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一、菌核病1.发病症状主要侵染植株茎部。田间多见植株上部叶片萎蔫变褐枯死,茎部断续发生褐色病斑,上生白色棉状菌丝体和白色颗粒状物,后变黑色而成为菌核。切开病株茎部可见有黑色鼠粪状或圆柱状菌核。病株枯死后呈灰白色,茎中空,皮层呈丝状。荚上病斑褐色,易枯死不能结荚,豆类易腐烂。
First, Sclerotinosis 1. The main symptoms of infection stems plant. See more plants in the upper leaves of the plant wilting brown dead, intermittent brown spots on stems, white onyx mycelium and white granular matter, later became black and become the sclerotia. Cut the diseased plant stem visible black rat feces or cylindrical sclerotia. The diseased plants were gray after withered, stem hollow, cortical filamentous. Pod spot brown, easy to die can not pod, legume perishable.