高粱苗期蚜虫为害已成为高粱生产中的主要虫害,导致高粱严重减产,经济损失巨大。为害高粱的蚜虫有高粱蚜、玉米蚜、黍缢管蚜。 据1994～1995两年的调查和田间试验结果如下:①选用包衣种子的高粱田为害较轻,反之为害严重。②苗期连阴雨或遇一次中雨,可大大减轻为害,苗期干旱少雨为害严重。③品种间抗蚜虫能力也有差异,晋中405抗 Aphid damage in sorghum seedling stage has become the main pest in sorghum production, resulting in serious yield reduction of sorghum with huge economic losses. Aphids infest sorghum sorghum aphid, corn aphid, millet aphid. According to the 1994-1995 two-year survey and the field test results are as follows: ① use coated seed sorghum field damage less, on the contrary serious damage. ② seedling rainy or in case of a moderate rain, can greatly reduce the damage, seedling drought less serious damage. ③ varieties resistant to aphids are also different, Jinzhong 405 anti