论文部分内容阅读
近年在湖南、广东、福建均有水稻齿叶矮缩病(Rice ragged stunt disease)害发生,造成粮食生产不同程度损失。为综合防治水稻齿叶矮缩病,中间寄主植物的铲除和早期褐稻虱(Nitaparata tugens)的防治是关键措施。因此,从1981～83年先后对湖南湘潭地区水稻田四种禾本科杂草:看麦娘(Alopecurusaequalis sobol)、商草(水稗)(Beckmanniaayzigachne(Steud)Fenald)、棒头草(Polypo-gon higegawori steud)和黑麦草(LoliumPerenne L.)是否属于水稻齿叶病的中间寄生进行了生物传毒实验及电子显微镜研究。一、传毒试验 (一)试验材料:供试的水稻齿叶矮缩病毒(Rice Ragged Stunt Virus—RRSV)是用
In recent years, rice ragged stunt disease has occurred in Hunan, Guangdong and Fujian Province, resulting in different degrees of grain production losses. In order to comprehensively control rice leaf-dwarf disease, the removal of intermediate host plants and the prevention and treatment of early-stage brown planthopper (Niparata tugens) are the key measures. Therefore, from 1981 to 1983, we studied four grass weeds: Alopecurus aequalis sobol, Beckmannia azigachne (Steud) Fenald, Polypo-gon higegawori steud and ryegrass (Lolium Perenne L.) were involved in the biological transmission of parasitic disease in rice leaf blight and electron microscopy. I. Toxicity test (a) Test material: Rice Ragged Stunt Virus-RRSV