使用八号菌(苏云金杆菌库斯塔变种Bacillus thuringiensis var.Kurstaki)拌种防治花生田蛴螬,在单中型种蛴螬发生田(刘荆等,1988),经济损害允许水平为花生收获期每亩虫量1672头;在中型种和小型种蛴螬混合发生田,其中型种蛴螬占三分之一左右的田块,经济损害允许水平可定为花生收获期每亩虫量6498头。根据蛴螬自然孵化率和花生收获时的生存率,可制定蛴螬卵期和孵化期的药剂防治指标。 Bacillus thuringiensis var. Kurstaki was used for seed dressing control of peanut fields. In the field of single-species perennial plants (Liu et al., 1988), the allowable level of economic damage was pests per acre Amount of 1672; in medium-sized and small species mixed occurrence of fields, which accounted for about one-third of the type of field plots, economic damage allowable level can be set as the peanut harvest per acre per plant amount of 6498. According to the natural hatching rate and the survival rate of peanut harvest, we can make the control index of the eggs in the hatching stage and in the hatching stage.