Rice blast is a common disease in rice in our city. It can be divided into nursery, leaf mites, thrift, stem stalk, branch stalk and sputum according to the occurrence period and location. The most important influence on rice yield is the stem stalk and the branch stalk. Lightly, the maturity is reduced, and the empty mites are increased. On the other hand, a large number of dead and white spikes appear, resulting in a substantial reduction in production until the harvest. Therefore, the majority of rice farmers should be highly valued and do a good job in the prevention and control of rice blast.

In order to alleviate the hazards of rice blast, in addition to selecting disease-resistant varieties, cultivating strong and reasonable fertilization and irrigation, it is also necessary to go deep into the fields and check the situation of the disease. The principle of medicinal control against rice blast is "the cure of spider mites and the general control of panicle sputum." When the leaf aphid reaches level 2, it should be immediately controlled by the drug. The ear-necked scorpion should be sprayed once at the earing 5% and at the heading stage, and the panicle-neck sputum is generally prevented. Selection of agents: 1 Bacillus subtilis 10 g / mu. 213% spring thunder. Three rings 75 ~ 100 g / mu. 340% rice bran emulsifiable concentrate 75 ~ 100 g / acre. 425% rice bran (prochloraz) 25-30 ml / mu. 540% Fuji No. 1 emulsifiable concentrate 75 ~ 100 g / acre. Spray 30-45 kg of water. The technical focus of rice blast prevention and control is to first master the period of prevention and control, and secondly to ensure the amount of water. When spraying, you should choose sunny weather. In case of continuous rain, you should grab the rain stop and rush to cure.