(Summary description)Prevention method:
　　 1. Select disease-resistant varieties, pay attention to variety matching and rotation.

2. Treat rice seeds before sowing: use 45% promethazine to soak the seeds; apply fertilizer and medicine before transplanting: apply 3-5kg of urea per mu of seedling field one week before transplanting to enhance the plant's disease resistance , And combined with the prevention and control of leaf rice blast and the prevention of stem borers and planthoppers. You can also use 20% tricyclazole wettable powder to soak the seedlings for 5 minutes, remove the pile and cover for 30 minutes before replanting.

　　3. Reasonable fertilizer and water management, apply sufficient base fertilizer, apply topdressing early, apply nitrogen to control seedlings in the mid-term, and watch seedlings to supplement fertilizer in the later period. Avoid excessive or late application of nitrogen fertilizers, and pay attention to increasing the application of phosphorus and potassium fertilizers. Water management should be based on the principles of planting seedlings in shallow water, turning green in deep water, thinning water, and drying the fields.

　　 4. Chemical control. Early detection and early control of leaf plague; starting from the tillering stage, if acute spots are found in the center of disease or on the leaves, chemical control should be carried out in time.

　　 Commonly used agents: 　6% Kasugamycin WP 30-40g/mu/time, or 75% tricyclazole WP 30-40g/mu/mu or 40% Fuji No. 1 EC 100ml/mu/time. Add any of the above chemicals to 45-60 kg of water for spray control, and then control it again 6-8 days later. Replenish it in case of rain within 4 hours after spraying, in order to achieve the ideal control effect.

• Categories:Technical Services
• Time of issue:2021-03-17 18:16
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