1. Strengthen field water and fertilizer management. Scientific management of fertilizer, to achieve irrigation and drainage, and rational use of fertilizer to prevent premature closure of the field, rice seedlings long shade. Appropriate baking of the field reduces the humidity in the field and deteriorates the living environment of rice planthoppers.
2, to grasp the insects, the right medicine. In order to master the pest situation, the plots with more than 1,500 bugs must be promptly administered with pesticides. The control agent can be used as follows: 10% imidacloprid wettable powder 15-20g/mu, 25% pymetrozine suspending agent 30-40g/mu, 75% Iressa water dispersible granules 3-5g/mu and so on. Also can choose 25% buprofezin WP 30-50 grams / acre, 25% rice bran WP 50 gram / acre and so on. Serious fields: Mu with 25% of WP WP 30-35g + 80% of Dichlorvos EC 100ml (or 40.8% Lothben EC 60ml) against 50kg of spray; when applied to the field to maintain 5 - 10cm shallow water layer.
3, do a unified defense rule. Prevention and control of rice planthoppers must adopt the method of unified prevention and control in order to better control large-scale damage, and the control effect of single family households is not ideal. For plots with more than 1,500 insects, the village group or the rice plot should be the unit to organize and prevent the plots.
4, to ensure the quality of application. In order to improve the control effect, the spray mist should be fine when applied, so that the liquid can adhere well to the rice leaves. The key part of the spray is the middle part of the rice, and the middle and lower parts of the rice should be penetrated when spraying. In order to better play the role of drugs. 10-15 days after the drug as the number of pests and then control 1 times.
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