去年江苏省南通市通州区有不少地方的水稻发生恶苗病,现将该病的发生特点、侵染途径及防治技术介绍如下。恶苗病从水稻苗期至抽穗期均会发生,以分蘖期发生最多,种子带菌是主要的侵染源,其次是病稻草。播种带菌稻种或用有病的稻草覆盖,当稻种萌发时,病菌从芽鞘侵入引起发病。虽然恶 Last year, Tongzhou District, Nantong City, Jiangsu Province, there are many places where the occurrence of rice seedlings disease, the occurrence of the disease are now features, methods of infection and prevention techniques are described below. Bakanae disease occurs from rice seedling stage to heading stage, with tillering stage occurring most, seed carrying is the main source of infection, followed by diseased straw. Sowing contaminated or infected rice with sick straw, when the rice germination, germs from the sheath sheath invasion caused by disease. Although evil