Herbicidal compositions and herbicides containing metal ion complexes

Abstract

The present application provides a kind of herbicidal composition containing metal ion complex, comprising herbicidal active ingredient A and metal ion chelate;The herbicidal active ingredient A of the application is one or a combination of several of glufosinate-ammonium, glufosinate-ammonium salt, glufosinate-P and glufosinate-P salt;The metal ion chelate is one or a combination of several of o-phenanthroline, ethylenediaminetetraacetic acid, dithiotriazapentacarboxylic acid, ethylene glycol diethyl ether diamine tetraacetic acid, 2.2'-dipyridyl, nitrilotriacetic acid, citrate, tartrate, oxalate, pyrophosphate.The herbicidal composition of the present application not only can improve the efficacy of glufosinate-ammonium in cloudy and drought conditions, but also can reduce the use amount of glufosinate-ammonium, reduce environmental pressure, and is more environmentally friendly.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of pesticides, and particularly relates to a herbicidal composition and herbicide containing a metal ion complex. BACKGROUND

[0002] Glufosinate-ammonium is a non-selective herbicide, which inhibits the activity of glutamine synthetase in plants, leading to the accumulation of ammonium ions, the disorder of nitrogen metabolism, and the death of plants. Glufosinate-ammonium has chirality, and the commonly produced is the racemate of L-type and D-type. Subsequent studies have found that L-glufosinate-ammonium has herbicidal effect, while D-glufosinate-ammonium has no herbicidal activity, and L-glufosinate-ammonium is called glufosinate-ammonium. Glufosinate-ammonium has the characteristics of wide weed spectrum, high activity, low toxicity, easy degradation in soil, safety to crops, small drift, good environmental compatibility, and rapid killing of weeds. It can prevent and rapidly kill more than 100 kinds of annual and perennial broadleaf weeds and grass weeds such as crabgrass and ryegrass. With the popularization and application of glufosinate-ammonium transgenic technology, glufosinate-ammonium has become the second largest transgenic crop herbicide in the world.

[0003] Although glufosinate-ammonium has the above advantages and has become the second largest non-selective herbicide after glyphosate, it still has many problems in use. For example, the efficacy of glufosinate-ammonium is easily affected by external factors, and inappropriate temperature, humidity and light will reduce its herbicidal activity, resulting in a significant reduction in the herbicidal effect of glufosinate-ammonium in some special environments. At low temperature, the ability of glufosinate-ammonium to pass through the cuticle and cell membrane is reduced, thereby affecting the herbicidal effect of glufosinate-ammonium. It is generally recommended to use glufosinate-ammonium at a temperature above 15℃. When the climate is dry, plants close the stomata, the leaves curl, and the leaf skin thickens to reduce transpiration, which is not conducive to the absorption of glufosinate-ammonium and affects the efficacy. Therefore, the use of glufosinate-ammonium is limited in the northern winter, early spring and dry season, and even if it is used, a larger dose is required, which not only increases the cost of using the drug, but also easily leads to the development of herbicide resistance.

[0004] In summary, it is of great significance to study a herbicidal composition that can exert better herbicidal effect in overcast and dry conditions. SUMMARY

[0005] In order to overcome the problem that the herbicidal effect of glufosinate-ammonium is easily affected by environmental factors such as overcast and dry conditions in the prior art, a herbicidal composition and herbicide containing a metal ion complex are provided, which not only can improve the herbicidal effect of glufosinate-ammonium in overcast and dry conditions, but also can reduce the use amount of glufosinate-ammonium, reduce environmental pressure, and be more environmentally friendly.

[0006] The basic idea of the technical solution of the present application is as follows:

[0007] A herbicidal composition containing a metal ion complex, comprising a herbicidal active ingredient A and a metal ion chelate;

[0008] The herbicidal active ingredient A is one or a combination of glufosinate, glufosinate salts, glufosinate-P, and glufosinate-P salts;

[0009] The metal ion chelate is one or a combination of o-phenanthroline, ethylenediaminetetraacetic acid, dithiotriazapentacetic acid, ethyleneglycol-bis-ethyl-ether-diaminetetraacetic acid, 2.2'-bipyridine, nitrilotriacetic acid, citrate, tartrate, oxalate, pyrophosphate.

[0010] As one way, the metal ion chelate is o-phenanthroline, 2.2'-bipyridine, or sodium pyrophosphate, preferably o-phenanthroline.

[0011] As one way, the mass ratio of the herbicidal active ingredient A and the metal ion chelate is (0.75-48):1, preferably (1.875-6):1, and more preferably 6:1.

[0012] As one way, the herbicidal active ingredient B is one or a combination of triketones, pyrazoles, pyridines, sulfonylureas, sulfonamides, pyrimidinyl-salicylic acids, imidazolinones, aryloxyphenoxypropionates, phenoxy carboxylic acids, triazines, amides, dinitroanilines, cyclohexenones, ureas, diphenyl ethers, cyclic imides, carbamates, organophosphates, bipyridylium herbicides.

[0013] As one way, the mass ratio of the herbicidal active ingredient A, the herbicidal active ingredient B, and the metal ion chelate is (0.75-60):(0.025-0.9):1.

[0014] As one way, the herbicidal active ingredient A is glufosinate, the herbicidal active ingredient B is benzobac, and the metal ion chelate is o-phenanthroline, the mass ratio of the herbicidal active ingredient A, the herbicidal active ingredient B, and the metal ion chelate is (1.875-6):(0.075-0.5):1.

[0015] As one way, the herbicidal active ingredient A is glufosinate, the herbicidal active ingredient B is flumipropyn, and the metal ion chelate is 2.2'-bipyridine, the mass ratio of the herbicidal active ingredient A, the herbicidal active ingredient B, and the metal ion chelate is (1.5-24):(0.025-1):1, preferably 6:0.25:1.

[0016] As one way, the herbicidal active ingredient A is glufosinate, the herbicidal active ingredient B is difenoxuron, and the metal ion chelate is sodium pyrophosphate, the mass ratio of the herbicidal active ingredient A, the herbicidal active ingredient B, and the metal ion chelate is (1.875-30):(0.03125-2):1, preferably 1.875:0.5:1.

[0017] The present application provides a glufosinate herbicide, comprising the metal ion complex-containing herbicidal composition and an adjuvant according to any one of the above.

[0018] As a mode, the content of the metal ion complex-containing herbicidal composition is 1% to 90% by mass, preferably 5% to 90%.

[0019] Optionally, the adjuvant is a combination of one or more of a surfactant, a solvent, a filler, a thickening agent, an antifoaming agent, and an antifreeze agent.

[0020] Optionally, the surfactant is selected from one or a combination of nonylphenol polyoxyethylene ether, long-chain quaternary ammonium salt, N-alkyl betaine, alkyl glucoside, fatty alcohol polyoxyethylene ether, sodium fatty alcohol polyoxyethylene ether sulfate, or tallow amine.

[0021] Optionally, the solvent is one or a combination of solvent oil, methyl oleate, cyclohexanone, sunflower amide, or N,N-dimethylformamide.

[0022] Optionally, the filler is one or a combination of kaolin, diatomite, and ammonium sulfate.

[0023] Optionally, the thickening agent is one or both of xanthan gum and gum arabic.

[0024] Optionally, the antifoaming agent is one or a combination of silicone antifoaming agent, polyether antifoaming agent, and polyether-modified silicone antifoaming agent.

[0025] Optionally, the antifreeze agent is one or a combination of polyethylene glycol, urea, and propylene glycol methyl ether.

[0026] Optionally, the dosage form is soluble liquid, water emulsion, wettable powder, soluble powder, soluble granule, water dispersible granule, water suspension, oil suspension, microcapsule suspension, tablet, or effervescent granule.

[0027] Compared with the prior art, the present application has the following advantages:

[0028] (1) The herbicidal composition of the present application is sprayed on the leaves of weeds after dilution, and part of the liquid medicine falls into the soil. The metal chelate contained therein forms a stable complex with trace elements such as iron, zinc, and copper in the soil, which is more easily absorbed by weeds, thereby improving the respiration and photosynthesis of weeds. The enhanced photosynthesis promotes the opening of more stomata to absorb carbon dioxide in the air, which in turn promotes the absorption of glufosinate by weeds, thereby improving the efficacy of glufosinate under drought conditions.

[0029] (2) The herbicidal composition of the present application improves the herbicidal activity of glufosinate-ammonium under overcast weather and drought to 2 times or more of the prior art, and can prolong the drug retention period to 6-8 weeks.

[0030] (3) The herbicidal composition of the present application reduces the amount of pesticide compared with the conventional single agent, and can achieve the same or better herbicidal effect under the condition of reducing the amount of pesticide by 50%, which is convenient to use and can reduce the cost of pesticide for farmers.

[0031] (4) The herbicidal composition of the present application has a wide weed spectrum, and can effectively prevent and control grass weeds, broadleaf weeds and sedge weeds, such as Eupatorium adenophorum, Digitaria sanguinalis, Echinochloa crus-galli, Conyza canadensis, Sonchus oleraceus, Acalypha australis, Commelina communis, Amaranthus retroflexus, Alternanthera philoxeroides, Cyperus difformis, Rhizoma zedoariae and Tridax procumbens. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Glufosinate-ammonium is a racemate of L-type and D-type glufosinate-ammonium, and each of L-type and D-type accounts for 50%. L-type and D-type glufosinate-ammonium are both shown as the content of glufosinate-ammonium in analysis, for example, 45% of D-type glufosinate-ammonium in 90% of glufosinate-ammonium does not play a drug effect, and glufosinate-ammonium is all L-type glufosinate-ammonium playing a drug effect, therefore, the drug effect of glufosinate-ammonium is twice that of glufosinate-ammonium at the same amount. The following formulation optimization test provides the content of glufosinate-ammonium as an example, and the actual obtained optimization formulation range is also applicable to glufosinate-ammonium.

[0034] Herbicidal composition

[0035] Several example formulations of the herbicidal composition suitable for overcast weather and drought environment are provided (see Tables 1-3), and joint toxicity tests are carried out.

[0036] (1) Test purpose

[0037] The inhibition effects of the compositions obtained according to different mixing ratios of glufosinate-ammonium + benzobicyclon + o-phenylphenol, glufosinate-ammonium + haloxyfop + 2.2'-dipyridyl, and glufosinate-ammonium + difenacyl + sodium pyrophosphate on Eupatorium adenophorum were determined under greenhouse potting conditions, and the joint action was evaluated. The related results are shown in Tables 1-3.

[0038] (2) Test method

[0039] With the Eupatorium odoratum, Potentilla chrysotricha, Cyperus rotundus as the research object, the diameter of 7 / 9 cm plastic flowerpot is filled with air-dried fine soil to the pot 4 / 5, the plastic flowerpot is placed in the plastic turnover box with water, the soil is completely wetted through the bottom of the seepage irrigation, 20 seeds are uniformly sowed in each pot, the stem and leaf treatment is carried out by using the spray tower when the weeds grow to 2-3 leaf stage, each treatment is repeated 4 times, and the blank control is set. After the drug solution is dried, the test materials are placed in the greenhouse for culture, the greenhouse simulates overcast, drought environment, the soil moisture content is kept below 15%, the light / dark is 14h / 10h, the light intensity is 800LUX, the temperature is set to the minimum 20℃ and the maximum 25℃. The injury of weeds is observed 20 days after the treatment, the fresh weight of the aboveground part is weighed, and the inhibition rate of the target weeds is used to evaluate the toxicity of the herbicide to weeds.

[0040] The binary compound joint action evaluation method refers to the Gowing method in the joint action determination of mixed compounds in the indoor biological determination guidelines of pesticides.

[0041] Fresh weight inhibition rate %=(blank control fresh weight-treatment fresh weight) / blank control fresh weight*100

[0042] E0=X+Y-XY / 100

[0043] In the above formula, X represents the weed control effect of glufosinate ammonium when the dosage is P; Y represents the weed control effect of metal ion chelate when the dosage is Q; E0 represents the theoretical control effect of the herbicide combination when the herbicide dosage is (P+Q). According to the Gowing method, when E-E0>10%, it indicates that the mixed herbicide has a synergistic effect; when E-E0<-10%, it indicates that the mixed herbicide has an antagonistic effect; when the E-E0 value is between ±10%, it indicates that the mixed herbicide has an additive effect, and E in the formula represents the measured control effect % of each treatment.

[0044] The ternary compound joint action evaluation method refers to the Golby method in the joint action determination of mixed compounds in the indoor biological determination guidelines of pesticides.

[0045] Fresh weight inhibition rate %=(blank control fresh weight-treatment fresh weight) / blank control fresh weight*100

[0046] E0=XYZ / 10000

[0047] In the above formula, E0 is the theoretical fresh weight survival rate of the herbicide agent combination, X represents the measured fresh weight survival rate of glufosinate-ammonium when the amount is P, Y represents the measured fresh weight survival rate of herbicide B when the amount is Q, Z represents the measured fresh weight survival rate of the metal ion chelate when the amount is W, E0 is the theoretical weed survival rate of the herbicide combination when the amount is (P+Q+W), and E is the actual weed survival rate of each treatment. According to the Golby method, when E0-E>10%, it is considered to be a synergistic effect, when -10

[0048] Table 1 results of joint toxicity determination of glufosinate-ammonium + o-phenanthroline on Eupatorium adenosum

[0049]

[0050]

[0051] The results in Table 1 show that the herbicidal composition of the present application has a synergistic effect on Eupatorium adenosum when the mass ratio of glufosinate-ammonium: o-phenanthroline is in the range of (0.75-48):1, and the effect is relatively better when the mass ratio is (1.875-6):1, and is most obvious when the mass ratio is 6:1.

[0052] Table 2 results of joint toxicity determination of glufosinate-ammonium + carfentrazone-ethyl + o-phenanthroline on Eupatorium adenosum

[0053]

[0054]

[0055] The results in Table 2 show that the herbicidal composition of the present application has a synergistic effect on Eupatorium adenosum when the mass ratio of glufosinate-ammonium: carfentrazone-ethyl: o-phenanthroline is in the range of (0.75-60):(0.025-0.9):1, and the effect is better when the mass ratio is (1.875-6):(0.075-0.5):1, and is most obvious when the mass ratio is 3:0.075:1.

[0056] Table 3 results of joint toxicity determination of glufosinate-ammonium + haloxyfop-P-methyl + 2,2'-dipyridyl on Eupatorium adenosum

[0057]

[0058]

[0059] Table 3 results show that the herbicidal composition of the present application has synergistic effect on E. crus-galli when glufosinate: high-efficiency haloxyfop-R-methyl: 2.2'-dipyridyl is in the range of (1.5-24):(0.025-1):1, especially most obvious at the ratio of 6:0.25:1.

[0060] Table 4 results of joint toxicity determination of glufosinate + difenac- amide + sodium pyrophosphate on E. crus-galli

[0061]

[0062]

[0063] Table 4 results show that the herbicidal composition of the present application has synergistic effect on E. crus-galli when glufosinate: difenac-amide: sodium pyrophosphate is in the range of (1.875-30):(0.03125-2):1, especially most obvious at the ratio of 1.875:0.5:1.

[0064] Herbicide

[0065] The glufosinate herbicide includes a herbicidal composition containing a metal ion complex and an adjuvant.

[0066] The adjuvant is a combination of one or more of a surfactant, a solvent, a carrier or an auxiliary material.

[0067] As an example, the surfactant can be selected from one or any combination of N-carboxyethyl fatty amide salt, perfluoroalkyl carboxylic acid salt, alkyl sulfonic acid salt, fatty alcohol ether sulfate salt, alkyl benzene sulfonic acid salt, fatty acid ethylene sulfonic acid salt, olefin sulfonic acid salt, alkyl phosphate salt, butyl naphthalene sulfonic acid sodium salt, naphthalene sulfonic acid formaldehyde condensate (NNO), fatty alcohol ether phosphate salt, long-chain alkyl amine and its salt, polyoxyethylene etherified long-chain amine and its salt, long-chain quaternary ammonium salt, polyoxyethylene etherified quaternary ammonium salt, N-alkyl-β-aminopropionic acid, N-alkyl aminodipropionic acid, N-alkyl betaine, sulfobetaine, 2-undecyl-N-carboxymethyl-N-hydroxyethyl imidazoline, sucrose ester, fatty acid sorbitan, alkyl polyglucoside, phenyl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether, fatty acid polyoxyethylene ether ester, nonyl phenol polyoxyethylene ether, castor oil polyoxyethylene ether, alkyl phenol formaldehyde resin polyoxyethylene ether, polyethylene glycol oleate, glycerol oleate, polyglycerol oleate, ethoxylated fatty acid sorbitan ester, sorbitan laurate, polyoxyethyl oleate, polytriaolein oleate, triphenyl styryl phenol ethoxylate, oxirane and epoxy benzene alkane block copolymer, EO-PO butyl ether block copolymer, and a bovine tallow amine adjuvant.

[0068] As an example, the solvent is selected from one or more of mineral oil, leaf wax oil, soybean oil, methyl oleate, sunflower amide, benzene, toluene, xylene, solvent oil, N, N-dimethyl formamide, cyclohexanone, ethyl acetate, methanol, ethanol, ethylene glycol, polyethylene glycol, propylene glycol, glycerol, isopropyl alcohol or water.

[0069] As an example, the filler is selected from one or more of clay, diatomite, kaolin, activated white clay, bentonite, talc powder, silicon powder, ammonium sulfate, potassium sulfate, soluble starch, light calcium, white carbon black, attapulgite, sepiolite, montmorillonite, polyvinylpyrrolidone, methyl cellulose, carboxymethyl cellulose, sodium polyacrylate, sodium carboxymethyl cellulose.

[0070] As an example, the thickening agent is selected from xanthan gum, gum arabic, pectin, agar, gelatin, algin, carrageenan, dextrin, polysaccharide derivatives, propylene glycol alginate, sodium starch phosphate, sodium alginate, casein, polyoxyethylene.

[0071] As an example, the antifoaming agent is selected from one or more of silicone antifoaming agent, polyether antifoaming agent, mineral oil antifoaming agent, polyether modified silicone antifoaming agent, new self-emulsifying antifoaming agent, high carbon alcohol antifoaming agent.

[0072] As an example, the antifreeze agent is selected from one or more of urea, methanol, ethanol, ethylene glycol, polyethylene glycol, propylene glycol, glycerol, isopropyl alcohol, propylene glycol methyl ether.

[0073] Example 1

[0074] A herbicide in the form of a soluble liquid is provided, the preparation raw materials including, by mass percentage:

[0075] Picolina 24%, o-phenanthroline 4%, fatty alcohol polyoxyethylene ether sodium sulfate 10%, propylene glycol methyl ether 4%, deionized water to 100%.

[0076] Example 2

[0077] A herbicide in the form of a microemulsion is provided, the preparation raw materials including, by mass percentage:

[0078] Picolina 15%, benzofluor 3%, o-phenanthroline 4%, solvent oil 6%, sulfobetaine 10%, alkyl polyglucoside 5%, polyether antifoaming agent 0.05% and glycerol 4%, deionized water to 100%.

[0079] Example 3

[0080] A herbicide in the form of a water suspension is provided, the preparation raw materials including, by mass percentage:

[0081] Glufosinate-ammonium 24%, Carfentrazone-ethyl 1%, DTPA (Diethylene triamine pentaacetic acid) 8%, Alkyl phosphate ester 3%, Alkyl sulfonate 2%, Silicone antifoam agent 0.05%, Xanthan gum 0.2%, Urea 3%, Deionized water up to 100%.

[0082] Example 4

[0083] A herbicide in the form of dispersible oil suspension is provided, the raw materials for preparation include, by mass percentage:

[0084] Glufosinate-ammonium 10%, Carfentrazone-ethyl 2%, EGTA (Ethyleneglycol-bis(2-aminoethylether)-N,N,N',N'-tetraacetic acid) 6%, Long-chain quaternary ammonium salt 1%, Sulfobetaine 9%, Mineral oil antifoam agent 0.05%, Polyethylene glycol 5%, Gum arabic 0.1%, Methyl oleate up to 100%.

[0085] Example 5

[0086] A herbicide in the form of soluble granule is provided, the raw materials for preparation include, by mass percentage:

[0087] Glufosinate-ammonium 50%, Carfentrazone-ethyl 5%, EDTA (Ethylene diamine tetraacetic acid) 5%, Sodium fatty alcohol ether sulfate 10%, Polyether modified silicone antifoam agent 0.05%, Ammonium sulfate 5%, Diatomite up to 100%.

[0088] Example 6

[0089] A herbicide in the form of microemulsion is provided, the raw materials for preparation include, by mass percentage:

[0090] Glufosinate-ammonium 14%, Haloxyfop-R-methyl 2%, 2,2'-Bipyridine 2%, Cyclohexanone 10%, N-Alkyl aminodipropionic acid 2%, Nonylphenol polyoxyethylene ether 4%, High carbon alcohol antifoam agent 0.05%, Propylene glycol 5%, Deionized water up to 100%.

[0091] Example 7

[0092] A herbicide in the form of dispersible oil suspension is provided, the raw materials for preparation include, by mass percentage:

[0093] Glufosinate-ammonium 15%, Haloxyfop-R-methyl 6%, NTA (Nitrilotriacetic acid) 9%, Sorbitan laurate 3%, Triphenyl ethenyl phenol ethoxylate 1%, Polyether antifoam agent 0.05%, Methyl oleate up to 100%.

[0094] Example 8

[0095] A herbicide in the form of water dispersible granule is provided, the raw materials for preparation include, by mass percentage:

[0096] Glufosinate-ammonium 60%, haloxyfop-R-methyl 6%, sodium citrate 12%, long chain quaternary ammonium salt 5%, polyether antifoam agent 0.05%, kaolin added to 100%.

[0097] Example 9

[0098] A herbicide in the form of a wettable powder is provided, the raw materials for preparation including, by mass percentage:

[0099] Glufosinate-ammonium 45%, haloxyfop-R-methyl 5%, potassium bitartrate 8%, sucrose ester 8%, fatty acid sorbitan 2%, polyether-modified silicone antifoam agent 0.05%, ammonium sulfate 6%, kaolin added to 100%.

[0100] Example 10

[0101] A herbicide in the form of a microemulsion is provided, the raw materials for preparation including, by mass percentage:

[0102] Glufosinate-ammonium 18%, difenacyr 2%, sodium pyrophosphate 5%, sunflower amide 15%, castor oil polyoxyethylene ether 8%, alkyl betaine 4%, mineral oil antifoam agent 0.05%, polyethylene glycol 2%, deionized water added to 100%.

[0103] Example 11

[0104] A herbicide in the form of a water emulsion is provided, the raw materials for preparation including, by mass percentage:

[0105] Glufosinate-ammonium 24%, difenacyr 3%, sodium pyrophosphate 5%, N,N-dimethylformamide 10%, nonylphenol polyoxyethylene ether 5%, tallow amine 5%, silicone antifoam agent 0.05%, ethylene glycol 4%, deionized water added to 100%.

[0106] Example 12

[0107] A herbicide in the form of a water dispersible granule is provided, the raw materials for preparation including, by mass percentage:

[0108] Glufosinate-ammonium 65%, difenacyr 2%, sodium pyrophosphate 12%, fatty acid polyoxyethylene ether 5%, polyether antifoam agent 0.01%, ammonium sulfate added to 100%.

[0109] Example 13

[0110] A herbicide in the form of a soluble granule is provided, the raw materials for preparation including, by mass percentage:

[0111] Glufosinate-ammonium 47%, difenacyr 3%, sodium pyrophosphate 8%, naphthalene sulfonate formaldehyde condensate 6%, ammonium sulfate 10%, polyether antifoam agent 0.03%, kaolin added to 100%.

[0112] Comparative Example 1

[0113] Provided is a glufosinate-ammonium-containing herbicide in the form of a soluble liquid formulation, prepared from raw materials including, by mass percentage, glufosinate-ammonium 24%, sodium fatty alcohol polyoxyethylene ether sulfate 10%, propylene glycol methyl ether 4%, and deionized water to 100%.

[0114] Compared with Example 1, o-phenanthroline is absent.

[0115] Comparative Example 2

[0116] Provided is a glufosinate-ammonium and haloxyfop-R-methyl-containing herbicide in the form of a microemulsion, prepared from raw materials including, by mass percentage, glufosinate-ammonium 14%, haloxyfop-R-methyl 2%, cyclohexanone 10%, N-alkyl aminodipropionic acid 2%, nonylphenol polyoxyethylene ether 4%, high-carbon alcohol antifoaming agent 0.05%, propylene glycol 5%, and deionized water to 100%.

[0117] Compared with Example 6, 2,2'-bipyridine is absent.

[0118] Comparative Example 3

[0119] Provided is a haloxyfop-R-methyl and 2,2'-bipyridine-containing herbicide in the form of a microemulsion, prepared from raw materials including, by mass percentage, haloxyfop-R-methyl 2%, 2,2'-bipyridine 2%, cyclohexanone 10%, N-alkyl aminodipropionic acid 2%, nonylphenol polyoxyethylene ether 4%, antifoaming agent 0.05%, propylene glycol 5%, and deionized water to 100%.

[0120] Field efficacy test

[0121] (1) Test environment: Inner Mongolia Ordos City wasteland, summer drought orange warning, total rainfall in the local area for 6 months before the test was 23.6 ml. The test site was mainly dominated by Chenopodium album, Setaria viridis, and Scirpus juncoides, with a small amount of Brassica campus, Commelina communis, etc.

[0122] (2) Test agent: the formulations provided by herbicide Examples 1-13.

[0123] (3) Control agent: the formulations provided by Comparative Examples 1-3, 200 g / L glufosinate-ammonium aqueous agent (commercially available), and 20% glufosinate-ammonium and haloxyfop microemulsion (commercially available), wherein "%" represents the active ingredient content of the corresponding agent.

[0124] (4) Test method: according to the area of the test plot, accurately weigh the various agents, dilute with water, and then uniformly spray using a knapsack sprayer, with a fan-shaped nozzle specially designed for herbicides. During spraying, attention should be paid to uniformly spraying the liquid to the test plot, so as to avoid over-spraying or under-spraying. After application, a shading curtain was placed on the test site to simulate the insufficient sunlight of an overcast day.

[0125] (5) Result investigation: the weed death was observed at 30 days and 60 days after the drug, and the herbicidal activity of each treatment was compared. The efficacy results are shown in Table 5.

[0126] In Table 5, the letters a-h behind the control effect are the marks of significance analysis, and different marks represent significant difference, a is the best efficacy, and the order is the same, and h is the worst efficacy.

[0127] Table 5 Fresh weight control effect of field weeds

[0128]

[0129] Table 5 shows that the herbicidal composition suitable for overcast and drought environment of the application can significantly improve the efficacy of glufosinate ammonium under drought compared with the traditional single agent, the efficacy of the active ingredient is 2 times or more than that of the single agent under the same dosage, and even better than the single agent with higher dosage, and compared with the commercial compound preparation, the herbicidal effect is better, the persistence is longer, and the weed spectrum is wider.

Claims

1. A herbicidal composition containing a metal ion complex, comprising herbicidal active ingredient A, a metal ion chelate, and herbicidal active ingredient B; wherein the herbicidal active ingredient A is glufosinate; When the herbicidal active ingredient B is benzoxazine and the metal ion chelate is o-phenanthroline, the mass ratio of the herbicidal active ingredient A, the herbicidal active ingredient B and the metal ion chelate is (1.875~6): (0.075~0.5):1; When the herbicidal active ingredient B is highly effective flupyridine and the metal ion chelate is 2,2'-bipyridine, the mass ratio of herbicidal active ingredient A, herbicidal active ingredient B and metal ion chelate is (1.5~24):(0.025~1):1; When the herbicidal active ingredient B is pyrifluquinazon and the metal ion chelate is sodium pyrophosphate, the mass ratio of the herbicidal active ingredient A, the herbicidal active ingredient B and the metal ion chelate is (1.875~30): (0.03125~2):

1.

2. The herbicidal composition containing a metal ion complex according to claim 1, characterized in that, When the herbicidal active ingredient B is benzoxazine and the metal ion chelate is o-phenanthroline, the mass ratio of herbicidal active ingredient A, herbicidal active ingredient B and metal ion chelate is 3:0.075:

1.

3. The herbicidal composition containing a metal ion complex according to claim 1, characterized in that, When the herbicidal active ingredient B is highly effective flupyridine and the metal ion chelate is 2,2'-bipyridine, the mass ratio of herbicidal active ingredient A, herbicidal active ingredient B and metal ion chelate is 6:0.25:

1.

4. The herbicidal composition containing a metal ion complex according to claim 1, characterized in that, When the herbicidal active ingredient B is pyrifluquinazon and the metal ion chelate is sodium pyrophosphate, the mass ratio of herbicidal active ingredient A, herbicidal active ingredient B and metal ion chelate is 1.875:0.5:

1.

5. A glufosinate herbicide comprising the herbicidal composition and adjuvant containing a metal ion complex as described in any one of claims 1-4.

6. The glufosinate-ammonium herbicide according to claim 5, characterized in that, The content of the herbicidal composition containing metal ion complex is 1% to 90% by mass percentage.

7. The glufosinate herbicide according to claim 6, characterized in that, The content of the herbicidal composition containing metal ion complex is 5% to 90% by mass percentage.

8. The glufosinate herbicide according to claim 5, characterized in that, The additive is one or more of surfactants, solvents, fillers, thickeners, defoamers, and antifreeze agents.

9. The glufosinate herbicide according to claim 8, characterized in that, The surfactant is selected from one or more combinations of nonylphenol polyoxyethylene ether, long-chain quaternary ammonium salt, N-alkyl betaine, alkyl glucoside, fatty alcohol polyoxyethylene ether, sodium fatty alcohol polyoxyethylene ether sulfate, or tallow amine.

10. The glufosinate-ammonium herbicide according to claim 8, characterized in that, The solvent is one or a combination of solvent oil, methyl oleate, cyclohexanone, decanamide, or N,N-dimethylformamide.

11. The glufosinate-ammonium herbicide according to claim 8, characterized in that, The filler is one or a combination of kaolin, diatomaceous earth, and ammonium sulfate.

12. The glufosinate-ammonium herbicide according to claim 8, characterized in that, The thickener is one or both of xanthan gum and gum arabic.

13. The glufosinate-ammonium herbicide according to claim 8, characterized in that, The defoamer is one or a combination of several of the following: silicone defoamer, polyether defoamer, and polyether-modified silicone defoamer.

14. The glufosinate herbicide according to claim 8, characterized in that, The antifreeze agent is one or a combination of polyethylene glycol, urea, and propylene glycol methyl ether.

15. The glufosinate-ammonium herbicide according to claim 8, characterized in that, Dosage forms include soluble concentrates, emulsions, wettable powders, soluble powders, soluble granules, water-dispersible granules, water suspensions, oil suspensions, microcapsule suspensions, tablets, or effervescent granules.

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