How to use vegetables
First, different control targets, select different pesticide species to try to avoid drug abuse, indiscriminate use of drugs, so that the right medicine. There are two types of pesticides that are allowed on vegetables: First, biogenic pesticides, mainly including microbial pesticides (such as microbial pesticides), animal pesticides (such as insect pheromone pesticides), and plant-derived pesticides (such as pesticides and fungicides). , Synergist); Second, mineral-origin pesticides, mainly including inorganic fungicides (such as sulfur, copper), mineral oil emulsions. Second, to strengthen forecasting and forecasting, and rationally arrange the time of application of pesticides. According to the occurrence of pests and the appropriate period of prevention and control, choose pesticides with good control effect and less residue to arrange reasonable prevention and treatment time. The safety of the applicator and the crop must also be considered, and the application of pesticides at high temperatures or during sensitive periods of the crop should be avoided so as not to cause poisoning to the applicator or phytotoxicity to the crop. Third, choose the appropriate method of application Due to the different control objects, the application methods are also different, must fully consider the control of the object, the type of drug, the performance characteristics of the applicator in order to play its due role, make the agent evenly Distributed on the surface of crops or pests, achieving scientific and efficient control effects. Such as underground pests, it is often necessary to sprinkle powder, granules, or liquid medication. IV. Rational compounding of pesticides and the use of mixed pesticides must take care of several points. (1) Pests should have different resistance mechanisms for each component of mixed pesticides. The residual period of each composition in mixed pesticides should be Approximation; (2) Mixed use of pesticides before pests develop resistance; (3) Pesticides with different mechanisms should be selected for the use of pesticides in order to avoid cross-resistance and to delay pest resistance to certain pesticides. The rational use of several different types of pesticides should be considered, which will have a greater effect on extending the useful life of pesticides and improving control effectiveness. V. Accurately master the dose of the application of pesticides should consider different control objects to choose the right dosage. When all kinds of pesticides are used, they must be used according to the recommended dosage of the product introduction manual. The dosage should be strictly controlled and cannot be arbitrarily increased or decreased. Otherwise, the phytotoxicity of crops or the effect of control will be easily caused. When the operation is performed, not only the amount of the drug and the amount of water should be weighed, but also the area should be accurately calibrated. Only in this way can the medicine be accurately used and a good control effect can be achieved. In addition, try to reduce the number of applications as much as possible.