CN105580810A - Herbicide composition containing halauxifen-methyl and diflufenican - Google Patents

Abstract

The invention belongs to the technical field of farm chemical herbicides, and particularly relates to a herbicide composition containing halauxifen-methyl and diflufenican. The herbicide composition is suitable for wheat fields. The weight ratio of the active ingredient halauxifen-methyl to the active ingredient diflufenican ranges from 1:1.6 to 1:100. According to the herbicide composition, the weed control spectrum is broadened, the control effect is enhanced, the situation that the herbicide resistance of weeds can be rapidly generated when weed control is performed with a single herbicide is avoided, generation of the herbicide resistance of weeds is retarded, the dosage is reduced, the use cost is lowered, and environmental pollution is relieved.

Description

A kind of herbicide composition containing fluclopyrid and diflufenamide

technical field

The invention belongs to the technical field of pesticides and herbicides, and in particular relates to a herbicide composition suitable for wheat fields containing haclopyrid and diflufenican.

Background technique

Wheat is one of the main food crops in my country. Its planting area and total output are second only to rice. The national planting area is more than 30 million hectares, about 450 million mu, accounting for 22%-30% of the country's cultivated land area, which is about 20%-27% of the area, the total wheat output is about 100 million tons, reaching 22% of the total grain output (Wu Mingrong et al., 2013, Pesticides). Wheat is the main commodity grain and strategic reserve grain variety in my country, and plays an important role in grain production, circulation and consumption. The development of wheat production is of great significance to the development of my country's national economy and people's lives. According to the national weed census data report, there are more than 200 kinds of weeds in my country's wheat field, the area of weed damage accounts for more than 30% of the wheat planting area, and the loss accounts for about 15% of the total wheat output. Therefore, weed control in wheat fields is one of the important tasks in wheat cultivation.

Herbicides are commonly used to control weeds in wheat fields, and play an important role in promoting wheat yield and saving planting costs. However, with the long-term and large-scale promotion and application of herbicides, the problems of weed resistance, population succession and phytotoxicity in chemical weed control in farmland are becoming more and more serious, seriously affecting the high yield and harvest of wheat and the safety of subsequent crops (Wei Youhai, Hubei Agriculture Science, 2011.4). At present, there are some disadvantages in commonly used medicaments in wheat fields. For example, if the sulfonylurea herbicides tribenuron-methyl and bensulfuron-methyl are used too high or too late, they will cause phytotoxicity to subsequent crops such as peanuts and soybeans. Excessive dosage and improper application of phenoxycarboxylic acid herbicides 2,4-D-butyl ester and dimethyl tetrachloride sodium salt can easily cause crop phytotoxicity and drift, which can cause phytotoxicity to nearby dicotyledonous crops.

Long-term use of a single herbicide will lead to a decrease in the number of sensitive weeds, and an increase in the number of insensitive or malignant weeds, causing changes in the weed community. In the winter wheat producing areas where herbicides are used alone, the weed community in wheat fields has undergone serious changes. The number of malignant weeds that are difficult to control with various herbicides such as pigtails, lacquer, mother-in-law, and shepherd's purse has increased year by year, and has seriously affected the Harvesting of wheat crop yield.

Diflufenican, CAS No. 83164-33-4; English name Diflufenican; English synonyms dff, Kwarc, Couger, Brodal, Canyon, Legato, JAVELIN, FENICAN, B38544, FR1078; Chinese synonyms Diflufenican, 2,4 -Dichloro-2-(Α,Α,Α-trichlorofluorom-phenoxy)-3-pyridineanilide, 2',4'-difluoro-[2-(3-trifluoromethylphenoxy )]-3-pyridineanilide, 2',4'-difluoro-2-(α,α,α-fluoromethyl-m-phenoxy)-3-pyridineanilide; CBNumber is CB4370925. Diflufenamide is an amide herbicide, applied before and after weed germination can form a leaching-resistant medicinal soil layer on the soil surface, and maintain activity throughout the crop growth period. When the weeds germinate through the medicinal soil layer, the young shoots or roots can absorb the drug. Diflufenican can inhibit the biosynthesis of carotenoids. The content of carotenoids in the weed plants that absorb the drug decreases, resulting in the destruction of chlorophyll and the rupture of cell membranes. , the weeds show that the young shoots are decolorized or white, and finally the whole plant wilts and dies. The speed of death is related to the intensity of the light, the intensity of the light is fast, and the light is weak and slow. Diflufenamide was safe for wheat growth when applied before and after emergence of winter wheat. If used before germination, barley and rye are slightly sensitive, but in case of continuous heavy rain during pre-emergence application, especially during the budding stage, it can cause temporary discoloration of crop leaves, but generally it can be restored. Winter wheat is safer than spring wheat, and on spring sown grains, post-emergence pre-application is safer than pre-emergence application. Such as Rubiaceae (pig weed, western madder), Scrophulariaceae (grandma), Violaceae (pansies), Amaranthaceae (maranth), Caryophyllaceae (chickweed), Labiatae (weasel petals) , Malvaceae and Polygonaceae plants. On the contrary, it is almost ineffective for some genera of Umbelliferae (carrot) and Compositae.

Fluclopyridine, the common name in English is halauxifen-methyl. Dow AgroSciences obtained the provisional registration of 93% fluclopyridine technical on April 10, 2014. The registration number is LS20140138, which is slightly toxic. Halauxifen-methyl is a picolinate herbicide. Haclopyralid is the first product of a new chemical class of arylpyralidic acids among synthetic auxin herbicides. It mimics the effects of high doses of natural auxin, causing overstimulation of specific auxin-regulated genes, interfering with multiple growth processes in sensitive plants. Fluclopyrid for post-emergent broadleaf weed control. Herbicides containing haclopyridine can be used for resistance management through the control of partially resistant weeds such as pigtails, chickweed and cannabis weeds. In addition, haclopyridine can be rapidly degraded by microorganisms in the environment, providing greater flexibility for subsequent crop planting. It has good control effect on amaranth retroflexus, velvetleaf, and sedge.

With the development of urbanization, a large number of rural labor force has been transferred to cities and towns, the degree of land concentration has increased, and weed control in wheat fields has become more and more dependent on herbicides. High efficiency, low toxicity, low residue, and less damage to subsequent crops are important directions for the research and development of herbicides.

In order to make up for the deficiencies in the actual application of the above single agents, the inventor has done in-depth research, and unexpectedly found on the basis of a large number of indoor formula screening and field drug efficacy tests that the herbicide composition of the present invention can be used in a certain formulation. The combination within the ratio range has excellent control effect on weeds in wheat fields, and the control effect and activity level shown exceed the superposition of each component, and has unexpected synergistic effect, which solves the problem of the above two herbicides in The limitations in herbicide spectrum, control efficiency and safety have achieved the purpose of expanding herbicide spectrum, improving control efficiency and safety, and can meet the current agricultural demand for herbicides.

Contents of the invention

The purpose of the present invention is to provide a herbicide composition with broad herbicidal spectrum, good herbicidal effect, safe use and beneficial to the comprehensive management of weeds in wheat fields, aiming at the defects of current wheat field herbicides.

The present invention adopts following technical scheme:

The invention relates to a herbicide composition containing fluclopyridine and diflufenican.

The technical solution of the present invention is characterized in that the weight ratio of the effective components of haclopyridine and diflufenican is in the range of 1:1.16 to 1:100.

Another preferred solution of the present invention is characterized in that the weight ratio of the active ingredients haclopyridin and diflufenican is in the range of 1:3.1 to 1:100.

Another preferred solution of the present invention is characterized in that the weight ratio of the active ingredients haclopyridin and diflufenican is in the range of 1:6.25 to 1:100.

Another preferred solution of the present invention is characterized in that: the weight ratio of the active ingredients haclopyridin and diflufenican is 1:10 or 1:20, 1:40, 1:80.

The present invention relates to a kind of herbicide composition preparation, and this herbicide composition preparation is water suspension concentrate, emulsifiable concentrate, wettable powder, granule or water dispersible granule, and herbicide composition preparation includes on pesticides acceptable, a One or more auxiliary agents selected from wetting agents, emulsifiers, dispersants, thickeners, antifreeze agents, disintegrants, binders, defoamers, carriers or fillers.

The present invention relates to the use of the herbicidal composition in preventing and controlling weeds in wheat fields, and the weeds in wheat fields are Artemisia sorenzo, Sorrel, shepherd's purse, sage, brome, apricot, hard grass, etc. weeds.

In addition to the two active ingredients, the herbicide composition of the present invention can also add agriculturally acceptable auxiliary agents such as carriers, emulsifiers, dispersants, wetting agents, disintegrants, thickeners, and binders. Known methods are processed into water-dispersible granules, emulsifiable concentrates, wettable powders, granules and other formulations suitable for agricultural use.

The emulsifier is a compound of one or more anionic and nonionic surfactants, such as sorbitan fatty acid ester, alkylphenol polyoxyethylene polyoxypropylene ether, polyoxyethylene alkylamine, etc. , Anionic surfactants such as calcium dodecylbenzenesulfonate, sodium dodecylbenzenesulfonate, etc., can be one or more than two of them. The dispersant can be selected from polycarboxylate, lignosulfonate, alkylnaphthalene sulfonate, alkylphenol polyoxyethylene ether, sodium dodecylbenzenesulfonate, alkyl polyoxyethylene ether sulfonate Or one or more of alkylphenol polyoxyethylene ether formaldehyde condensates; the wetting agent can be selected from naphthalene sulfonate, sodium lauryl sulfate, secondary alkyl sodium sulfate, fatty alcohol polyoxyethylene ether , nonylphenol polyoxyethylene ether, sorbitan fatty acid ester polyoxyethylene ether, alkyl sulfonate; the disintegrant can be selected from ammonium sulfate, urea, starch and its derivatives One or more of substances, low-substituted hydroxypropyl cellulose, polyvinylpyrrolidone, sodium alginate, calcium chloride, sodium chloride, magnesium chloride, aluminum chloride; the binder can be selected from hydroxyethyl cellulose, Soluble starch, polyethylene glycol, methyl cellulose, polycarboxylates and water-soluble high molecular compound sodium carboxymethyl cellulose, polyvinyl alcohol, paraffin, gypsum, hydroxypropyl methyl cellulose, polyacrylamide One or more; the carrier can be selected from white carbon black, kaolin, bentonite, light calcium carbonate, gypsum, attapulgite, urea, sucrose, diatomite, bentonite, ammonium sulfate, urea, potassium dihydrogen phosphate, clay one or more of.

Beneficial effect:

1. Expanded weed killing spectrum. The effects of fluclopyridine on the broad-leaved weeds Artemisia sorenzo, snail's purse, and shepherd's purse are good, but it is ineffective on the grass weeds, and diflufenamide has a good effect on Artemisia sorenzo, shepherd's purse, and shepherd's purse , it also has a certain effect on scallops; the compound preparation of the two, haclopyridin and diflufenamide, has a good effect on wheat field weeds such as Artemisia sativa, scallops, shepherd's purse, and weed.

2. Enhanced prevention effect. After the two herbicides are compounded, the interaction type is additive and synergistic, and the control effect is enhanced, which is better than that of single use.

3. Avoiding the rapid occurrence of weed resistance and delaying the occurrence of weed resistance by using a single herbicide for control.

4. Reduce the amount of medicine, reduce the cost of use, and reduce environmental pollution.

detailed description

The present invention will be further described below in conjunction with specific embodiments, but the present invention should not be construed as being limited to these embodiments.

Example 1 Preparation of fluclopyridine (1g) and diflufenican (12.5g) aqueous suspension

96% halauxifen-methyl original drug and 93% diflufenican original drug were prepared into water suspension. Use an electronic balance to weigh quantitatively the original drug of fluclopyridine and diflufenamide respectively, first add special emulsifier to dissolve, then add 2 times of N,N-dimethylformamide until completely dissolved, and use 0.1% The Tween-80 aqueous solution was diluted into 1% water suspension concentrate for later use. Prepared as the active ingredients fluclopyridine (1g) and diflufenican (12.5g) compound water suspension concentrate, which can be used for 1ha.

Example 2 Preparation of the compound water suspension concentrate of fluclopyridine (1g) and diflufenican (25g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 3 Preparation of the compound water suspension concentrate of fluclopyridine (1g) and diflufenican (50g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 4 Preparation of the compound water suspension concentrate of fluclopyridine (1g) and diflufenican (100g)

The preparation method is the same as in Example 1, and the preparation is carried out by weighing the original drug of diflufenican.

Example 5 Preparation of the compound water suspension concentrate of fluclopyridine (2g) and diflufenican (12.5g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 6 Preparation of the compound water suspension concentrate of fluclopyridine (2g) and diflufenican (25g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 7 Preparation of the compound water suspension concentrate of fluclopyridine (2g) and diflufenican (50g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 8 Preparation of the compound water suspension concentrate of fluclopyridine (2g) and diflufenican (100g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 9 Preparation of the compound water suspension concentrate of fluclopyridine (4g) and diflufenican (12.5g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 10 Preparation of the compound water suspension concentrate of fluclopyridine ester (4g) and diflufenican (25g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 11 Preparation of the compound water suspension concentrate of fluclopyridine (4g) and diflufenican (50g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 12 Preparation of the compound water suspension concentrate of fluclopyridine (4g) and diflufenican (100g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 13 Preparation of the compound water suspension concentrate of fluclopyridine (8g) and diflufenican (12.5g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 14 Preparation of the compound water suspension concentrate of fluclopyridine (8g) and diflufenican (25g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 15 Preparation of the compound water suspension concentrate of fluclopyridine (8g) and diflufenican (50g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 16 Preparation of compound water suspension concentrate of (halopyridine 8g) and diflufenican (100g)

The preparation method is the same as that in Example 1, and the preparation is carried out by weighing the original drug of haclopyridine and diflufenican.

Example 17 50% halauxifen-methyl+diflufenican EC (1:10 EC)

According to the ratio of 1:10, weigh the quantitative 96% halauxifen-methyl technical material and 93% diflufenican technical material, and mix the active ingredients, emulsifiers and auxiliary agents according to the ratio of the formula Add in the mixing kettle in turn, stir evenly, and make 50% fluclopyridine diflufenamide emulsifiable concentrate

Example 18 50% halauxifen-methyl+diflufenican EC (1:20 EC)

The preparation method is the same as in Embodiment 17, and the proportioning ratio is 1:20.

Example 19 50% halauxifen-methyl+diflufenican EC (1:40 EC)

The preparation method is the same as in Embodiment 17, and the proportioning ratio is 1:40.

Example 20 50% halauxifen-methyl+diflufenican EC (1:80 EC)

The preparation method is the same as in Embodiment 17, and the proportioning ratio is 1:80.

Embodiment 21 indoor experiment

1) Test conditions

The weeds tested were Descurainiasophia (L.) webb, Galium aparina L., Alopecurusaequalis Sobl.., and Beckmanniasyzigachne (Steud.) Fernald. Cultivate test materials in a glass greenhouse with heating at a temperature of 15-25°C under natural light. Sow a certain amount of seeds of Artemisia persicae, scutellaria chinensis, A. chinensis, and Osmanthus chinensis in plastic pots with a diameter of 9 cm, and cover the weeds with 1-2 mm of soil. Put them into an enamel plate filled with water, and let the water gradually penetrate. After the water seeped to the soil surface, it was transferred to the artificial climate chamber for use.

In addition to not watering for 1-2 days after spraying, regularly replenish water with bottom seepage irrigation to maintain soil moisture.

2) Experimental design

The tested medicaments were 96% halauxifen-methyl technical material, 93% diflufenican technical material and the aqueous suspension in Examples 1-16.

Dose setting, fluclopyridine is set at 1, 2, 4, 8ga.i./ha, and diflufenamide is set at 12.5, 25, 50, 100ga.i./ha, fluclopyrid and diflufenamide The dosage of the original drug compound water suspension concentrate is in accordance with the values in Examples 1-16.

The experiment was carried out at the 2-leaf and 1-heart stage of C. chinensis and A. chinensis; the 3-5 leaf stage of Artemisia sorenzo;

Adopt ASS-4 type automatic control spraying system, fan-shaped nozzle, combined with nozzle pressure, flow rate, etc., spray 50mL of liquid medicine (equivalent to 30kg of water per mu) according to the actual spraying area (1.1m ² ), adjust the running speed, and put the to-be-treated The plastic pots are evenly arranged on the spray table for uniform spray treatment. The spray pressure is 0.4KPa, and the fan-shaped nozzle flow rate is 800mL/min. Spray in order from low to high. Each treatment was repeated 4 times.

3) Calculation of test results

The type of combined effect after mixed use was evaluated by Gowing method.

The calculation formula of the theoretical control effect of Gowing method is:

E ₀ =X+Y×(100－X)÷100

In the formula, X and Y are the measured control efficacy values (%) of the two single doses respectively, E is the measured control efficacy values (% ₎ of mixed use in different proportions, and E0 is the theoretical control efficacy value (%). When EE ₀ is between -10 and 10, it is an additive effect, when EE ₀ >10, it is a synergistic effect, and when EE ₀ <-10, it is an antagonistic effect.

Table 1 Indoor Determination of the Combined Action of Fluclopyridate and Diflufenac

It can be seen from Table 1 that fluclopyridine has a good effect on the broad-leaved weeds Artemisia spp. Artemisia argyi, Aurantia miltiorrhiza, and Saffron all have very good effects, and the effect on pig worms is slightly worse than that of other weeds.

It can be seen from Table 1 that the compounding of haclopyrid and diflufenican has an increased effect on Artemisia indica, and the E-E0 value is positive, showing an additive effect. The highest E-E0 value is 3.3 when the weight ratio is 1:12.5, followed by 3.1 when the weight ratio is 1:25, and 2.8 when the weight ratio is 1:3.1. The weight ratio ranges from 1:1.6 to 1:100. The E-E0 value is positive for additive effect. The weight ratio range is between 1:3.1 and 1:100. The E-E0 value is larger, and the weight ratio range is 1: The E-E0 value is very large between 6.25 and 1:100.

It can be seen from Table 1 that the compounding of haclopyridate and diflufenamide has an increased effect on pig scorpion, and the E-E0 value is positive, showing an additive effect or a synergistic effect. The highest E-E0 value is 10.1 when the weight ratio is 1:6.25, followed by the E-E0 value of 6 when the weight ratio is 1:12.5, and the E-E0 value is 4 when the weight ratio is 1:3.1. The E-E0 value of the weight ratio is in the range of 1:1.6 to 1:100. The E-E0 value is positive, which shows the additive effect or synergistic effect. The weight ratio range is between 1:3.1 and 1:100. The range is between 1:6.25 and 1:100, and the E-E0 value is very large.

It can be seen from Table 1 that the compounding of haclopyridate and diflufenamide has an increased effect on Amygonia, and the E-E0 value is positive, showing an additive effect. The highest E-E0 value is 9.2 when the weight ratio is 1:12.5, followed by the E-E0 value of 5.5 when the weight ratio is 1:25, and the E-E0 value is 5.4 when the weight ratio is 1:6.25. The weight ratio ranges from 1:1.6 to 1:100. The E-E0 value is positive for additive effect. The weight ratio range is between 1:3.1 and 1:100. The E-E0 value is larger, and the weight ratio range is 1: The E-E0 value is very large between 6.25 and 1:100. .

It can be seen from Table 1 that the compounding of haclopyridate and diflufenamide has an increased effect on Smilax chinensis, and the E-E0 value is positive, showing an additive effect. The highest E-E0 value is 7.5 when the weight ratio is 1:6.25, followed by the E-E0 value of 5.6 when the weight ratio is 1:12.5, and the E-E0 value is 5.1 when the weight ratio is 1:25. The weight ratio ranges from 1:1.6 to 1:100. The E-E0 value is positive for additive effect. The weight ratio range is between 1:3.1 and 1:100. The E-E0 value is larger, and the weight ratio range is 1: The E-E0 value is very large between 6.25 and 1:100.

To sum up, the advantages of the combination of fluclopyridine and diflufenican are complementary, and they have good effects on Artemisia sorenzo, S. chinensis, Aurantia chinensis, and Sage grass. The compound effect belongs to additive or Synergy.

Example 22 Field Control Effect Measurement

1. Test conditions

1) Selection of crops and cultivars

The wheat variety is Jimai 22, which was sown on October 9, 2014, at a rate of 15 kg per acre, with a row spacing of 18 cm.

2) Selection of test subject weeds

Descurainiasophia (L.) webb), Galium aparina L., Capsellabursa-pastoris, Beckmanniasyzigachne (Steud.) Fernald, etc.

3) Cultivation conditions

The experimental wheat field is located in Xiajiazhuang, Xujialou Office, Tai'an City, Shandong Province. The experimental field covers an area of 50 mu, and the surrounding crops are wheat. The test site is loam soil with an organic matter content of 1.8% and a pH value of 7.15. 50 kg of compound fertilizer is applied when the wheat is sown, and 10 kg of urea is applied at the jointing stage. The soil moisture RH (%) is about 50 when spraying.

The test terrain is flat, the management is consistent, and the fertility and watering conditions are good. The test site was watered 2 times. Water the wintering water before overwintering (early November), and water the slurry water after the wheat falls (mid-May).

Corn was planted in the previous stubble of the experimental field, and the herbicides used were mesotrione and atrazine.

2. Experimental design

1) Test drug

7.5g/L halauxifen-methyl EC, 50% diflufenican WDG, 50% halauxifen-methyl+diflufenican EC ( Pyridyl ester: diflufenican (1:10, 1:20, 1:40, 1:80, respectively), that is, the preparations of Examples 17-20.

2) How to use

The spraying device is the Noble Knapsack Sprayer, and each treatment in the test is uniformly sprayed with 450 liters of water per hectare. Spray evenly on the stems and leaves of annual weeds in the wheat field at the 2-5 leaf stage.

3) Application time and frequency

The test was carried out on March 19, 2015, and the pesticide was applied once. When the pesticide was applied, the wheat was in the turning green stage, and the growth was good; the weeds in the field were in the 2-5 leaf stage, and the main ones were Artemisia sativa, Swamp, Shepherd's Purse, and Cucumber.

3. Drug efficacy calculation method

Calculation formula:

Control effect (%) = (number of weeds in the control area - number of weed residues in the treatment area) ÷ number of weeds in the control area × 100

Fresh weight control effect (%) = (weight of fresh grass in blank control area - weight of fresh grass in treatment area) ÷ weight of fresh grass in blank control area × 100

Table 250% haclopyridyl diflufenamide EC applied to the field effect determination of wheat fields (survey 30 days after application)

It can be seen from Table 2 that 7.5g/L fluclopyridine EC has better effects on broad-leaved weeds Artemisia sativa, snails, and shepherd's purse, and is ineffective against grassy weeds; 50% diflufenamide WDG The effects on Artemisia solani, shepherd's purse, and sage are good, and it also has a certain effect on pig worms; the compound preparation of the two 50% fluclopyrid-diflufenamide EC is effective on Artemisia spp. Clamella, shepherd's purse, and scallops all have very good effects.

The control effect of 50% haclopyridine-diflufenamide EC (1:20) was the best, the total plant control effect reached 95.7%, and the fresh weight control effect reached 97.2%. , followed by 50% fluclopyridyl diflufenamide EC (1:40).

Through visual inspection, no herbicide damage was observed in the field experiment. 50% haclopyrid-diflufenamide EC is safe to wheat.

Compared with using one of the active ingredients alone, the compounding of the present invention expands the herbicidal spectrum, and can control the weeds in the whole growth period of the crops in one application. It has little impact on the environment, is safe for people, livestock, birds and beneficial organisms, and is conducive to maintaining ecological balance.

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and combinations can also be made, and these improvements and combinations are also possible. It should be regarded as the protection scope of the present invention.

Claims (6)

1. A herbicide composition containing haclopyridin and diflufenamide, characterized in that the weight ratio of the active ingredients haclopyridin and diflufenamide is in the range of 1:1.6 to 1:100. 2. A herbicide composition containing halfenidyl and diflufenamid according to claim 1, characterized in that: the weight ratio range of the active ingredients halclofenidyl and diflufenican is 1 :3.1 to 1:100. 3. A herbicide composition containing halfenidyl and diflufenamide according to claim 2, characterized in that: the weight ratio range of the active ingredients halhalfenidyl and diflufenamid is 1 :6.25 to 1:100. 4. A kind of herbicide composition containing haclopyridin and diflufenamid according to claim 3, characterized in that: the weight ratio of the active ingredients haclopyridin and diflufenamid is 1: 10 or 1:20, 1:40, 1:80. 5. A kind of herbicide composition containing fluclopyridine and diflufenamide according to claim 1-4, characterized in that, said herbicide composition preparation is water suspension concentrate, emulsifiable concentrate, can Wet powder, granule or water dispersible granule, the herbicide composition formulation includes pesticide acceptable, one or more selected from wetting agent, emulsifier, dispersant, thickener, antifreeze, disintegrating agent Additives, binders, defoamers, carriers or fillers. 6. A kind of herbicide composition containing fluclopyrid and diflufenamide according to claim 5, characterized in that, the use of the herbicide composition preparation in the prevention and treatment of weeds in wheat fields, the The weeds in the wheat field mentioned above are weeds such as Artemisia sorenzo, chrysanthemum, shepherd's purse, oyster grass, brome, amygonia, hard grass and so on.