In recent years, all aspects of crop development have become more diversified. Nowadays, pests and weeds are also growing. Herbicides have been receiving increasing attention from all over the world. It is very important to strengthen farmers' awareness and application of herbicides in agricultural production. Arch Frame,Canadian Lock,W Ladder,Scaffolding Platform Kaiping Youying Metal Products Co., Ltd , https://www.yyscaffold.com
First let's talk about soil treated herbicides. The soil treated herbicide is flattened and sprayed evenly, otherwise the effect will be reduced. The efficacy of herbicides is related to soil factors. For example, the organic quality of soil such as trifluralin, Shitianpu, and acetochlor is low. The amount of organic matter in sandy soil and alfalfa is high, and the amount of clay and meadow soil should be increased. : chlorsulfuron-methyl, broad-grass clear, etc. When the PH value is greater than 7, there is a residual effect period of 4 years for the current year and later.
Next we talk about stem and leaf herbicides. The use of stem and leaf herbicides has a great relationship with temperature, light and the wetting of weeds on the surface of weeds. Generally, it is sprayed in a sunny or windless weather with a temperature of 20 to 30 degrees. The direction of the holes should be the same, the direction should be perpendicular to the wind direction or the angle should be no less than 45 degrees, and the wind should be sprayed first, then sprayed on the wind to prevent the liquid from drifting with the wind and harm nearby sensitive crops. Such as Yu Nong Le, Pu Te, acetochlor, stupa and other soils, long-term drought, low temperature, relative humidity below 65%, poor drug effect to increase the amount of drugs; high temperature, high humidity is conducive to the efficacy of drugs can be appropriate to reduce drugs the amount. Fluoride and 2,4-D butyl ester are volatilized under high temperature and strong sunlight. After application, the soil must be volatilized over time in a short time.
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