大豆丝核菌病,又叫大豆纹枯病,近年在本省发生较重。大豆被害后,轻则叶片枯落,重则茎枝枯死,豆荚内籽粒腐烂,影响产量和品质。我们于1984～1986年对该病的田间消长、影响发病的因素、产量损失、药剂防治等问题,进行了调查试验。现简报如下: Soybean Rhizoctonia, also known as soybean sheath blight, occurred more heavily in the province in recent years. Soybean was killed, ranging from leaves withered, while the stems and wilts died, the pods within the grain decay, affecting yield and quality. From 1984 to 1986, we carried out investigation and study on the field growth and decline, factors affecting the incidence, yield loss and drug control. Now briefing as follows: