CN113180038A - Weeding slow-release agent for rice and use method thereof - Google Patents
Weeding slow-release agent for rice and use method thereof Download PDFInfo
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- CN113180038A CN113180038A CN202110426671.4A CN202110426671A CN113180038A CN 113180038 A CN113180038 A CN 113180038A CN 202110426671 A CN202110426671 A CN 202110426671A CN 113180038 A CN113180038 A CN 113180038A
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- Prior art keywords
- rice
- herbicide
- slow
- release agent
- release
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 109
- 235000009566 rice Nutrition 0.000 title claims abstract description 109
- 238000009333 weeding Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 29
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 108
- 239000004009 herbicide Substances 0.000 claims abstract description 99
- 230000002363 herbicidal effect Effects 0.000 claims abstract description 98
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 59
- 239000000203 mixture Substances 0.000 claims abstract description 52
- 241000196324 Embryophyta Species 0.000 claims abstract description 50
- FFSSWMQPCJRCRV-UHFFFAOYSA-N quinclorac Chemical compound ClC1=CN=C2C(C(=O)O)=C(Cl)C=CC2=C1 FFSSWMQPCJRCRV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000005472 Bensulfuron methyl Substances 0.000 claims abstract description 19
- XMQFTWRPUQYINF-UHFFFAOYSA-N bensulfuron-methyl Chemical group COC(=O)C1=CC=CC=C1CS(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 XMQFTWRPUQYINF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 15
- 239000002861 polymer material Substances 0.000 claims abstract description 11
- 229920000620 organic polymer Polymers 0.000 claims abstract description 10
- VIXCLRUCUMWJFF-KGLIPLIRSA-N (1R,5S)-benzobicyclon Chemical compound CS(=O)(=O)c1ccc(C(=O)C2=C(Sc3ccccc3)[C@H]3CC[C@H](C3)C2=O)c(Cl)c1 VIXCLRUCUMWJFF-KGLIPLIRSA-N 0.000 claims abstract description 8
- 239000008187 granular material Substances 0.000 claims description 17
- 239000010410 layer Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 15
- 238000013268 sustained release Methods 0.000 claims description 14
- 239000012730 sustained-release form Substances 0.000 claims description 14
- 238000003892 spreading Methods 0.000 claims description 12
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 239000002612 dispersion medium Substances 0.000 claims description 9
- 239000003995 emulsifying agent Substances 0.000 claims description 9
- 238000005469 granulation Methods 0.000 claims description 9
- 230000003179 granulation Effects 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 239000003381 stabilizer Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000000375 suspending agent Substances 0.000 claims description 9
- 239000003337 fertilizer Substances 0.000 claims description 7
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229960000892 attapulgite Drugs 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
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- 239000005995 Aluminium silicate Substances 0.000 claims description 3
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- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 108010073771 Soybean Proteins Proteins 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
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- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 3
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- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- 239000002639 bone cement Substances 0.000 claims description 3
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- 235000019322 gelatine Nutrition 0.000 claims description 3
- 235000011852 gelatine desserts Nutrition 0.000 claims description 3
- QPPQHRDVPBTVEV-UHFFFAOYSA-N isopropyl dihydrogen phosphate Chemical group CC(C)OP(O)(O)=O QPPQHRDVPBTVEV-UHFFFAOYSA-N 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004898 kneading Methods 0.000 claims description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 3
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 3
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 3
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000005720 sucrose Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000000230 xanthan gum Substances 0.000 claims description 3
- 229920001285 xanthan gum Polymers 0.000 claims description 3
- 235000010493 xanthan gum Nutrition 0.000 claims description 3
- 229940082509 xanthan gum Drugs 0.000 claims description 3
- 239000005018 casein Substances 0.000 claims description 2
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims description 2
- 235000021240 caseins Nutrition 0.000 claims description 2
- 235000019710 soybean protein Nutrition 0.000 claims description 2
- 238000009472 formulation Methods 0.000 claims 4
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 7
- 229940079593 drug Drugs 0.000 abstract description 6
- 238000002054 transplantation Methods 0.000 abstract description 2
- 241000192043 Echinochloa Species 0.000 description 10
- 241000234653 Cyperus Species 0.000 description 8
- 241001553700 Euphorbia lathyris Species 0.000 description 8
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
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- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
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- 239000005588 Oxadiazon Substances 0.000 description 2
- CHNUNORXWHYHNE-UHFFFAOYSA-N Oxadiazon Chemical compound C1=C(Cl)C(OC(C)C)=CC(N2C(OC(=N2)C(C)(C)C)=O)=C1Cl CHNUNORXWHYHNE-UHFFFAOYSA-N 0.000 description 2
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- 239000002609 medium Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 2
- LOAUVZALPPNFOQ-UHFFFAOYSA-N quinaldic acid Chemical compound C1=CC=CC2=NC(C(=O)O)=CC=C21 LOAUVZALPPNFOQ-UHFFFAOYSA-N 0.000 description 2
- 241001290610 Abildgaardia Species 0.000 description 1
- 229930192334 Auxin Natural products 0.000 description 1
- 241000254158 Lampyridae Species 0.000 description 1
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- 208000005374 Poisoning Diseases 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 239000002363 auxin Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000005693 branched-chain amino acids Chemical class 0.000 description 1
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- 235000013339 cereals Nutrition 0.000 description 1
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- 244000309146 drought grass Species 0.000 description 1
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- SEOVTRFCIGRIMH-UHFFFAOYSA-N indole-3-acetic acid Chemical compound C1=CC=C2C(CC(=O)O)=CNC2=C1 SEOVTRFCIGRIMH-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/12—Powders or granules
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
- A01N41/10—Sulfones; Sulfoxides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
- A01N43/42—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings condensed with carbocyclic rings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
Abstract
The invention relates to a weeding slow-release agent for rice, which comprises an inner layer of herbicide composition and an outer layer of organic polymer material with slow-release performance, wherein the herbicide composition comprises 0.1-25% of effective components by weight, 0-70% of auxiliary agents by weight of the total weight of the herbicide composition, and the balance of filler, the effective components comprise bensulfuron-methyl, quinclorac and benzobicyclon, and the mass ratio of the bensulfuron-methyl to the quinclorac to the benzobicyclon is 1:5: 7. The herbicide slow-release agent for rice provided by the invention combines the characteristics of weeds and rice seedlings in the rice seedling field, uses the closed herbicide, ensures a water layer of 3-5cm, ensures that the herbicide slow-release agent for rice can be fully dissolved, on one hand, the closed herbicide can form a drug film in the rice seedling field, and is in the seedling emergence peak period within 10 days of rice seedling transplantation, and the weed can be killed when touching the drug film on the surface of the water layer after the weed grows out.
Description
Technical Field
The invention relates to the technical field of rice planting, in particular to a weeding slow-release agent for rice and a using method thereof.
Background
The rice is one of three major food crops, is staple food of about 65 percent of population, has a perennial planting area of about 3000 ten thousand hm2, and plays an important role in food production. The rice cultivation mode is evolved for thousands of years and is changed from direct seeding to transplanting and then to the coexistence of direct seeding and transplanting. In recent years, with the promotion of urbanization construction, a great amount of rural labor force is output to industry and cities, and the mechanization of rice production tends to be great. The mechanical transplanting has economic and social benefits of saving rice seedling beds, high and stable yield, cost saving, labor saving and the like, and the planting level is stably improved.
Weeds are a serious problem that endangers rice production, and direct and indirect grain losses caused by weeds every year reach billions of kilograms. The machine-transplanted seedling is generally transplanted by adopting wide and narrow rows of medium and small seedlings, the row spacing is large, the exposed area of the soil surface is large, and the time required from transplanting to closing the rows is relatively long. The seedlings are generally in the weaning period when being transplanted, the leaf age is 3.5-4.0, and the seedlings are easy to be seriously damaged due to mechanical reasons such as cutting, pulling and the like when being transplanted by a machine. The stress resistance of the seedlings is poorer than that of the conventional manual seedling transplanting, so that the seedling green returning time is longer than that of the manual seedling transplanting. Because the rice machine transplanted plant is weak, the plant injury is large, the row closing is slow, and the dry-wet alternate water layer management after the planting is favorable for the harm of various weed populations.
Bensulfuron-methyl is a selective systemic herbicide. The pesticide can diffuse in water rapidly, and can be absorbed by weed root and leaf and transferred to other parts to inhibit branched chain amino acid biosynthesis. The growth function of the sensitive weeds is hindered, young tissues are yellowed early, and the growth of leaves and roots is inhibited. Can effectively prevent and control 1-year and perennial broadleaf weeds and nutgrass flatsedge in the rice field, and can be absorbed by the roots and leaves of the weeds and transferred to other parts. Is safe to rice and has flexible use method. Quinclorac is a hormone-type quinoline carboxylic acid herbicide. Molecular formula C10H5Cl2NO 2. Is a colorless crystal having a melting point of 274 ℃, a density of 1.75g/cm3 and a vapor pressure of <0.01mPa (20 ℃). Solubility (20 ℃ C.) 0.065mg/kg (pH 7), acetone 2mg/kg, ethanol 2mg/kg, diethyl ether 1mg/kg, ethyl acetate 1 mg/kg. Is difficult to dissolve in toluene, acetonitrile, n-octanol, dichloromethane and n-hexane. The quinclorac is a specific selective herbicide for preventing and killing barnyard grass in a rice field, belongs to hormone-type quinoline carboxylic acid herbicides, has similar weed poisoning symptoms to auxin effects, is mainly used for preventing and treating the barnyard grass, and has long application period and effective leaf period of 1-7. The rice has good safety. The bicyclosulfuron-methyl is a broad-spectrum selective herbicide for preventing and killing weeds in direct seeding fields and transplanting fields of paddy rice. Absorbed through the roots and base of the stems of the weeds and transmitted to the whole plant. Mainly prevents and removes annual and perennial weeds such as bamboo grass, sedge, barnyard grass, pseudorice, moleplant seed, monochoria vaginalis, eyeweed, firefly iris and the like.
Disclosure of Invention
In order to overcome at least part of defects in the prior art, the embodiment of the invention provides a weeding slow-release agent for rice and a using method thereof.
The invention relates to a weeding slow-release agent for rice, which comprises an inner layer of herbicide composition and an outer layer of organic polymer material with slow-release performance, wherein the herbicide composition comprises 0.1-25% of active ingredients by total weight, 0-70% of auxiliary agents by total weight of the herbicide composition, and the balance of filler, the active ingredients comprise bensulfuron-methyl, quinclorac and benzobicyclon, and the mass ratio of the bensulfuron-methyl to the quinclorac to the benzobicyclon is 1:5: 7.
Furthermore, the dosage form of the herbicide composition is granules, the effective component accounts for 0.5-5.5% of the total weight of the herbicide composition, and the auxiliary agent accounts for 5-25% of the total weight of the herbicide composition.
Further, the auxiliary agent comprises 0.1-0.6% of emulsifier, 0.1-0.5% of dispersant, 0.2-0.6% of stabilizer and 0.1-24% of dispersion medium, wherein the emulsifier is 1601#, the dispersant is 601P, the stabilizer is isopropyl phosphate, and the dispersion medium is waste brick residue or attapulgite.
Further, the auxiliary agent is one or more of cyclodextrin, sucrose, chitosan, sodium carboxymethylcellulose, xanthan gum, polyvinylpyrrolidone, polyethylene glycol, soluble starch, gum arabic, soybean protein, casein glue, bone glue and gelatin.
Further, the filler is one or more of magnesium sulfate, ammonium sulfate, potassium dihydrogen phosphate, diatomite, kaolin, attapulgite and clay.
Further, an adsorption granulation method is adopted, and the method specifically comprises the following steps:
(1) weighing bensulfuron-methyl, quinclorac, bicyclosulfuron-ne, an emulsifier, a dispersant, a stabilizer and a dispersion medium in proportion, shearing in a shearing kettle for 50-80 min, and continuously sanding in a series horizontal sand mill until the particle size D50 is less than 5 mu m to obtain a dispersible oil suspending agent;
(2) in the process of continuously stirring the filler, uniformly spraying the dispersible oil suspending agent prepared in the step (1) on the filler in a spraying mode, and completely absorbing the dispersible oil suspending agent through the filler to obtain the herbicide composition granules;
(3) and (3) coating the herbicide composition granules prepared in the step (2) in an organic polymer material to obtain the herbicide slow-release agent for rice.
Further, an extrusion granulation method is adopted, and the method specifically comprises the following steps:
(1) uniformly mixing bensulfuron-methyl, quinclorac, benzobicylon, an auxiliary agent and a filler in proportion, continuing to stir the mixture, spraying water accounting for 5 percent of the total weight of the herbicide composition onto the mixture in a spraying mode in the stirring process, and kneading the mixture when the mixture just can be agglomerated;
(2) uniformly feeding the kneaded material prepared in the step (1) into a granulator for granulation to prepare cylindrical particles with the diameter of more than or equal to 6mm, and then drying the cylindrical particles at the temperature of below 60 ℃ until the moisture content is less than 0.1% to obtain the herbicide composition granules;
(3) and (3) coating the herbicide composition granules prepared in the step (2) in an organic polymer material to obtain the herbicide slow-release agent for rice.
The invention also provides a use method of the herbicide slow-release agent for rice, which is used for the herbicide slow-release agent and comprises the following steps:
(1) before transplanting rice seedlings, land preparation, refinement, flattening and base fertilizer application are carried out on the field;
(2) transplanting seedlings, and simultaneously or on the same day, uniformly spraying the weeding slow-release agent for the rice in the field, only irrigating but not draining in the field within 10 days, and keeping 3-5cm water layer coverage;
(3) dissolving the rice by using the weeding slow-release agent, starting releasing after 3-5 days, observing the emergence condition of weeds in the field and the growth condition of the rice in time, if the base number of the weeds in the field is small, only once applying the herbicide when the water layer is well managed, and formulating measures of weed stem and leaf spray prevention and rice fertilizer application according to the emergence condition of the weeds in the later stage.
Furthermore, the spreading mode is manual spreading or mechanical spreading, so that the rice herbicide slow-release agent is spread on the surface layer of the soil, the spreading speed is ensured, and the dosage deviation per mu is ensured to be less than 10%; if mechanical broadcasting is adopted, the herbicide slow-release agent for the rice is applied on the same day of rice transplanting or at the same time of rice transplanting, and the herbicide slow-release agent for the rice is applied in one step during rice transplanting and rice transplanting, so that the application of the herbicide slow-release agent on the same day is realized, and the rice transplanting production efficiency of a rice machine is improved.
The invention has the advantages that: 1. the herbicide slow-release agent for rice provided by the invention combines the characteristics of weeds and seedlings in the seedling field, and the enclosed herbicide is used to ensure a water layer of 3-5cm, so that the herbicide slow-release agent for rice can be fully dissolved, on one hand, the enclosed herbicide can form a drug film in the seedling field, and the drug film on the surface of the water layer can be killed when the weeds touch the drug film in the seedling emergence peak period within 10 days after the seedlings are transplanted.
2. The weeding slow-release agent for rice provided by the invention adopts the combination of three effective components, the weeding spectrum is expanded, various weed problems can be solved by using the weeding slow-release agent once, and the defects and limitations of single-agent use are overcome.
3. The weeding sustained-release agent for rice provided by the invention overcomes the defect that resistance is easy to generate after long-term single use, prolongs the service life of the agent, has important significance for comprehensive treatment of weed resistance, improves the safety to crops and improves the yield of the crops.
In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Detailed Description
The following will clearly and completely describe the technical solutions in the implementation of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The herbicide slow-release agent for rice comprises an inner-layer herbicide composition and an outer-layer organic polymer material with slow-release performance, wherein the herbicide composition comprises 0.1-25% of active ingredients by total weight, 0-70% of auxiliary agents by total weight of the herbicide composition and the balance of fillers, the active ingredients comprise bensulfuron-methyl, quinclorac and benzobicyclon, and the mass ratio of the bensulfuron-methyl to the quinclorac to the benzobicyclon is 1:5: 7.
In the above embodiments, the dosage form of the herbicide composition is granules, the active ingredient accounts for 0.5-5.5% of the total weight of the herbicide composition, and the adjuvant accounts for 5-25% of the total weight of the herbicide composition.
In the above embodiment, the auxiliary agent includes 0.1% to 0.6% of an emulsifier, 0.1% to 0.5% of a dispersant, 0.2% to 0.6% of a stabilizer, and 0.1% to 24% of a dispersion medium, the emulsifier is 1601#, the dispersant is 601P, the stabilizer is isopropyl phosphate, and the dispersion medium is waste brick residue or attapulgite.
In the above embodiments, the auxiliary agent is one or more of cyclodextrin, sucrose, chitosan, sodium carboxymethylcellulose, xanthan gum, polyvinylpyrrolidone, polyethylene glycol, soluble starch, gum arabic, soy protein, casein gum, bone glue, and gelatin.
In the above embodiments, the filler is one or more of magnesium sulfate, ammonium sulfate, potassium dihydrogen phosphate, diatomite, kaolin, attapulgite and clay.
In the above embodiment, an adsorption granulation method is adopted, which specifically includes the following steps:
(1) weighing bensulfuron-methyl, quinclorac, bicyclosulfuron-ne, an emulsifier, a dispersant, a stabilizer and a dispersion medium in proportion, shearing in a shearing kettle for 50-80 min, and continuously sanding in a series horizontal sand mill until the particle size D50 is less than 5 mu m to obtain a dispersible oil suspending agent;
(2) in the process of continuously stirring the filler, uniformly spraying the dispersible oil suspending agent prepared in the step (1) on the filler in a spraying mode, and completely absorbing the dispersible oil suspending agent through the filler to obtain the herbicide composition granules;
(3) and (3) coating the herbicide composition granules prepared in the step (2) in an organic polymer material to obtain the herbicide slow-release agent for rice.
In the above embodiment, an extrusion granulation method is adopted, which specifically includes the following steps:
(1) uniformly mixing bensulfuron-methyl, quinclorac, benzobicylon, an auxiliary agent and a filler in proportion, continuing to stir the mixture, spraying water accounting for 5 percent of the total weight of the herbicide composition onto the mixture in a spraying mode in the stirring process, and kneading the mixture when the mixture just can be agglomerated;
(2) uniformly feeding the kneaded material prepared in the step (1) into a granulator for granulation to prepare cylindrical particles with the diameter of more than or equal to 6mm, and then drying the cylindrical particles at the temperature of below 60 ℃ until the moisture content is less than 0.1% to obtain the herbicide composition granules;
(3) and (3) coating the herbicide composition granules prepared in the step (2) in an organic polymer material to obtain the herbicide slow-release agent for rice.
The invention also provides a use method of the herbicide slow-release agent for rice, which is used for the herbicide slow-release agent and comprises the following steps:
(1) before transplanting rice seedlings, land preparation, refinement, flattening and base fertilizer application are carried out on the field;
(2) transplanting seedlings, and simultaneously or on the same day, uniformly spraying the weeding slow-release agent for the rice in the field, only irrigating but not draining in the field within 10 days, and keeping 3-5cm water layer coverage;
(3) dissolving the rice by using the weeding slow-release agent, starting releasing after 3-5 days, observing the emergence condition of weeds in the field and the growth condition of the rice in time, if the base number of the weeds in the field is small, only once applying the herbicide when the water layer is well managed, and formulating measures of weed stem and leaf spray prevention and rice fertilizer application according to the emergence condition of the weeds in the later stage.
In the embodiment, the spreading mode is manual spreading or mechanical spreading, the rice herbicide slow-release agent is guaranteed to be spread on the surface layer of the soil, the spreading speed is guaranteed, and the drug dosage deviation per mu is guaranteed to be less than 10%; if mechanical broadcasting is adopted, the herbicide slow-release agent for the rice is applied on the same day of rice transplanting or at the same time of rice transplanting, and rice transplanting, compound fertilizer and closed herbicide are put in place in one step, so that the application on the same day is realized, and the rice transplanting production efficiency of a rice machine is improved.
Examples of the embodiments
1. Selection of materials
Medicament and apparatus: bensulfuron-methyl, quinclorac, benzobicylon and a balance.
Preparation of the herbicide sustained-release agent for rice: the herbicide is prepared by taking bensulfuron-methyl, quinclorac and benzobicylon as cores and wrapping a layer of high polymer material with slow release performance on the outer layer, and the finally formed herbicide slow release agent for rice is spherical or ellipsoidal; the diameter is 5-8 mm; the content of the effective components is 0.5-5.5%, the content of the effective components is respectively selected to be 0.5%, 2.0%, 3.0%, 4.0% and 5.5%, and A, B, C, D, E granules with five different formulas are prepared for standby.
2. Test area
The method is tested in a paddy field crop breeding area of a south China Hainan breeding base, the test field is a conventional single-season or double-season rice continuous cropping field, the previous crop of the test is a winter-idle field, soil is cohesive loam, and fertility is medium. After the test field is ploughed, prepared and raked, the longitudinal ridge soil is firstly spaced, then the rice transplanter transplants rice between ridges, the row spacing of the transplanted plants is 30 x 16cm, after the rice transplantation is finished, the plastic partition plates are used for transverse spacing to form 20cm2The block of (1). Drainage ditches are reserved at the row edges of each longitudinal ridge, and the single-row single tanks are arranged in blocks, so that water and pesticide channeling is avoided. The block arrangement and the application of the herbicide slow-release agent for the rice are completed in the transplanting day of the transplanting machine.
3. Test treatment
The field pesticide effect determination of the herbicide sustained-release agents for the paddy rice with different formulas is carried out by setting 6 herbicide treatments, wherein the herbicide sustained-release agents for 5 different paddy rice comprise herbicide sustained-release agents for 5 different paddy rice according to the dosage of 450g (a.i)/hm2, namely the dosage of the herbicide sustained-release agent for the paddy rice is 180kg/hm2On the day of transplanting by machine, the herbicide oxadiazon EC is applied by conventional sealing of the rice field by machine transplanting according to the recommended dose of 450g (a.i)/hm2And the contrast agent is applied 5 days after the machine transplanting.
4. Sampling investigation
The 4-point diagonal sampling is adopted during the weed control effect investigation, and the sampling area of each sampling point is 0.5m multiplied by 0.5 m. Investigating the number of weed plants in unit area on the 15 th day after application, and calculating the control effect of the plants; on day 30, the number of weed plants in unit area was investigated, and the control effect of the plants was calculated.
The control effect of the plants is (number of plants in unit area of blank control block-number of plants in unit area of application block)/number of plants in unit area of blank control block multiplied by 100 percent, and the control effects of the cyperus, the barnyard grass and the moleplant seed are respectively calculated.
5. Analysis of results
The rice safety and the field weed control effect of different slow-release granules are achieved.
After the herbicide is applied, field observation is continuously carried out, the rice herbicide slow-release agent is not immediately disintegrated after being spread in the field, the rice herbicide slow-release agent A, B, C, D, E is swelled and dissolved 5 days after the herbicide is applied, and an obvious pesticide film can be observed on a field water layer after the rice herbicide slow-release agent is dissolved.
The results of the sampling investigation are shown in the following table:
as can be seen from the above table, compared with the closed weeding mode in the prior art, the weeding composition provided by the invention, which adopts bensulfuron-methyl, quinclorac and benzobicylon as effective components, can obviously improve the killing efficiency of the weeds such as cyperus, barnyard grass and moleplant seed, reduce the weeds in the rice field, and provide effective guarantee for the normal growth of seedlings, thereby improving the yield of rice.
After the weeding sustained-release agents 15D and 30D for rice are applied, the weeding sustained-release agents can still effectively kill the cyperus, the barnyard grass, the moleplant seeds and other weeds, can kill the cyperus, the barnyard grass, the moleplant seeds and other weeds in a rice field for a long time, and overcome the defects that the weeding agent oxadiazon in the prior art can not thoroughly kill the cyperus, the barnyard grass, the moleplant seeds and other weeds, the killing effect can be quickly reduced, and seedlings can not be effectively protected.
When the proportion of bensulfuron methyl, quinclorac and benzobicylon in the herbicide slow-release agent for rice is 3.0 percent, the comprehensive killing effect is the best when the weeds such as cyperus, barnyard grass, moleplant seed and the like are killed. Especially in the aspect of continuous killing, the long-acting killing can be carried out on the weeds such as cyperus, barnyard grass, moleplant seeds and the like in the rice field.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A slow-release herbicide for rice, which comprises an inner herbicide composition and an outer organic polymer material with slow-release performance, and is characterized in that: the herbicide composition comprises 0.1-25% of effective components, 0-70% of auxiliary agents and the balance of fillers, wherein the effective components comprise bensulfuron-methyl, quinclorac and benzobicyclon, and the mass ratio of the bensulfuron-methyl to the quinclorac to the benzobicyclon is 1:5: 7.
2. The herbicide sustained-release formulation for rice as claimed in claim 1, wherein: the dosage form of the herbicide composition is granules, the effective component accounts for 0.5-5.5% of the total weight of the herbicide composition, and the auxiliary agent accounts for 5-25% of the total weight of the herbicide composition.
3. The herbicide sustained-release formulation for rice as claimed in claim 1, wherein: the auxiliary agent comprises 0.1-0.6% of emulsifier, 0.1-0.5% of dispersant, 0.2-0.6% of stabilizer and 0.1-24% of dispersion medium, wherein the emulsifier is 1601#, the dispersant is 601P, the stabilizer is isopropyl phosphate, and the dispersion medium is waste brick residue or attapulgite.
4. The herbicide sustained-release formulation for rice as claimed in claim 1, wherein: the auxiliary agent is one or more of cyclodextrin, sucrose, chitosan, sodium carboxymethylcellulose, xanthan gum, polyvinylpyrrolidone, polyethylene glycol, soluble starch, gum arabic, soybean protein, casein gum, bone glue, and gelatin.
5. The herbicide sustained-release formulation for rice as claimed in claim 1, wherein: the filler is one or more of magnesium sulfate, ammonium sulfate, monopotassium phosphate, diatomite, kaolin, attapulgite and clay.
6. The herbicide release agent for rice as claimed in any one of claims 1 to 5, wherein: an adsorption granulation method is adopted, and the method specifically comprises the following steps:
(1) weighing bensulfuron-methyl, quinclorac, bicyclosulfuron-ne, an emulsifier, a dispersant, a stabilizer and a dispersion medium in proportion, shearing in a shearing kettle for 50-80 min, and continuously sanding in a series horizontal sand mill until the particle size D50 is less than 5 mu m to obtain a dispersible oil suspending agent;
(2) in the process of continuously stirring the filler, uniformly spraying the dispersible oil suspending agent prepared in the step (1) on the filler in a spraying mode, and completely absorbing the dispersible oil suspending agent through the filler to obtain the herbicide composition granules;
(3) and (3) coating the herbicide composition granules prepared in the step (2) in an organic polymer material to obtain the herbicide slow-release agent for rice.
7. The herbicide release agent for rice as claimed in any one of claims 1 to 5, wherein: the method is characterized in that: an extrusion granulation method is adopted, and the method specifically comprises the following steps:
(1) uniformly mixing bensulfuron-methyl, quinclorac, benzobicylon, an auxiliary agent and a filler in proportion, continuing to stir the mixture, spraying water accounting for 5 percent of the total weight of the herbicide composition onto the mixture in a spraying mode in the stirring process, and kneading the mixture when the mixture just can be agglomerated;
(2) uniformly feeding the kneaded material prepared in the step (1) into a granulator for granulation to prepare cylindrical particles with the diameter of more than or equal to 6mm, and then drying the cylindrical particles at the temperature of below 60 ℃ until the moisture content is less than 0.1% to obtain the herbicide composition granules;
(3) and (3) coating the herbicide composition granules prepared in the step (2) in an organic polymer material to obtain the herbicide slow-release agent for rice.
8. A method of using a rice herbicide sustained-release agent for the rice herbicide sustained-release agent according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
(1) before transplanting rice seedlings, land preparation, refinement, flattening and base fertilizer application are carried out on the field;
(2) transplanting seedlings, and simultaneously or on the same day, uniformly spraying the weeding slow-release agent for the rice in the field, only irrigating but not draining in the field within 10 days, and keeping 3-5cm water layer coverage;
(3) dissolving the rice by using the weeding slow-release agent, starting releasing after 3-5 days, observing the emergence condition of weeds in the field and the growth condition of the rice in time, if the base number of the weeds in the field is small, only once applying the herbicide when the water layer is well managed, and formulating measures of weed stem and leaf spray prevention and rice fertilizer application according to the emergence condition of the weeds in the later stage.
9. The method of using a slow-release herbicide for rice as claimed in claim 8, wherein: the spreading mode is manual spreading or mechanical spreading, the rice herbicide slow-release agent is guaranteed to be spread on the surface layer of the soil, the spreading speed is guaranteed, and the pesticide dosage deviation per mu is guaranteed to be less than 10%; if mechanical broadcasting is adopted, the herbicide slow-release agent for the rice is applied on the same day of rice transplanting or at the same time of rice transplanting, and the herbicide slow-release agent for the rice is applied in one step during rice transplanting and rice transplanting, so that the application of the herbicide slow-release agent on the same day is realized, and the rice transplanting production efficiency of a rice machine is improved.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068036A (en) * | 2014-07-09 | 2014-10-01 | 江苏省苏科农化有限责任公司 | Closed weeding method for machine transplanting rice field |
| CN105284854A (en) * | 2015-11-30 | 2016-02-03 | 山东兴禾作物科学技术有限公司 | Herbicide composition targeting paddy field scirpus tabernaemontani and preparation method of herbicide composition |
| CN110301452A (en) * | 2019-06-28 | 2019-10-08 | 淮安市植保植检站 | Rice mechanical transplanting rice seedling bed broadcast application disposably closes herbicide and method |
| CN111083978A (en) * | 2019-12-31 | 2020-05-01 | 中国水稻研究所 | Application of closed herbicide-compound fertilizer sustained-release granules in rice transplanting field |
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2021
- 2021-04-20 CN CN202110426671.4A patent/CN113180038A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068036A (en) * | 2014-07-09 | 2014-10-01 | 江苏省苏科农化有限责任公司 | Closed weeding method for machine transplanting rice field |
| CN105284854A (en) * | 2015-11-30 | 2016-02-03 | 山东兴禾作物科学技术有限公司 | Herbicide composition targeting paddy field scirpus tabernaemontani and preparation method of herbicide composition |
| CN110301452A (en) * | 2019-06-28 | 2019-10-08 | 淮安市植保植检站 | Rice mechanical transplanting rice seedling bed broadcast application disposably closes herbicide and method |
| CN111083978A (en) * | 2019-12-31 | 2020-05-01 | 中国水稻研究所 | Application of closed herbicide-compound fertilizer sustained-release granules in rice transplanting field |
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