Pesticides are collectively referred to as a class of drugs used in agricultural production to protect and promote the growth of plants and crops, and to apply insecticides, sterilizing, and killing harmful animals (or weeds). Pesticides are used to prevent, destroy or control diseases, insects, grasses and other harmful organisms that endanger agriculture and forestry. However, the unreasonable and rational use of pesticides to abuse pesticides can cause ecological imbalances and damage the environment. The basic scientific principles and methods for the rational use of pesticides which, Chinese pesticide Xiaobian summarized below five points.
First, master the key period of prevention and control of pests and diseases Timely medication, on the basis of forecasting and forecasting, master the key period of pest control, to understand the dynamics of pests and diseases, to grasp the weak links, to achieve early treatment. For example, the general pests are weak in resistance to larvae, and they have just emerged from the eggs, often clustered, seize this favorable opportunity, and timely use drugs to prevent and cure.
Second, understand the performance of the drug and the object of prevention and treatment, to achieve the right medicine. In the selection of pesticide types and dosage forms for pest control, you should use pesticides that can achieve control effects without side effects. Before using the medicine, it is necessary to understand the performance of the medicine and the object of prevention and treatment, so as to achieve the right medicine.
Third, the application concentration or dosage should be appropriate Regardless of the type of pesticide, the application concentration or dosage should be appropriate. Excessive use of the drug not only pollutes the environment, but also plants are prone to phytotoxicity, the amount of the drug is too small, no effect, resulting in waste of manpower and material resources. On the basis of the investigation and measurement environment, we decided the frequency of application according to the development of pests and diseases, and we must not apply the drugs freely regardless of the situation of pests and diseases.
4. Frequent rotations use several different types of pesticides. A pesticide is used to control a pest or disease, which can easily cause resistance to pests or germs and reduce the control effect. Frequent rotations of several different types of pesticides are effective measures to control the development of resistance to pests or germs.
V. Reasonable mixed pesticides All kinds of pesticides have their own advantages and disadvantages. Mixed use can complement each other's shortcomings and exert their strengths to increase or decrease the effectiveness of both diseases and pests. However, it is not suitable for all pesticides to be mixed. It is not the more types, the better, the improper mixing, the decomposition, precipitation, oil and water separation is not normal.
Follow the basic principles and methods of using pesticides and use pesticides scientifically and rationally.
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