect.There is the mulch film cracky in the physics herbicidal methods such as white plastic mulch film, black plastic mulch film, herbicidal effect descends, lays complex procedures, recruitment is many, difficult reclaims because breakage causes, mulch film has been damaged seriously and can't have been used after finishing in growth season, the peasant again can residual a large amount of damaged mulch films when removing in the field, thereby cause the defective such as environment " white " pollution.Therefore in the urgent need to a kind of simple to operate, with low cost and environmentally friendly method of removing farmland weed
Summary of the invention
The object of the invention is to overcome the defective that exists in the prior art, a kind of method of removing weeds in the crops field is provided.
The present invention at first filters out the material that is suitable for farmland weed control to be the polyester filament spun-bonded hot rolling non-woven fabric and to have determined the correlation technique parameter of nonwoven from several respects such as Weed control effect, cost accounting, except the Weed control effect of meadow cloth obviously is better than white, black mulch film.
Method of removing weeds in the crops field provided by the invention, to be the polyester filament spun-bonded hot rolling non-woven fabric as covering except meadow cloth and being fixed in the earth's surface, land for growing field crops with material, reserving opening except meadow cloth for the crop seed respectively by the field planting spacing afterwards, behind opening part kind plant, with soil opening is sealed up.
In the method for the present invention, described except meadow cloth be weight 30 ~ 50g/m
2, longitudinal tensile strength 60 ~ 120N/50cm, longitudinal extension rate 18% ~ 22%, transverse tensile strength 30 ~ 65N/50cm, longitudinal extension rate 22% ~ 28%, thickness is the polyester filament spun-bonded hot rolling non-woven fabric of 0.18 ~ 0.22mm.
Preferably, described except meadow cloth be weight 40g/m
2, longitudinal tensile strength 94N/50cm, longitudinal extension rate 20%, transverse tensile strength 49N/50cm, longitudinal extension rate 25%, thickness is the polyester filament spun-bonded hot rolling non-woven fabric of 0.2mm.
As long as satisfy above-mentioned specification, weeding cloth of the present invention can adopt the conventional method of other field of textiles to produce and get.
Preferably, described color except meadow cloth is black.
In the method provided by the invention, the described meadow cloth specification of removing can be selected according to field furrow face size.According to field furrow face and practical application, select except meadow cloth specification wide be 7 meters, length can be selected according to actual furrow face length degree.
In one embodiment of the invention, select except meadow cloth specification be 7 meters * 10 meters.
Above-mentioned specifications parameter is to draw on the basis of lot of experiments, and in the test, the inventor finds, if the weeding cloth weight of every square meter excessive (being that density is too high) then can impact to crop growth possible crushing crops; If but density is excessively low, then its effect is affected again.Different colors also can cause very big-difference to its herbicidal effect, and absorption optical is better according to more dead color system ground cloth herbicidal effect, such as brown, navy blue, brown or black.
In the inventive method, the method that will be fixed in the earth's surface, land for growing field crops except meadow cloth is to cover on the furrow face of land for growing field crops except meadow cloth, will be fixed in concave surface between furrow except meadow cloth with fixed part.
In one embodiment of the invention, be minor face (7 meters) with weeding cloth perpendicular to the furrow face, long limit (10 meters) is parallel to be covered on the furrow with the furrow face.7 meters * 10 meters specifications except meadow cloth for 1 meter wide furrow, can cover 6 furrow; For 1.5 meters wide furrow, can cover 4 furrow.
In the inventive method, described fixed part is U-shaped fork spare, the long 12cm of U-shaped minor face, 15 centimetres of the long length of sides.
In one embodiment of the invention, U-shaped fork spare is that No. 9 steel wires fold and form.Along the long limit of a side except meadow cloth weeding cloth is fixed in concave surface between furrow with ∪ type fork part, U-shaped fork spare is fixed one at furrow face homonymy every 1 meter; After fixing the long limit of a side weeding cloth is paved at the furrow face, be fixed by same method on the long limit of the opposite side of furrow face, and the fixing horizontal position that makes long limit, both sides is all at a distance of 0.5m, make between furrow the U-shaped fork spare of both sides concave surface be "the" shape and fix.See Fig. 1.
Those skilled in the art can select different fixed parts according to actual conditions, as long as can reach the purpose that ground cloth firmly is fixed in the field.
Preferably, being the T-shape mouth except reserving opening by the field planting spacing on the cloth of meadow, with soil the T-shape mouth is sealed behind the field planting crop seed.The T-shape mouth is compared its advantage and is easy to operate with the cross mouth, easily sealing is difficult for string wind after the sealing.
Preferably, the position of field planting crop seed is in T-shape mouth intersection anyhow.
In one embodiment of the invention, the T-shape mouth is grown crosswise and is 12cm, the perpendicular long 10cm that is.
A kind of method of removing weeds in the crops field provided by the invention, also be included in finish planting season after, reclaim except meadow cloth, drying keeps in Dark Place.
Described crops are wild cabbage, broccoli, capsicum, lettuce, milk Chinese cabbage, romaine lettuce, rape, celery, crowndaisy chrysanthemum, leek
The preservation condition of weeding cloth and service life: the preservation environment of the weeding cloth of recovery is selected environment dry, lucifuge as far as possible; Service life is generally in 2～3 years.
The present invention is intended to utilize the Novel biocontrol material that a kind of quality is light, toughness easily reclaims by force, collecting efficiency is high, to substitute traditional polyethylene or polyvinyl chloride mulch film or chemical herbicide, thereby " white " pollution of plastic film and the chemicals pollution problem in the weed killer herbicide use have been avoided, the purpose that finally reach easy laying, lack recruitment, Weed control effect is good, free from environmental pollution.The fixation fork spare of the weeding cloth that the present invention designs for purpose less with simple to operation, recruitment and laying, fixing means have improved efficiency greatly, and two people can finish the laying on 10 mu of ground in 6 hours.The present invention from the angle that solves the mulch film white pollution determined weeding cloth recovery, utilize aim, utilize the callable characteristic of material good toughness, keep well, preserve after each the production, and then repeatedly use.
For deficiency and the defective of existing weeding technology, the technology of the present invention is selected new material, has obtained preferably Weed control effect, and the below sets forth its effect and advantage in minute several aspects.
1, Weed control effect
Wild cabbage, broccoli in the open country plantation are taked 5 kinds of weeding patterns, are respectively: cover white mulch film, cover black mulch film, remove meadow cloth, artificial weeding, chemical weed control.Its herbicidal effect shows: the residential quarter weeds of laying weeding cloth in the wild cabbage growing area are zero, and herbicidal effect reaches 100%; The residential quarter weed density that the broccoli growing area is laid weeding cloth is 9.22 strains/chi
2, weight is 10.11g, herbicidal effect reaches 96.7%.Result of study finds that no matter plant wild cabbage or broccoli, its herbicidal effect all is followed successively by except meadow cloth＞artificial weeding＞chemical weed control＞black film＞tunica albuginea.
2, plant growth
By inquiry the crop plant height under the different weeding patterns, hat diameter, number of blade physical signs show: lay except meadow cloth and can improve wild cabbage, broccoli in plant height, hat diameter, the number of blade of whole breeding time, but its effect is apparent in view in early days.Rule is weeding cloth＞black film tunica albuginea＞artificial weeding＞contrast＞chemical weed control.
3, output, commodity rate
Lay the single plant yield of wild cabbage except meadow cloth, broccoli all apparently higher than other processing, exceed respectively tunica albuginea 15.33%, black film 9.2%, chemical weed control 9.7%; In addition, the ratio that the ratio that reaches the outlet level has reached 36%, Da Putong market level reaches 64%, and the ratio that does not meet commercial standards is 0, apparently higher than other processing.
4, cost accounting
Cost of labor: same 10 mu of open country field of vegetables, lay except meadow cloth recruitment 2 people * 6 hours=12 man-hours; And laying plastic is with 2 people * 15 hour=30 man-hours, and chemical weed control is with 2 people * 9 hour=18 man-hours.By 10 yuan of calculating in per man-hour, use herbicidal methods of the present invention can save respectively 180 yuan, 60 yuan than laying plastic and chemical weed control method at 10 mu of show-through field of vegetables.
Material cost: same 10 mu of open country field of vegetables, lay except meadow cloth with 95 (7 meters * 10 meters) * 25 yuan/piece=2375 yuan, every weeding cloth can use 3 years, cost is 79.1 yuan/mu/years; White mulch film, black mulch film: lays 15 kilograms of (0.014cm is thick) * 14 of the white mulch film of needs, 1 mu of ground yuan/kilogram=210 yuan; 15 kilograms of (0.014cm is thick) * * 8 of black mulch film yuan/kilogram=120 yuan.Because white, black mulch film can only be with 1 year, so cost is 210 yuan/mu/years of white mulch films, 120 yuan/mu/years of black mulch films.
But herbicidal methods establishment weed growth of the present invention, promotion crop yield, minimizing weed killer herbicide consumption, minimizing manually drop into, save fertilizer, soil moisture conservation, and except meadow cloth can repeat for many years, recycling, lightweight, lay and store convenient, can thoroughly separate the white pollution problems that plastic film forms simultaneously.
Description of drawings
Fig. 1 is that herbicidal methods of the present invention is laid the ground Butut.
Fig. 2 is that herbicidal methods of the present invention is applied to outdoor vegetable figure.
Fig. 3 is that the herbicidal methods that tunica albuginea covers is applied to outdoor vegetable figure.
Fig. 4 is that the method for herbicidal methods of the present invention and black mulch film contrast is applied to stem and use the lettuce land for growing field crops, and the results stem is with the big or small comparison diagram of lettuce.
Embodiment
Following examples further specify content of the present invention, but should not be construed as limitation of the present invention.Without departing from the spirit and substance of the case in the present invention, modification or replacement to the inventive method, step or condition are done all belong to scope of the present invention.
If do not specialize, the conventional means that used technological means is well known to those skilled in the art among the embodiment.
Embodiment 1 is except the selection of meadow cloth and the foundation of herbicidal methods
2008.Select adopting polyester slice is raw material, and the weeding cloth that obtains material through antiseized long filament hot rolling and be polyester filament spun-bonded hot rolling non-woven fabric (PET), composition and be 100% terylene is for except meadow cloth.A, B, C ground cloth are the polyester filament spun-bonded hot rolling non-woven fabric in the present embodiment, and its specifications parameter is different, all available from the Shaoxing, Zhejiang Province city imperial spunbond Science and Technology Ltd. that shines.
A ground cloth specification: weight: 20g/m
2Longitudinal tensile strength: 46N/50cm; Longitudinal extension rate: 15%; Transverse tensile strength: 17N/50cm; Longitudinal extension rate: 15%; Thickness is 0.14mm, black, and every area is 7 meters * 10 meters.
B cloth specification: weight: 40g/m
2Longitudinal tensile strength: 94N/50cm; Longitudinal extension rate: 20%; Transverse tensile strength: 49N/50cm; Longitudinal extension rate: 25%; Thickness is 0.2mm, black, and every area is 7 meters * 10 meters.
C ground cloth specification: weight: 60g/m
2Longitudinal tensile strength: 143N/50cm; Longitudinal extension rate: 23%; Transverse tensile strength: 80N/50cm; Longitudinal extension rate: 28%; Thickness is 0.27mm, black, and every area is 7 meters * 10 meters.
Above-mentioned being applied to compared experiment in the inventive method, study its Weed control effect.
In the present embodiment, the meadow cloth that removes of A, B, three kinds of specifications of C is applied to respectively 3 adjacent field of vegetables earth's surfaces, (be that No. 9 steel wires fold and form with U-shaped fork spare, the long 12cm of U-shaped minor face, 15 centimetres of the long length of sides) along the long limit of a side except meadow cloth weeding cloth is fixed in concave surface between furrow, U-shaped fork spare is fixed one at furrow face homonymy every 1 meter; After fixing the long limit of a side weeding cloth is paved at the furrow face, be fixed by same method on the long limit of the opposite side of furrow face, and the fixing horizontal position that makes long limit, both sides is all at a distance of 0.5m, make the ∪ type of both sides concave surface between furrow pitch part and be "the" shape and fix.Reserving T-shaped opening except meadow cloth for the crop seed respectively by the field planting spacing afterwards, T-shaped opening horizontal edge is 12cm, and vertical edge is 10cm.Anyhow plant cabbage seedling in the intersection at the T-shape mouth, with soil opening is sealed up.In whole wild cabbage planting season, the herbicidal effect of the PET ground cloth of three kinds of different parameters specifications of research.Establish simultaneously check experiment, wild cabbage is directly planted in the field that does not namely cover PET ground cloth.After gathering in the crops wild cabbage, reclaim three kinds of ground cloth, treat that next batch plantation begins before, lay according to the method described above and cloth regularly, again plant the wild cabbage seedling.Experiment is 3 years so continuously.The results are shown in Table 1.
Table 1 weeding cloth is at the herbicidal effect (2008, Shunyi, Beijing) of open country field of vegetables
Annotate: data are the single-round survey results behind the harvested vegetable in the table, are the mean value of 3 residential quarter repeated sample of every processing.
Herbicidal effect shows: B cloth＞C ground cloth＞A ground cloth.According to convention, C ground cloth should be optimum, because its specifications parameter is all high, however experiment confirm, the herbicidal effect of B cloth is best.Although C ground cloth herbicidal effect, service life and B cloth are approximate, price is than the expensive 10 yuan/piece of B cloth; Herbicidal effect, service life that A ground cloth is processed are all poor than the ground cloth of other two kinds of specifications, therefore eliminate A ground cloth; Consider from angle and the herbicidal effect aspect of cost accounting, B cloth be chosen as among the present invention suitable use except meadow cloth.
The application of embodiment 2 the inventive method and effect (1) (wild cabbage, the broccoli of open-air plantation)
Test period: 2009.
1, Weed control effect
Wild cabbage, broccoli in the open country plantation are taked 5 kinds of weeding systems, are respectively: cover white mulch film; Cover black mulch film (being purchased from agricultural materials market, Shunyi, Beijing); Except meadow cloth (the B cloth among the embodiment 1 is laid and is planted according to the method for embodiment 1 record); Artificial weeding; Chemical weed control, kind are 48% trifluralin ec, per 667 square metres 150 milliliters of consumptions, and method is for before weeds emerge after field planting, and is to the water even spraying, mixed native immediately after the dispenser.Finish planting season, and behind the harvested vegetable (wild cabbage and broccoli), herbicidal effect shows: the residential quarter weeds of laying weeding cloth in the wild cabbage growing area are zero, and herbicidal effect reaches 100%; The growing area weed density that the broccoli growing area is laid the B cloth among the embodiment 1 is 9.22 strains/chi
2, weight is 10.11g, herbicidal effect reaches 96.7%.Concrete outcome sees Table 2.
Table 2 weeding cloth is at the herbicidal effect (2009, Shunyi, Beijing) in outdoor vegetable field
Annotate: data are the single-round survey results behind the harvested vegetable in the table, are 3 growing areas of every processing, the mean value of repeated sample.
The above results shows no matter plant wild cabbage or broccoli, and its herbicidal effect all is followed successively by except meadow cloth＞artificial weeding＞chemical weed control＞black film＞tunica albuginea.
2, plant growth
By inquiry the crop plant height under the different weeding patterns, hat diameter, number of blade physical signs show: lay weeding cloth and can improve wild cabbage, broccoli in plant height, hat diameter, the number of blade of whole breeding time, but its effect is apparent in view in early days.Rule is weeding cloth＞tunica albuginea＞artificial weeding＞chemical weed control.The plant growth index sees Table 3.
Table 3 plant growth index application form
Annotate: data are the mean value of 30 samples in the table.
3, output, commodity rate
Lay the single plant yield of wild cabbage except meadow cloth, broccoli all apparently higher than other weeding systems, the present invention who uses in the present embodiment is except the herbicidal methods of meadow cloth, and wild cabbage output exceeds respectively tunica albuginea 15.33%, black film 9.2%, chemical weed control 9.7%; In addition, the ratio that the ratio that reaches the outlet level has reached 36%, Da Putong market level reaches 64%, and the ratio that does not meet commercial standards is 0, apparently higher than other processing.Broccoli output exceeds respectively tunica albuginea 19.66%, black film 32.3%, chemical weed control 32.5%; In addition, the ratio that the ratio that reaches the outlet level has reached 36%, Da Putong market level reaches 64%, and the ratio that does not meet commercial standards is 0, apparently higher than other processing.
Sum up: use weeding cloth in open country wild cabbage, broccoli plantation, the result shows: the residential quarter weeds of laying weeding cloth in the wild cabbage growing area are zero, and herbicidal effect reaches 100%; The residential quarter weed density that the broccoli growing area is laid weeding cloth is 9.22 strains/chi
2, weight is 10.11g, herbicidal effect reaches 96.7%.In addition, no matter plant wild cabbage or broccoli, its herbicidal effect all is followed successively by weeding weeding cloth＞artificial weeding＞chemical weed control＞black film＞tunica albuginea, takes at wild cabbage and western indigo plant, and the herbicidal effect of tunica albuginea only is respectively 58.2%, 56.7%.Also find by site observation; lay tunica albuginea and can reach herbicidal effect in early days, but because tunica albuginea can printing opacity, do not affect the growth of weeds; see Fig. 3, so often can occur owing to the too fast and crowded broken film of weed growth, affect vegetable growth, fall low-producing phenomenon to the later stage.
The application of embodiment 3 the inventive method and effect (2) (being applied to lettuce in the greenhouse)
Test period: 2010.
Use except meadow cloth with lettuce at the greenhouse stem, two groups of processing are respectively: cover except meadow cloth (adopting the B cloth of embodiment 1); Cover black mulch film, finish planting season, the results stem is used lettuce, and measure plant height, weight, the result shows: the stem that the stem that weeding cloth is processed is processed than black mulch film (available from the agricultural materials market) with lettuce increases by 29.7% with the average plant height of lettuce, weightening finish 19.8% illustrates that weeding cloth has preferably facilitating effects.See Fig. 4.
Table 4 plant height, yield index application form
Annotate: data are the mean value of 30 samples in the table.
Experimental results show that, but herbicidal methods establishment weed growth of the present invention, promote crop yield, reduce the weed killer herbicide consumption, reduce manually drop into, save fertilizer, soil moisture conservation, can repeat for many years, recycling, lightweight, lay and store convenient, can thoroughly separate the white pollution problems that plastic film forms simultaneously.
The above only is preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. method of removing weeds in the crops field, it is characterized in that, be the polyester filament spun-bonded hot rolling non-woven fabric as covering except meadow cloth and being fixed in the earth's surface, land for growing field crops with material, reserving opening except meadow cloth for the crop seed respectively by the field planting spacing afterwards, behind opening part kind plant, with soil opening is sealed up.
2. the method for claim 1 is characterized in that, described except meadow cloth be weight 30 ~ 50g/m
2, longitudinal tensile strength 60 ~ 120N/50cm, longitudinal extension rate 18% ~ 22%, transverse tensile strength 30 ~ 65N/50cm, longitudinal extension rate 22% ~ 28%, thickness is the polyester filament spun-bonded hot rolling non-woven fabric of 0.18 ~ 0.22mm.
3. the method for claim 1 is characterized in that, described except meadow cloth be weight 40g/m
2, longitudinal tensile strength 94N/50cm, longitudinal extension rate 20%, transverse tensile strength 49N/50cm, longitudinal extension rate 25%, thickness is the polyester filament spun-bonded hot rolling non-woven fabric of 0.2mm.
4. the method for claim 1 is characterized in that, described except its color of meadow cloth be black.
5. the method for claim 1 is characterized in that, the method that will be fixed in the earth's surface, land for growing field crops except meadow cloth is to cover on the furrow face of land for growing field crops except meadow cloth, will be fixed in concave surface between furrow except meadow cloth with fixed part.
6. the method for claim 1 is characterized in that, being the T-shape mouth except reserving opening by the field planting spacing on the cloth of meadow, with soil the T-shape mouth is sealed behind the field planting crop seed.
7. method as claimed in claim 6 is characterized in that, the position of crop seed field planting is in T-shape mouth intersection anyhow.
8. method as claimed in claim 6 is characterized in that, the T-shape mouth is grown crosswise and is 12cm, the perpendicular long 10cm that is.
9. such as the arbitrary described method of claim 1 ~ 9, it is characterized in that, also be included in finish planting season after, reclaim except meadow cloth, drying keeps in Dark Place.
10. such as the arbitrary described method of claim 1 ~ 9, it is characterized in that described crops are wild cabbage, broccoli, capsicum, lettuce, milk Chinese cabbage, romaine lettuce, rape, celery, crowndaisy chrysanthemum or leek.
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| CN103999674A (en) * | 2014-05-22 | 2014-08-27 | 北京市农林科学院 | Method for promoting growth of parent seedlings in cold frames and suppressing seedling emergence of seeds falling to ground |
| CN107667749A (en) * | 2017-09-25 | 2018-02-09 | 四川省林业科学研究院 | Control careless method in Juglans regia trees forest land |
| CN108076947A (en) * | 2017-12-19 | 2018-05-29 | 安徽泓森高科林业股份有限公司 | Deep gloomy Chinese scholartree mountain planting weeding technique |
| CN105557401B (en) * | 2015-12-25 | 2019-01-01 | 湖南省核农学与航天育种研究所 | A method of with inhibiting fruit tree weed growth |
| CN109121908A (en) * | 2017-06-16 | 2019-01-04 | 中国热带农业科学院热带生物技术研究所 | The application of artificial grass, flannelette, woollen blanket, carpet in arable farming |
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