Rice blast prevention and control technology
Rice blast is the most potentially serious disease on rice. According to the invasion time and location of pathogens, they can be divided into seedling rice seedlings, leaf rice seedlings, section rice seedlings, panicle neck pods and grain pods, among which rice leaf pods and panicle neck lice are more common. In our province, the general climate during early rice is more conducive to disease.
Occurence of rice leaf blast should be controlled in time to prevent the occurrence and prevalence of panicle blasts in the later period. Control methods include l, selection of high-yield and disease-resistant varieties; 2. Use of pesticides for seed treatment; 3, removal of diseased rice straw; 4 rational fertilization; 5 chemical control, including the following species: (1) 20% tricyclazole WP 100 g/mu; (2) 75% tricyclazole wettable powder 30 g/mu; (3) 40% rice bran oil 100 g/mu; (4) 30% rice bran oil 150 g/mu; 5) 21.2% plus heat must be wettable powder 75 ~ 100 grams / sound; (6) 2% plus rice liquid 100 grams / acre, the above agents by adding 50 kg of water per acre spray.
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