论文部分内容阅读
油菜根肿病近几年已成为严重危害油菜生产的主要病害,该病由真菌侵染引起,土壤可带菌传染。病菌在土壤中可存活6～7年甚至10年,可危害油菜、白菜、萝卜、甘兰菜十字花科作物根系。当病菌侵染根系,根部出现大小不一的肿瘤,肿瘤后期破裂腐烂发臭,植株表现生长慢矮小,叶色淡,晴天凋萎下垂,最后枯死。油菜根肿病一旦发生,则难以防治,等到发病时再去防治为时已晚,因此预防工作尤为重要。
In recent years, rape root stomatitis has become a major disease that seriously endangers the production of rape, the disease caused by fungal infection, the soil can carry the infection. Bacteria in the soil can survive 6 to 7 years or even 10 years, can damage rape, cabbage, radish, cabbage cruciferous root crops. When the bacteria invade the roots, roots appear different sizes of tumors, the late rupture of the tumor rotten stinky, slow growth of plants showed short, pale leaves, sunny withered and drooped, and finally died. Once a rape clubroot disease occurs, it is difficult to control. It is too late to wait for the onset of the disease, so prevention is especially important.