How to prevent crop damage?

How to prevent crops from being damaged by drugs? Please introduce the prevention methods when choosing pesticides correctly, we should understand its characteristics and use the drugs strictly according to the prevention and control scope specified in the label. When buying, you should prevent fake and shoddy products and ask for purchase invoices or credit cards. Correct calculation of accurate weighing, to avoid excessive use of pesticides, we should pay attention to the content of effective components, accurate preparation of liquid concentration, can not increase the concentration and increase the number of times. When preparing medicament scientifically, it is necessary to prepare the mother liquid first, add half of the clear water to the medicine box, then add the mother liquid, then add enough water to dilute it to the required concentration, mix it well during dilution, and add some adhesive properly to improve the physical properties of the liquid. Scientific mixed pesticides should have clear control objectives and requirements, after mixing, we should not only reduce the cost of control, but also increase efficiency, expand the scope of control, and ensure the safety of agricultural products with high efficiency, low toxicity and low residue. When mixing pesticides, we should pay attention to the negative reactions among pesticides and should not interfere with physics, chemistry and biology. General basic pesticides and acid pesticides should not be mixed, microbial pesticides and chemical fungicides, microbial fungicides should not be mixed, copper pesticides and zinc pesticides should not be mixed. Pay attention to the climate temperature is too high, the weather is too hot, the humidity is too high, the rain is not dry, the wind speed is too high, do not apply medicine when it is about to rain. And avoid the use of pesticides in sensitive periods of crops. To adjust the spraying equipment and evenly spray the knapsack sprayer, it is necessary to change the conical sprinkler to the fan sprinkler and the serpentine spraying to straight line spraying, so as to reduce the heavy spraying and improve the spray quality. When spraying, we should consider the direction of the wind and pay attention to the protection of nearby sensitive crops. At the same time, the spray should be uniform and the fog point should be fine and uniform. The medicine should be thoroughly cleaned before and after use. Click to get more pesticide application techniques