Spraying pesticides can quickly treat pests and diseases, but in order to ensure that farmers do not pesticide poisoning when spraying pesticides, the farmers are reminded that the four weather conditions in summer are not suitable for pesticides.
Avoiding windy days and strong winds can easily cause poisoning of pesticides, so that sprayed powder or mist can fly in the wind, can not be attached to the surface of crops to exert its effects, and will float on the pesticides, causing poisoning.
Avoiding the loss of pesticides on rainy days, spraying on rainy days, rainwater can directly wash away the chemicals, which not only affects the effect, but also causes water pollution. Generally, the pesticide used for seed dressing is less affected by rainwater. The emulsifiable pesticide can form a layer of oil film on the surface of the crop, which has certain resistance to further rain washing, while the powder and wettable powder are the least resistant to rain.
Avoiding high temperature and high temperature, pesticides are prone to phytotoxicity, which accelerates the decomposition of pesticides and evaporates faster. When crops are hot in hot weather, the stomata are open, and the medicinal agents can easily enter the crops and cause phytotoxicity.
Avoid high-humidity days, high-humidity days, low-temperature, heavy fog or high-temperature weather, the drug is easily diluted by water to reduce the effect of the agent, in addition, the temperature is relatively low when the morning dew is not dry, the pest has not come out, At this time, the spraying effect is not good.
More pesticide knowledge , please pay attention to China Pesticide Network
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