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4. When the chemical solution is charged for the first time, since the air chamber and the spray rod contain clean water, the concentration of the chemical solution sprayed out in the first 2 to 3 minutes of spraying is low, so attention should be paid to supplementary spraying to avoid affecting the control effect of pests and diseases.
5. Pay attention when spraying, cooperate with hands and eyes, use force and rhythm, and spray pesticides at the plant parts affected by diseases and insects, so as to be thoughtful, uniform, correct and safe.
6. After the work is completed, the residual liquid medicine in the barrel should be poured out in time, washed with clean water and dried. At the same time, check whether there is water in the gas chamber. If there is water, remove the water joint to release the water.
7. If the sprayer will not be used in a short period of time, the main parts should be cleaned, dried and installed, and stored in a cool and dry place. If it is not used for a long time, all metal parts should be coated with butter to prevent rust.
8. Within 48 hours after the drug is used, if the phytotoxicity is found, 1%~2% washing powder solution should be sprayed immediately, or water should be sprayed several times to alleviate the phytotoxicity and reduce the loss.
