水稻普通矮缩病、黄矮病及黄萎病,在本省主要由黑尾叶蝉传染。研究黑尾叶蝉的发生时期、数量消长与水稻主要感染期的关系,能为有效地进行治虫防病工作提供依据。现根据1971～1972年在萧山县迳游公社下俞大队等地的调查结果,将晚稻生长发育期间,黑尾叶蝉的发生迁移情况、矮缩病的感染发生时期及其防治简述如下。 Rice common dwarf, yellow dwarf and Verticillium wilt, mainly in the province by the black leafhopper infection. The study of the relationship between the occurrence period, the quantity and the decline of the black-leafhopper, and the main infection period of rice could provide the basis for the effective prevention and control of pest insects. According to the survey results of the Xiayu and other places in Xiayou County Tourism Community from 1971 to 1972, the occurrence and development of late rice during the growth and development of the black rice leafhopper, the incidence of dwarf disease and its prevention and treatment are summarized as follows.