一、病害防治 早稻的主要病害有稻瘟病、纹枯病、白叶枯病及生理性病害。 1.稻瘟病 旱稻分蘖期叶片急性型病斑和孕穗期剑叶发病率在10％以上,发现有发病中心应立即防治。667平方米选用50％异稻瘟净6000倍液,40％克瘟散或50％多菌灵800～1000倍液,20％稻脚青或70％甲基托布津70克对水30～50公斤等喷雾防治稻瘟病。 First, disease prevention and treatment The main diseases of early rice blast, sheath blight, bacterial blight and physiological diseases. 1. Blast rice at the tillering stage of acute rice leaf lesions and booting the flag leaf incidence in more than 10%, found that the center of onset should be immediately controlled. 667 square meters selection of 50% different blast net 6000 times, 40% grams of blast or 50% carbendazim 800 to 1000 times, 20% rice orchids or 70% thiophanate-methyl 70 grams of water 30 to 50 Kg and other spray prevention and control of rice blast.