采用烟草处理土壤后可使菜田黄曲条跳甲幼虫密度明显减少 ,对其成虫的拒避率高达 79 79% ,种群趋势指数 (I)降至 1 882以下 ,干扰作用控制指数 (IIPC)为 0 1 2 43;保苗、保产效果分别为 86 91 %和 77 1 3% ,且其主要的控制机理是对成虫的显著拒避作用 After tobacco soil was treated, the density of P. trifoliata larvae significantly decreased, the rejection rate to adults was as high as 79 79%, the population trend index (I) dropped below 1882, and the disturbance control index (IIPC) Was 0 1 2 43; the seedling-keeping and yield-keeping effects were 86 91% and 77 1 3%, respectively, and the main control mechanism was the significant repellent effect on adults