Wheat powdery mildew prevention method

In recent years, with continuous improvement of wheat yield and quality, continuous improvement of the farming system, cross-region operations, and continuous development of no-tillage techniques, wheat pests and diseases have occurred frequently. As a technical instructor, I have gone deep into science and technology demonstration villages and conducted farm-to-farm farms to farmers. Technical support. And to address the prevention and treatment of wheat powdery mildew:

1. Agronomic measures The severity of wheat powdery mildew has a lot to do with the ecological conditions and the disease resistance of the varieties. Using correct agronomic measures can reduce the incidence. One is to select disease-resistant varieties; the second is reasonable fertilization, pay attention to the use of nitrogen, phosphorus, and potash fertilizers; the third is the rational close planting, pay attention to drainage, reduce the humidity in the field; fourth is to remove the residual strains with bacteria.

2. Chemical control In recent years, the main bactericide used to control powdery mildew in production is triadimefon. When the wheat rises or the disease index reaches 4 or more, it can be sprayed and prevented. Usually diluted with 20% emulsion 600-750 ml per hectare, add water 37.5-150 kg water diluted with a fog machine, or add 900 kg of water for constant spray, when severe conditions can be about 7 days before spraying again.

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