黄萎病是棉花严重病害之一。經过輸作、施肥等方面的很多試驗结果虽已拟定了一些减低病害的措施,但能彻底根治黄萎病的办法則还沒有。这是由于研究工作还常常带有经驗主义的性质,未能深入研究病原菌的生物学及其与环境的相互关系。 前此有关棉花黄萎病病原菌生物学的一些问题,实质上还只是猜測与假說。 首先,就病原菌的本质来說,意見就不一致。例如,原来是抗黄萎病的棉花品种,經过一些时候却失掉了这种抗病性。多数研究人員都認为黄萎病病原菌Vertjcillinm dahliae能很快变异,能在短期 Verticillium wilt is one of the serious diseases of cotton. Although many test results on the aspects of input and fertilization have formulated some measures to reduce the disease, the means to completely cure Verticillium wilt has not yet been established. This is due to the fact that the research work is often also empirical and fails to delve into the biology of pathogenic bacteria and its relationship to the environment. The previous questions about the biology of pathogen of cotton Verticillium wilt are essentially just speculation and hypothesis. First, the opinion is not consistent with the nature of pathogens. For example, the original cotton variety that was resistant to Verticillium wilt lost the disease resistance after some time. Most researchers agree that Vertjcillinm dahliae, a pathogen of Verticillium wilt, can mutate rapidly and can be used in short term