论文部分内容阅读
上次的报告曾报道了在我国的主要小米产区所发生的小米紅叶病,是一种借蚜虫传播的病毒病害;玉米蚜(Rhopalosiphum maidis Fitch)、麦二岔蚜(Toxoptera graminumRond)和麦长管蚜(Macrosiphum granarium Kirby)均能传病,其中特別以玉米蚜最为重要,因为这种蚜虫,在自然环境条件下,时常在大田內的小米上面普遍的发生,同时它的传病效能极高。企图通过机械式的接种方法或借病株的种子和病田的土壤传播病害,一直沒能成功。
The previous report reported that millet leaf blight occurred in the main millet producing areas of our country, which is a virus disease transmitted by aphids. Rhopalosiphum maidis Fitch, Toxoptera graminum Rond, Macrosiphum granarium Kirby can all get the disease, especially the corn aphid is the most important, because this aphid, under natural environmental conditions, often occurs in millet in the field, and its transmission efficiency is extremely high . Attempts to spread disease through soil-borne seeds and diseased fields by mechanical inoculation methods or diseased strains have been unsuccessful.