土壤处理对黄曲条跳甲种群控制效应研究

Study on the Control Effect of the Soil Treatment on the Population of Striped Flea Beetle Plyllotreta striolata (F.)

摘要: 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０．１２４３；保苗、保产效果分别为８６．９１％和７７．１３％，且其主要的控制机理是对成虫的显著拒避作用。

Abstract: By the soil treatment with tobacco in vegetable field, the larva number of striped flea beetle Plyllotreta striolata (F.) decreased remarkably. The deterrent effect on the adults was 79 81%. The index of population trend (I-value) reduced to 1 882. The interfenence index of population control (IIPC) was 0 124 3, and its protective effect on seeding and yield of vegetable were 86 91% and 77 13% respectively. The control mechanism of tobacco on the population of striped flea beetle was its deterrent effect significantly.