论文部分内容阅读
油菜根肿病是一种传染性的病害。凡是属于十字花村的蔬菜如萝卜、白菜、芥菜等都能发生这种病害。发病症状根肿病主要发生在菜的根部，在油菜的苗期就能发生，但不很明显，等苗高Ic～17厘米，或移栽后病菌就在根部组织内大量活动繁殖，根的组织受到刺激而肿大变成畸形，比原来?
Cole clubbing disease is a contagious disease. All belong to the cross flower village vegetables such as radish, cabbage, mustard and other diseases can occur. Symptoms of clubroot disease occurs mainly in the roots of vegetables in rapeseed seedling stage can occur, but not very clear, such as seedling height Ic ~ 17 cm, or transplanted germs in the root tissue of a large number of activities of reproduction, root Tissue stimulated and enlarged into a deformity than the original?