CN108966970B - Method for preventing and controlling weeds in farmland in arid region - Google Patents
Method for preventing and controlling weeds in farmland in arid region Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
Abstract
The invention provides a method for preventing and controlling farmland weeds in arid regions, in particular to preventing and controlling malignant weeds such as black nightshade, quinoa, purslane, amaranthus retroflexus and the like, which comprises the steps of treating soil with a herbicide containing a PDS inhibitor before crop seeding in the arid regions, and then mulching and seeding; or after the crops are sowed in the arid area by covering films, the herbicide containing the PDS inhibitor is delivered to the place with weeds in the films by a drip irrigation system; or treating the soil with the herbicide containing the PDS inhibitor before sowing the crops in the arid area, and then delivering the herbicide containing the PDS inhibitor to the place where weeds grow in the film through a drip irrigation system after film covering and sowing. The method provided by the invention can well control the malignant weeds such as black nightshade, quinoa, purslane, redroot amaranth and the like, has small dosage, is safe and environment-friendly to crops, and can be used mechanically, thereby saving time and labor.
Description
Technical Field
The invention belongs to the technical field of plant protection, and particularly relates to a method for preventing and controlling weeds in a farmland in a drought area.
Technical Field
The global climate is various, the community composition and the weed occurrence condition of weeds are different, and the farming system and the harvesting mode of crops in each region are also different, so the weed control technology has great particularity and difference.
Cotton belongs to the genus malvaceae in plant taxonomy and is one of the leading commercial crops in the world.
Cotton is a light-loving crop and is suitable for growing under more abundant lighting conditions. Xinjiang belongs to arid climate, has abundant photo-thermal and rare rainfall all the year round, and is the largest production area of Chinese cotton. Due to the continuous adjustment of the planting mode and the structure of the Xinjiang cotton and the long-term use of trifluralin, pendimethalin and the like as main soil treatment agents, the variety and the number of malignant weeds in the Xinjiang cotton field are increased, and the yield and the quality of the cotton are seriously influenced. Among them, the harmful effects of the malignant weeds such as black nightshade, quinoa, purslane, amaranthus retroflexus are particularly serious.
At present, the methods for preventing and killing weeds in cotton fields mainly comprise artificial weeding and chemical weeding. The artificial weeding is adopted to prevent and remove the nightshade, although the weeding is safe and effective, the cost is high, and the weeding is not suitable for mechanized and large-scale cotton production. Therefore, the development of chemical weeding technology is always the main direction of scale cotton production.
In 2005, pendimethalin and other herbicides were studied for the control of solanum nigrum by liangjinfeng and lijianping respectively; in 2014, the poplars, the Liangyou, the Jia Huijian and the like find that the pendimethalin can not effectively control the solanum nigrum at a low dose, the cotton phytotoxicity is easily caused at a high dose, and the higher the concentration of the pesticide is, the stronger the phytotoxicity to cotton seedlings is (written in university of Jiangxi agriculture, 2014, 36(1), 102-108); in 2015, Wangjianfeng et al also found that pendimethalin is not ideal in effect and durability for removing nightshade (rural science 2015, 3, 54-55). It can be seen that pendimethalin is not suitable as the major herbicide in cotton field methods for controlling solanum nigrum.
In 2011, Jianghai lan and the like research the effect of four stem and leaf treatment herbicides such as glyphosate on preventing and controlling the solanum nigrum in the cotton field. The result shows that 750g of glyphosate is used for controlling the solanum nigrum optimally, and the control effect can reach 100%. Although the method has good control effect, the environment is seriously damaged due to the excessive use amount of the glyphosate, and in addition, the method usually adopts a directional spraying method for using the glyphosate in the cotton field, so that the method is time-consuming and labor-consuming, and is easy to splash on cotton to cause phytotoxicity on the cotton.
In 2014, the Madong plum and the Gahui province respectively find that 96% of metolachlor missible oil applied with water drops has certain control effect (plant control effect is 70.2%) on the cotton field malignant weed solanum nigrum (rural science and technology, 2014, 11 and 42). The method cannot effectively control Solanum nigrum.
Therefore, how to safely and efficiently control solanum nigrum in a cotton field is always a hotspot and a difficulty for the research of technicians in the field.
The zucchini seeds are cucurbitaceae crops mainly for collecting seeds, and the seeds contain rich nutritional value and are highly sought by vast consumers at home and abroad. The sales volume in the international market is continuously rising, the market prospect is wide, and the method becomes one of economic crops which are newly emerged in recent years.
The pumpkin seeds are drought-resistant, waterlogging-resistant and light-loving, and are suitable for being planted in arid areas. At present, the planting area of the seed summer squash is spread in Gansu, inner Mongolia, Shanxi and other places in China. Xinjiang also becomes one of the most suitable areas for planting the seed summer squash due to unique geographic environment and climate factors, and investigation data in 2015 shows that the planting area of the Xinjiang seed summer squash reaches about 80 ten thousand mu, and the Xinjiang seed summer squash becomes the largest seed summer squash planting area.
Due to the fact that geographical environment, climatic factors, sowing modes and the like are approximately the same as those of Xinjiang cotton and are often crop-rotated with the cotton, the number of malignant weeds such as black nightshade, quinoa, purslane, redroot amaranth and the like in the field of the seed summer squash is large, and the yield of the seed summer squash is seriously influenced.
At present, the chemical control method of the weeds in the field of summer squash with seeds is less, the most common method is to use 48 percent butralin emulsifiable concentrate herbicide, and the herbicide has certain control effect on quinoa, purslane, redroot amaranth and the like, but has poor control effect on malignant weeds, namely nightshade.
Therefore, the development of a method for safely and efficiently preventing and controlling the malignant weed solanum nigrum in the field of the seed cucurbita pepo not only has higher theoretical research significance, but also is a practical problem to be solved urgently by local farmers.
Through a large amount of mental labor and experimental verification, the inventor develops a method which can prevent and remove the solanum nigrum efficiently and is safe to crops. The method has special effect on preventing and killing weeds in farmland in arid area such as cotton field and seed field of Cucurbita pepo L.and especially Solanum nigrum, Chenopodium album, Portulaca oleracea, Amaranthus retroflexus, etc.
Disclosure of Invention
The invention aims to provide a method for preventing and controlling weeds in farmland in arid regions, aiming at the defects of the prior art, the method can remove the malignant weed solanum nigrum, has good prevention effect on other weeds such as quinoa, purslane, amaranthus retroflexus and the like, and is safe for crops such as cotton and seed summer squash.
Phytoene Dehydrogenase (PDS) inhibitors, which primarily inhibit the conversion of phytoene in plants to carotenoids, leading to chlorophyll destruction, are an important class of chemical herbicides. In particular, the present invention is a method for controlling weeds in arid areas of a farmland, which comprises,
a) before sowing crops in arid regions, treating soil with herbicide containing PDS inhibitor and then sowing the crops in a film covering manner; or
b) After the crops are sowed in the arid area by covering films, the herbicide containing the PDS inhibitor is delivered to the place where weeds grow in the films through a drip irrigation system; or
c) Before the crops are sowed in arid areas, the soil is treated by the herbicide containing the PDS inhibitor, and after the crops are sowed in a film covering manner, the herbicide containing the PDS inhibitor is delivered to the place where weeds grow in the film through a drip irrigation system.
Specifically, the PDS inhibitor of the present invention may be one or more of fluridone, flurochloridone, norflurazon, diflufenican, beflubutamid, pyridaphenthone, benzoflon, flurtamone, and other PDS inhibitor compounds and agriculturally acceptable salts thereof. The PDS inhibitor compound which is preferred as a herbicide of the present invention is one or more of fluridone, fluorochloridone, norflurazon, flurtamone or an agriculturally acceptable salt thereof, more preferably fluridone.
In addition to the above-mentioned PDS inhibitors, the herbicide may contain one or more other active ingredients such as pendimethalin, prometryn, oxyfluorfen, acetochlor, metolachlor, pyrithiobac-methyl and the like. By combining with other effective components, the weeding spectrum can be effectively expanded, and the universality and the effectiveness of the method are improved.
The content of the herbicide active ingredient is 0.1 to 90% (by weight), and generally varies depending on the type of formulation, and preferably 5 to 80% (by weight). The application rate of the active ingredient in the herbicides of the invention is generally from 1 to 5000g a.i./ha, preferably 100-.
The herbicide can be a preparation such as missible oil, an aqueous emulsion, a microemulsion, a suspending agent, a soluble liquid, wettable powder, granules, powder or water dispersible granules. The specific formulation form depends on the nature of each active ingredient and the specific application.
The herbicide is prepared by mixing the effective components with solvent and/or solid carrier, and adding surfactant such as emulsifier, wetting agent, dispersant, thickener, defoaming agent, antifreeze agent, dye, antiseptic, etc. as required.
The solvent includes water, aromatic hydrocarbons (such as solvent oil and paraffin), alcohols (such as carbitol and tetrahydrofurfuryl alcohol), ketones (such as isophorone), amides (such as fluquinamide), esters (such as fatty acid methyl ester), heterocycles (such as N-butyl-2-pyrrolidone, NBP), etc.
The solid carrier comprises natural minerals (such as kaolin, pulvis Talci, bentonite, and diatomaceous earth), plant source carrier (such as corn starch), synthetic carrier (such as white carbon black), and inorganic salts (such as ammonium sulfate, magnesium sulfate, and sodium sulfate).
The surfactant may be an emulsifier, wetting agent or dispersing agent of ionic or non-ionic type. For example, fatty alcohol-polyoxyethylene ether, castor oil-polyoxyethylene ether, alkylphenol polyoxyethylene ether, aralkyl phenol polyoxyethylene ether, sodium alkylsulfate, sodium alkylbenzenesulfonate, calcium alkylbenzenesulfonate, alkylnaphthalenesulfonate, sodium/calcium lignosulfonate, and polycarboxylic acid salts.
The thickening agent can be a natural polymer such as xanthan gum, arabic gum, sodium carboxymethylcellulose, or a synthetic such as polyvinyl alcohol, magnesium aluminum silicate, and the like.
The defoaming agent can be organic silicone oil, fatty alcohol, fatty acid, etc.
The antifreeze agent can be polyhydric alcohol (such as ethylene glycol, propylene glycol, and glycerol), urea, calcium chloride, etc.
The antiseptic may be 1, 2-benzisothiazolin-3-one (BIT), 5-chloro-2-methyl-4-isothiazolin-3-one (CIT), 2-methyl-4-isothiazolin-3-one (MIT), etc.
The herbicide can also be applied by tank mixing the preparations of different active ingredients.
The weeds comprise black nightshade, quinoa, purslane, amaranthus retroflexus, cyperus rotundus or other broad-leaved weeds, grassy weeds and cyperaceae weeds, and the black nightshade, quinoa, purslane and amaranthus retroflexus are preferred.
The thickness of the film is generally 0.08 to 0.1 mm. The film comprises a colored or colorless film, preferably has water retention, light shielding and ultraviolet protection functions, and is easily biodegradable.
The crops of the invention are mainly cotton and zucchini.
The method is suitable for preventing and controlling weeds in arid areas, and the arid areas are areas with dry climate, abundant sunshine, less annual precipitation and evaporation capacity greater than precipitation, such as Xinjiang.
Compared with the prior art, the method has the following remarkable advantages: firstly, the dosage of the herbicide is less; secondly, the herbicide has high weed control effect and is safe to crops; the herbicide has wide herbicide controlling spectrum, and can be used for controlling black nightshade, quinoa, purslane, amaranthus retroflexus and the like; and fourthly, the medicine application is mechanized, and the time and the labor are saved.
Detailed Description
The following examples further illustrate some of the features of the present invention but are in no way intended to limit the scope of the invention. In each example, unless otherwise indicated, the percentages or percentages of each component refer to weight percent or weight ratios.
Formulation example 15% Fluazinone suspension
Weighing the raw fluazinone, water, a dispersing agent, a thickening agent and a preservative according to the formula, stirring at a high speed and dispersing uniformly, and then crushing by a sand mill until the average particle size is less than 3 microns to obtain the 5% fluazinone suspending agent.
Formulation example 242% Fluazinone suspension
Weighing the raw fluazinone, water, a dispersing agent, a thickening agent and a preservative according to the formula, stirring at a high speed and dispersing uniformly, and then crushing by a sand mill until the average particle size is less than 3 microns to obtain the 42% fluazinone suspending agent.
Formulation example 360% Fluazinone suspension
Weighing the raw fluazinone, water, a dispersing agent, a thickening agent and a preservative according to the formula, stirring at a high speed and dispersing uniformly, and then crushing by a sand mill until the average particle size is less than 3 microns to obtain the 60% fluazinone suspending agent.
Formulation example 480% norflurazon water dispersible granule
Weighing the fluazinam original drug, the dispersing agent, the wetting agent and the kaolin according to the formula, uniformly mixing, crushing by using an airflow crusher to obtain particles with the average particle size of less than 5 microns, adding 10% of water, kneading into a soft material, and granulating, drying and screening to obtain the 80% fluazinam water dispersible granule.
Formulation example 540% Fluoroxydim emulsifiable concentrate
Weighing the fluorochloridone technical material, the emulsifier and the solvent oil No. 1500 according to the formula, and stirring and dissolving until the mixture is uniform and transparent to obtain 40% fluorochloridone emulsifiable oil.
Formulation example 630% Fluazinone-Ethoxyfen emulsifiable concentrate
Weighing the raw material of the fluazifop-butyl, the raw material of the oxyfluorfen, the emulsifier, NMP and the solvent oil No. 1500 according to the formula, and stirring and dissolving the raw materials until the raw materials are uniform and transparent to obtain the 30 percent of the fluazifop-butyl oxyfluorfen emulsifiable solution.
Formulation example 720% Fluazinone-S-metolachlor microemulsion
Weighing the raw material of the fluazifop-butyl, the raw material of the metolachlor, the emulsifier, NMP and THF according to the formula, stirring and dissolving until the mixture is uniform and transparent, then adding water while stirring, and stirring until the mixture is uniform and transparent to obtain the 20 percent of the fluazifop-butyl-metolachlor microemulsion.
Formulation example 875% wettable powder of fluazinone-prometryn
Weighing the raw fluazinone, the raw prometryn, the dispersing agent and the kaolin according to the formula, uniformly mixing, and then crushing by an airflow crushing system to obtain 75% fluazinone-prometryn wettable powder with the average particle size of less than 5 microns.
Formulation example 98% Fluazinone-Fluroxypyr granules
2 percent of fluazinone
Fluroxypyr preparation 6%
Montmorillonite to make up to 100%
Weighing the raw material of the fluazinone, the raw material of the norflurazon and the montmorillonite according to the formula, uniformly mixing, crushing by a mechanical crushing system to be less than 100 meshes, adding water, kneading, granulating and drying to obtain 8% granular formulation of the fluazinone and the norflurazon.
Formulation example 1030% Fluazinone-Fluoroxydim suspension
Weighing a fluazifop-butyl technical material, SOPROPHOR 3D 33, Atlox 4913, magnesium aluminum silicate, xanthan gum, BIT and water according to a formula, stirring at a high speed, sanding to obtain an aqueous suspension A with the average particle size of below 2 micrometers, weighing a fluazifop-butyl technical material, a farm emulsion 500#, a farm emulsion 600# and a solvent oil 1500# according to the formula, uniformly stirring to obtain an emulsifiable solution B, slowly adding the aqueous suspension A into the emulsifiable solution B after high-speed stirring, and then carrying out high-speed shearing to obtain the 30% fluazifop-fluazifop suspending agent.
Formulation example 1125% Fluazinone-Pyrithiobac-sodium Water dispersible granule
Weighing the raw flumetsulam, the pyrithiobac-sodium, the dispersing agent, the wetting agent and the kaolin according to the formula, uniformly mixing, crushing by a jet mill to obtain particles with the average particle size of less than 5 microns, adding 10% of water, kneading into a soft material, and granulating, drying and screening to obtain the 25% flumetsulam-pyrithiobac-sodium water dispersible granule.
Formulation example 1236% Fluazinone-pendimethalin suspension
Weighing a fluazifop-butyl technical material, YUS-SC3, ethulans-500 lq, magnesium aluminum silicate, xanthan gum, BIT and water according to a formula, stirring at a high speed, sanding to obtain an aqueous suspension A with the average particle size of below 2 micrometers, weighing a pendimethalin technical material, a pesticide emulsion 500#, a pesticide emulsion 600# and a solvent oil 1500# according to the formula, stirring uniformly to obtain a missible oil B, then slowly adding the aqueous suspension A into the missible oil B after stirring at a high speed, and then shearing at a high speed to obtain the 36% fluazifop-pendimethalin suspending agent.
2 application example
Application example 1
In a Xinjiang Kyoho cotton planting base, before cotton sowing, a certain amount of 42 percent of fluridone suspending agent is diluted by water (the water consumption per hectare is 900 liters), then the cotton field soil is sprayed and mixed with soil, and then mulching sowing is carried out. And (4) performing control treatment by taking no film covering after sowing, and setting a blank control by spraying clear water. Then, the field management of the cotton is carried out according to the normal procedure, the cotton emergence rate and the cotton seedling growth condition of each treatment area are investigated 20-30 days after the sowing, and the control effect is investigated 45 days after the pesticide application. The control effect was calculated as follows:
control effect (%) ([ number of weed plants in placebo zone-number of weed plants in treated zone ]/number of weed plants in placebo zone × 100%
The control effect and the cotton safety are shown in the table 1.
TABLE 1 control of weeds in Cotton fields and safety of different treatments with 42% Fluazinone suspension at different cultivation conditions
Data in open white control brackets in table is number of weed plants.
Application example 2
In a Xinjiang stone river cotton planting base, before cotton sowing, a certain amount of PDS inhibitor series products are diluted by water (the water consumption per hectare is 900 liters), then the cotton field soil is sprayed and mixed with soil, and then mulching and sowing are carried out. Clear water was used as a control treatment, and the other part of the herbicide containing a non-PDS inhibitor was used as a control treatment. Then, cotton field management is carried out according to a normal procedure, the cotton emergence rate and the cotton seedling growth condition of each treatment area are investigated 20-30 days after sowing, and the herbicide effect is investigated 45 days after application. The control effect is calculated as follows:
control effect (%) ([ number of weed plants in placebo zone-number of weed plants in treated zone ]/number of weed plants in placebo zone × 100%
The test results are shown in Table 2.
TABLE 2 control of weeds in cotton fields and safety of cotton with several products containing PDS inhibitors
Data in open white control brackets in table is number of weed plants.
Application example 3
In a Xinjiang cotton test field, after sowing, film mulching treatment is firstly carried out, a drip irrigation system is arranged under a film in advance, and after the cotton seedlings emerge for 1 month, chemical drip irrigation treatment is carried out. Before the liquid medicine is drip-irrigated, a certain amount of clear water is firstly used for carrying out drip irrigation to moisten the soil, the serial products of the fluazinone are diluted by water and then are sent to a cotton field through a drip irrigation system, and finally, a certain amount of clear water is used for carrying out drip irrigation to clean the liquid medicine in the drip irrigation system. And after the drip irrigation is finished, closing the drip irrigation system. And (4) performing control treatment by taking no film covering after sowing, and setting a blank control by spraying clear water. The weed base number of the cotton field is investigated before the pesticide is applied, the number of residual weed plants is investigated 30 days after the pesticide is applied, and the control effect is calculated. And observing the growth, flowering and fruiting of cotton plants.
The prevention effect calculation formula is as follows:
e1 indicates strain control (%); CK (CK)0Indicates the number of weed plants (plants) before application in the blank control zone; CK (CK)1Indicates the number of weed plants (plants) after the application of the blank control zone; pt0Indicates the number of weed plants (plants) before application in the agent treatment area; pt1The number of weed plants (plants) after application to the agent-treated area is shown.
The control results are shown in table 3. In addition, the cotton plants treated by drip irrigation of the serial products of the fluopicolide have normal growth and no phytotoxicity.
TABLE 3 control of weeds in cotton fields by drip irrigation treatment of serial products of fluazinone
Application example 4
In a planting base of a common field of a fragrant grass lake in Xinjiang, before seeds are sowed by the summer squash, a certain amount of PDS inhibitor series products are diluted by water (the water consumption per hectare is 900 liters), then soil spraying and soil mixing treatment are carried out, then film covering and sowing are carried out, then field management of the summer squash is carried out according to a normal program, the emergence rate and the plant growth condition of the summer squash in each treatment area are investigated 20-30 days after sowing, and herbicide effect investigation is carried out 40 days after application of the herbicide. The control effect is calculated as follows:
control effect (%) ([ number of weed plants in placebo zone-number of weed plants in treated zone ]/number of weed plants in placebo zone × 100%
The test results are shown in Table 4.
TABLE 4 control effect and crop safety of several PDS inhibitor series products on field weeds of Cucurbita pepo seeds
Data in open white control brackets in table is number of weed plants.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
Claims (7)
1. A method for controlling weeds in farmland in arid regions, which comprises,
a) before sowing crops in arid regions, treating soil with herbicide containing PDS inhibitor and then covering with film for sowing; or
b) After the crops are sowed in the arid area by covering films, the herbicide containing the PDS inhibitor is delivered to the place where weeds grow in the films through a drip irrigation system; or
c) Treating soil with a herbicide containing a PDS inhibitor before sowing crops in arid regions, and then conveying the herbicide containing the PDS inhibitor to a place with weeds in a film through a drip irrigation system after film covering and sowing;
the PDS inhibitor is the fluridone, and the herbicide is a 42% fluridone suspending agent and comprises the following components: 42 wt% of fluazifom D, 5 wt% of surf D, 49133 wt% of Atlox, 2 wt% of Borresperse NA, 5 wt% of propylene glycol, 1 wt% of magnesium aluminum silicate, 0.1 wt% of xanthan gum, 0.1 wt% of BIT and water to make up 100 wt%.
2. The method as claimed in claim 1, wherein the application amount of the effective ingredient in the herbicide is 1ga.i./ha to 5000 ga.i./ha.
3. The method as claimed in claim 1, wherein the application amount of the effective ingredient in the herbicide is 100ga.i./ha to 2000 ga.i./ha.
4. The method of claim 1, wherein the herbicide is combined with other active ingredients, the other active ingredients including one or more of pendimethalin, oxyfluorfen, acetochlor, metolachlor, pyrithiobac-sodium.
5. The method of claim 1, wherein the film has water-retaining, light-shielding, and ultraviolet-shielding functions.
6. The method of claim 1 wherein the crop is cotton or zucchini.
7. The method of claim 1, wherein the weeds are one or more of black nightshade, quinoa, purslane, and amaranthus retroflexus.
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| CN108464304A (en) * | 2018-05-15 | 2018-08-31 | 陕西上格之路生物科学有限公司 | A kind of Herbicidal combinations containing fluridone and Oxyfluorfen |
| CN108378042A (en) * | 2018-05-15 | 2018-08-10 | 陕西上格之路生物科学有限公司 | A kind of Herbicidal combinations containing fluridone and prometryn |
| CN110208457A (en) * | 2019-03-11 | 2019-09-06 | 毛志华 | A kind of fluridone prevents and kill off the validity check method of black nightshade weeds for Cotton Fields |
| CN111657289B (en) * | 2020-06-05 | 2021-12-17 | 合力科技股份有限公司 | Special herbicide composition for flowers and preparation, application and control method thereof |
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| CN104871883A (en) * | 2015-06-04 | 2015-09-02 | 吉林省农业科学院 | Chemical weeding method for dry crops based on drip irrigation under film |
| CN106359397A (en) * | 2015-07-24 | 2017-02-01 | 四川利尔作物科学有限公司 | Weeding composition and application thereof |
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| GB1560476A (en) * | 1975-10-16 | 1980-02-06 | Lilly Co Eli | Herbicidal compositions |
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| CN102326551A (en) * | 2011-07-11 | 2012-01-25 | 陕西美邦农药有限公司 | Weeding composition containing diflufenican |
| CN104170825A (en) * | 2014-09-11 | 2014-12-03 | 河南中天恒信生物化学科技有限公司 | Composite herbicide containing pyrithiobac-sodium, fluorochloridone and haloxyfop-R-methyl, and application thereof |
| CN104871883A (en) * | 2015-06-04 | 2015-09-02 | 吉林省农业科学院 | Chemical weeding method for dry crops based on drip irrigation under film |
| CN106359397A (en) * | 2015-07-24 | 2017-02-01 | 四川利尔作物科学有限公司 | Weeding composition and application thereof |
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