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稻曲病(Ustilagrnoidea virens(cke)Tak)是一种世界性病害。可造成严重减产,降低稻谷品质;对家禽、家畜等有一定毒性。近几年,由于感病品种的推广和氮肥使用量的增加,造成该病的大发生。因此,稻曲病菌源也多年积累,给稻曲病的流行创造了条件。我省1984年发病面积300万亩,1985年发病面积约500万亩,1986年全省发病面积超过500万亩,病穗率达10～33%。为探索栽培措施与稻曲病发生和流行的相关性,寻找有效防治办法,1986～1988年我们在沈阳进行了稻曲病流行规律及栽培防治研究。
Ustilagrnoidea virens (cke) Tak) is a worldwide disease. Can cause serious cut, reduce the quality of rice; for poultry, livestock and some have a certain toxicity. In recent years, due to the promotion of susceptible varieties and increased use of nitrogen fertilizer, causing the disease occurred. Therefore, the source of false smut also accumulated over the years, creating the conditions for the prevalence of smut. In 1984, the province had a disease area of 3 million mu. In 1985, the disease area was about 5 million mu. In 1986, the province’s disease area exceeded 5 million mu and the rate of diseased ear reached 10-33%. In order to explore the correlation between cultivation measures and the occurrence and prevalence of false smut and find out the effective control measures, from 1986 to 1988, we conducted a study on the prevalence and control of rice false smut in Shenyang.