水稻纹枯病,是我区发生面积最大的病害。稻纹枯病主要侵害叶鞘和叶片,破坏稻株的组织、影响茎秆和叶片的光合作用,削弱根部的吸收能力,造成软腐而倒伏;穗部发病,影响谷粒的充实,严重的造成白穗。防治上应立足于农业防治,并辅以药剂防治相结合的综合防治措施。(一)消灭菌源。早稻收割后脱落在田中的菌核是当年晚稻的主要侵染来源,秋季形 Rice sheath blight, is the area where my area has the largest disease. Rice sheath blight mainly affects leaf sheaths and leaves, destroying the tissue of rice plants, affecting the photosynthesis of stems and leaves, weakening the absorption capacity of roots, resulting in soft rot and lodging; spike incidence, affecting the grain filling, serious cause White spike. Prevention should be based on the prevention and treatment of agriculture, supplemented by the combination of chemical control measures integrated prevention and treatment. (A) eliminate bacteria source. The sclerotinia that fall off after harvesting in early stage rice in Tanaka was the main source of infection of late rice in that year, and the autumn shape