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...

AI Technical Summary

Problems solved by technology

[0003] Although the above-mentioned herbicides can play a certain effect on the prevention and control of weeds in cornfields, they are indeed progressive, but in actual use, they are found to have a poor post-emergence control effect on broad-leaved weeds, and they have nothing to do with the control of broad-leaved weeds. Mixed use of weed herbicides is costly and inconvenient to use, resulting in the failure of these herbicides to achieve the best results in practical application

[0004] This shows that above-mentioned existing herbicide obviously still has inconvenience and defect in formula and use, and demands urgently further improving

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