Field crops use chemical pesticides

1. Strictly configure not to use pesticides prohibited by the State. Pottery, wood, glass or plastic products should be used for the containers and utensils of pesticides. Metal utensils should not be used in order to avoid chemical reactions and reduce the efficacy and even poisoning. It is best to use the secondary dilution method when dispensing, that is, dilute the original drug with a small amount of water, stir well, and then to the water to the required concentration (note not to increase the concentration arbitrarily), while stirring on the water, so that the liquid concentration Keep it uniform so as not to affect the effectiveness of control. In order to enhance the efficacy of the drug, it is advisable to add the appropriate amount of vinegar before pouring the pesticide, or to use pesticide synergists. For the purpose of increasing the adhesion of the pesticide, 3000 times 6501 spreader or 0.1% detergent powder can be added. Adding a small amount of alcohol in the prevention of pests can enhance the efficacy and reduce the drug resistance.

2. Standard spray spraying should generally choose sunny afternoon, to avoid the air humidity, heavy fog, dew when spraying, so as to avoid phytotoxicity. Spraying for meticulous and thoughtful, requiring fine and uniform fog point, the liquid does not drop from the leaves for the degree. The back of the leaves must be sprayed when controlling the pests. The locusts should pay attention to the dense parts of the insects.

3. The safe use of medicines is based on the information on pest reports released by the local plant protection department. Pesticides are sprayed on pests that are most sensitive to pesticides during the growing period. When using chemical pesticides, try to choose pesticides that are less harmful to natural enemies, and pay attention to avoid the breeding period of natural enemies. Pesticides must be used alternately. It is not possible to use a single pesticide to continuously control the same pest and disease so as to avoid drug resistance. When mixing, strictly follow the pesticide mixing and use table, and pay attention to mix and use. Spray less, do not spray pesticides with a long residual effect. Crops are not sprayed or sprayed with broad-spectrum insecticides in the early stages of crop growth. The pest control period should be selected when the number of pests reaches the prevention and control index, the weakest period of pest vitality (infancy stage), the hidden danger of pests, the period of strong crop resistance (middle and late periods and dormancy period), and the avoidance of natural enemies. . When using drugs, we must strictly grasp the pesticide dose, concentration and safety interval, in the effective concentration range, try to use low concentrations to control pests.

4. Ingenious use of pesticides 1 for topical spraying. When the local crops are seriously damaged, targeted spraying may be adopted, which not only controls the occurrence of pests, but also reduces the use of pesticides, reduces production costs, and more importantly, protects natural enemies. 2 spray the ground. Spreading or spraying pesticides on the ground can kill pests and reduce damage to natural enemies. 3 selective medication. The use of agents with special killing effect can not only play a good control effect, but also protect natural enemies. 4Use of microbial agents to control pests. For example, Beauveria bassiana preparations prevent and control acarid pests. 5 clever mix of pesticides. The mixed use of pesticides with different mechanisms of action not only delays the development of drug resistance, but also enhances efficacy, reduces the amount of drugs used, and reduces costs. For example, the combination of slow-acting diflubenzuron and a fast-acting pyrethroid pesticide can speed up the knockdown, reduce the number of natural enemies, and reduce the amount of pyrethroid pesticides. 6 Combine chemical prevention with agricultural control and biological measures, implement comprehensive prevention and control, and try to minimize or minimize the use of pesticides, reduce the amount of medication and the number of medications, and protect the safety of natural enemies.