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水稻苗期易受多种病菌侵染而发病,主要有稻瘟病、纹枯病、恶苗病和水稻烂秧病等。水稻苗期病害防治不力对产量影响很大。水稻苗期病害防治应采取以下多种措施:(1)选用抗病品种,合理布局,避免品种单一化种值,这是防治稻瘟病最经济、有效的措施。(2)种子处理:稻种预浸12小时后,用强氯精300-400倍液浸种子12小时,洗净药液后催芽,可防治稻瘟病、白叶枯病、恶苗病和胡麻斑病等;用50%多菌灵100克对水50公斤,浸种30公斤,浸48-60小时,洗净药液后催芽,可防治稻瘟病、
Rice seedling susceptible to a variety of pathogens and infection, the main blast, sheath blight, diarrhea and rotten seedling disease and so on. Poor rice seedling disease prevention and control on the output of a great impact. Rice seedling disease prevention and control should take the following measures: (1) the selection of resistant varieties, rational distribution, to avoid the species of a single species value, which is the most economical and effective measures to control blast disease. (2) seed treatment: rice seed pre-soaking 12 hours, 300-400 times with strong chlorine seed soaking seeds for 12 hours, after cleaning the liquid sprout, can prevent rice blast, bacterial blight, diarrhea and flax Spot disease, etc .; with 50% carbendazim 100 grams of water 50 kg, soaking 30 kg, soaking 48-60 hours, after cleaning the liquid sprout, can prevent rice blast,