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为害作物 :花生为害症状 :花生小菌核病主要为害根部及根颈部 ,也能为害茎、叶及果实。初发病时 ,病斑暗褐色 ,渐扩大 ,变茶褐色 ,最后呈黑褐色。受害部位软化腐烂 ,维管束被破坏 ,整株萎蔫枯死。在潮湿情况下 ,病部表面生褐色毛状物 ,并产生灰白色粉状物 ,常使根茎的皮层及木
Harm crop: Peanut damage symptoms: Sclerotinia sclerotiorum main damage root and root neck, but also damage stems, leaves and fruits. Early onset, the lesion dark brown, gradually expanding, turning brown, finally dark brown. Victims of softening and decay, vascular bundle is destroyed, the whole plant wilted dead. Under wet conditions, the surface of the diseased part of the hairy brown hair, and produce gray-white powder, often rhizome cortex and wood