水稻纹枯病是我国南方稻区的三大病害之一。沈阳郊区过去虽有发生,但面积不大,病情不重。从1964年以来,郊区几个高产稻区纹枯病逐年严重,特别是随着施肥水平的提高和农星系统品种的推广,1965年纹枯病的分布面积更广,轻者千粒重降低,重者倒伏枯死,严重威胁水稻的高产再高产。为了摸清此病的发生情况,为今后开展防治工作提供依据,我们与省、市水稻样板田工作粗、东陵农业技术推 Rice sheath blight is one of the three major diseases in the rice planting area in southern China. Although the outskirts of Shenyang occurred in the past, but the area is not large, the condition is not heavy. Since 1964, the sheath blight of several high-yielding rice areas in the suburbs has been serious year by year. Especially with the promotion of fertilization and the promotion of varieties of agropary system, the distribution of sheath blight was more extensive in 1965, Who lodging dead, a serious threat to high yield of rice and then high yield. In order to find out the occurrence of the disease and provide basis for prevention and control work in the future, we work with provincial and city paddy rice fields,