油菜菌核病油菜菌核病又俗称为白杆，空杆、烂杆、霉蔸等。在全国各地都有发生其症状为：该病在油菜的各生育期各部位均能受害，以茎部受害最重。苗期病斑多在池面根茎相接处发生，形成红褐色斑点，后扩大转为枯白色，组织湿腐，上面长出白色絮状菌丝。严重时造成茎腐幼苗... Rape sclerotiorum Sclerotinum scab and commonly known as the white pole, empty pole, rotten pole, mold and so on. In all parts of the country have their symptoms are: the disease in all parts of the rape’s growth period can be harmed to stem the most affected. Seedling spots and ponds in the rhizome phase at the junction, the formation of reddish-brown spots, expanded to dry white, wet tissue, grow above white flocculent mycelium. Severe stalk rot caused seedlings ...