Compound herbicide, as well as preparation method and using method thereof

Abstract

The invention relates to a compound herbicide, as well as a preparation method and a using method thereof. The compound herbicide mainly comprises 1-75% by weight of lvxiancaolin, 1-75% by weight of nicosulfuron and the balance of auxiliary materials, and the formulation of the herbicide can be oil suspension, wettable powder or water dispersible granules. The preparation method comprises the following steps: supplementing the auxiliary materials into 1-75 parts by weight of the lvxiancaolin and 1-75 parts by weight of the nicosulfuron till 100 parts by weight, then mixing and uniformly stirring; and grinding, crushing or extruding the raw materials which are uniformly stirred. The using method is that the compound herbicide is used during the 4-6 leaf stage of corn, the 2-3 leaf stage of gramineous grass or the 2-6 leaf stage of broadleaf weeds. The compound herbicide disclosed by the invention has the advantages of simple production process, good product effects, broad weed control spectrum, special effects against the broadleaf weeds, safety to the corn, no impacts on afterreap crops, low control cost and convenience in use.

Description

technical field

[0001] The invention relates to a field herbicide used for crops and a preparation method and a use method thereof, in particular to a compound herbicide and a preparation method and a use method thereof. Background technique

[0002] Corn is an important grain and fodder crop in my country. With the development of industry and animal husbandry and the needs of the market, the annual planting area reaches 21.4 million hectares, accounting for 18.9% of the grain planting area, second only to rice and wheat, and has increased year by year The trend is that the annual output is 99 million tons, basically equal to that of wheat, accounting for about 22% of the total output of grain crops. However, there are many kinds of weeds in cornfields, including 22 families, 38 genera, and 43 species. my country can be divided into 6 weed damage areas. It is that the weeds are the most harmful at the seedling stage, and the occurrence and growth of weeds in the middle and la...

Examples

preparation example Construction

[0025] The preparation method of the oil suspension is as follows: 1-75 parts by weight of glufosinate and 1-75 parts by weight of nicosulfuron are supplemented with 100 parts by weight of auxiliary materials, mixed and stirred evenly; Put into a ball mill and grind for 3 hours; press the ground raw material into a sander with a pressure of 2 kg, and grind until the passing rate of a particle size 325 mesh sieve reaches more than 98%, and a qualified product is obtained.

[0026] When wettable powder is used as the dosage form of the herbicide of the present invention, white carbon black, kaolin, clay, lignosulfonate and the like can be selected as auxiliary materials.

[0027] The preparation method of the wettable powder is as follows: firstly, glufosinate-chloride is adsorbed with white carbon black, the mass ratio of glufosinate-chloride and white carbon black is 0.5-2:1, drying after adsorption, and detecting the content of glufosinate-chloride; The white carbon black wit...

Embodiment 1

[0031] Example 1: Weigh 1Kg of hw02, 1Kg of nicosulfuron, 10Kg of emulsifier 7218, and 88Kg of corn oil, mix them, and process them by ball milling to obtain an oil suspension.

Embodiment 2

[0032] Example 2: Weighed 15Kg of hw02, 3Kg of nicosulfuron, 15Kg of emulsifier 7218, and 67Kg of soybean oil, mixed them, and processed them by ball milling to obtain an oil suspension.

technical field

[0001] The invention relates to a field herbicide used for crops and a preparation method and a use method thereof, in particular to a compound herbicide and a preparation method and a use method thereof. Background technique

[0002] Corn is an important grain and fodder crop in my country. With the development of industry and animal husbandry and the needs of the market, the annual planting area reaches 21.4 million hectares, accounting for 18.9% of the grain planting area, second only to rice and wheat, and has increased year by year The trend is that the annual output is 99 million tons, basically equal to that of wheat, accounting for about 22% of the total output of grain crops. However, there are many kinds of weeds in cornfields, including 22 families, 38 genera, and 43 species. my country can be divided into 6 weed damage areas. It is that the weeds are the most harmful at the seedling stage, and the occurrence and growth of weeds in the middle and la...

Examples

preparation example Construction

[0025] The preparation method of the oil suspension is as follows: 1-75 parts by weight of glufosinate and 1-75 parts by weight of nicosulfuron are supplemented with 100 parts by weight of auxiliary materials, mixed and stirred evenly; Put into a ball mill and grind for 3 hours; press the ground raw material into a sander with a pressure of 2 kg, and grind until the passing rate of a particle size 325 mesh sieve reaches more than 98%, and a qualified product is obtained.

[0026] When wettable powder is used as the dosage form of the herbicide of the present invention, white carbon black, kaolin, clay, lignosulfonate and the like can be selected as auxiliary materials.

[0027] The preparation method of the wettable powder is as follows: firstly, glufosinate-chloride is adsorbed with white carbon black, the mass ratio of glufosinate-chloride and white carbon black is 0.5-2:1, drying after adsorption, and detecting the content of glufosinate-chloride; The white carbon black wit...

Embodiment 1

[0031] Example 1: Weigh 1Kg of hw02, 1Kg of nicosulfuron, 10Kg of emulsifier 7218, and 88Kg of corn oil, mix them, and process them by ball milling to obtain an oil suspension.

Embodiment 2

[0032] Example 2: Weighed 15Kg of hw02, 3Kg of nicosulfuron, 15Kg of emulsifier 7218, and 67Kg of soybean oil, mixed them, and processed them by ball milling to obtain an oil suspension.

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