According to a survey conducted at the end of September, large-scale rice pests and diseases in Yandu have been effectively controlled and the hazards are relatively light. Rice is safely entering the grain filling stage. However, there are still some rice fields due to the lack of drug control in the early stage or improper use of drugs, poor quality of the application, etc., brown planthoppers occur seriously, the number of burrowing insects amounts to 7500 to 20,000 heads, and the serious section is as high as 100,000 heads or more. Wear "Tang. "Break-in" field insects are mainly senile nymphs and adults. If no supplementary treatment is performed, the "bring out" pond will rapidly expand, seriously affecting the yield.
For those fields that have already appeared “spoiled†and have not been prevented or prevented by the use of drugs in the previous period, they should be given prompt treatment to control brown planthoppers. You can use 20% nitenpyrazine solution 30-40ml or 25% pymetrozine wettable powder 30-40g per acre and add 50-70kg water to spray. The effect is better when there is dew in the morning and the field is applied. Keep 5~7cm water layer and keep water for 3~5 days to facilitate the efficacy. Can not use imidacloprid, buprofezin and other brown planthopper has produced high resistance drugs. In the case of sheath blight, 20 ml of 30% benziconpharmaceutical EC can be sprayed together with Jiarun. Early maturation period, in the 20-day harvested plots, can be used per acre with 80% dichlorvos emulsifiable concentrate 300 milliliters of dry fine soil 30 kilograms, stuffy bored 2 hours later in the evening on a sunny day, fumigation control. 30 days before rice harvest, organophosphorus pesticides such as profenofos, Dafengfen, chlorpyrifos, and triazophos were discontinued, and medication safety was observed.
For those fields that have already appeared “spoiled†and have not been prevented or prevented by the use of drugs in the previous period, they should be given prompt treatment to control brown planthoppers. You can use 20% nitenpyrazine solution 30-40ml or 25% pymetrozine wettable powder 30-40g per acre and add 50-70kg water to spray. The effect is better when there is dew in the morning and the field is applied. Keep 5~7cm water layer and keep water for 3~5 days to facilitate the efficacy. Can not use imidacloprid, buprofezin and other brown planthopper has produced high resistance drugs. In the case of sheath blight, 20 ml of 30% benziconpharmaceutical EC can be sprayed together with Jiarun. Early maturation period, in the 20-day harvested plots, can be used per acre with 80% dichlorvos emulsifiable concentrate 300 milliliters of dry fine soil 30 kilograms, stuffy bored 2 hours later in the evening on a sunny day, fumigation control. 30 days before rice harvest, organophosphorus pesticides such as profenofos, Dafengfen, chlorpyrifos, and triazophos were discontinued, and medication safety was observed.
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