Explanation of Category knowledge of mixed use of pesticides

The reasons for the effect of mixed use of pesticides are complicated. At present, it is mixed according to the expansion of the scope of prevention and treatment, the elimination of drug resistance and the increase of drug efficacy. The main types are as follows:

1. The mixed use of insecticides: it is made from the mixture of more than two kinds of insecticides, which is the most common kind of insecticides. The varieties of mixtures that have been used in China are: an enemy powder, B enemy powder, Xin enemy EC, anti-aphid Ling, compound fruit and so on. The mixture should be strictly managed to avoid shoddy production.

2. The mixture of insecticides and fungicides: made by mixing one or more insecticides with one or more fungicides. The mixed forms that have been used in China are: fenitrothasone plus isoprazin, dimethoate carbendazim, methamidophos, etc., most of which are currently used.

3. The mixture of insecticides and herbicides: it is made up of one or more insecticides and one or more herbicides.

4. Mixed use of fungicides: it is made from the mixture of two or more fungicides with more varieties. The varieties of mixtures used in our country are: seed dressing, metalaxyl mancozeb, polysulfide gel suspension, bacilli and so on.

5. The mixture of fungicides and herbicides: it is made from the mixture of fungicides and herbicides, and there are few varieties.

6. Mixed use of herbicides: it is made of two or more herbicides with many varieties. The main application formulations in our country are as follows: Baicaodujia 2pyr4? Application of Di-butyl ester in wheat field: atrazine plus Duror, atrazine plus 2pr 4? Application of butyl ester in corn field and so on.

7. Mixed use of plant growth regulation: it is made from the mixture of two or more plant growth regulators, with few varieties. Such as the mixture of mycin and dwarftin, gibberellin and naphthylacetic acid, etc.

8. The mixture of pesticides and chemical fertilizers: it is made by mixing different kinds of pesticides and different kinds of chemical fertilizers. For example, the mixture of herbicide and chemical fertilizer or the addition of carbofuran plus urea to the paddy field: diammonium phosphate and carbofuran are mixed and applied with the sowing of corn, soybean and sugar beet. Some plant bovine growth regulators are mixed with chemical fertilizers, especially high yield hormone, spray Shibao, Yemanbao and micro-fertilizer, which are used in the form of foliar spraying, seed soaking, seedling soaking or irrigation, and the effect is remarkable. For example, triacontanol was mixed with urea, potassium dihydrogen phosphate, ammonium molybdate and borax; after the mixture of triacontanol and ammonium sulfate, topdressing was applied to wheat field.