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室内研究了微小花蝽、深点食螨瓢虫和塔六点蓟马3种朱砂叶螨的捕食性天敌昆虫的种内和种间干扰及竞争作用。结果表明,随自身密度的增加,天敌昆虫成虫对朱砂叶螨的捕食作用率逐渐减小,干扰和竞争均增大。种内以微小花蝽最大,其干扰系数和分摊竞争强度分别为0.598 5和0.547 7;种间以微小花蝽和塔六点蓟马间最大,其干扰系数和分摊竞争强度分别为0.821 3和0.670 8。种间干扰和竞争作用大于种内个体之间。
The inter-and inter-species interference and competition of predatory natural enemies of three species of Tetranychus cinnabarinus, Tetranychus urticae and the six-spotted thrips, were studied indoors. The results showed that with the increase of its own density, the predation rate of Tetranychus cinnabarinus adults decreased and the interference and competition increased. Within the species is the largest population of Stinkbug, the interference coefficient and the competitive intensity of competition are 0.598 5 and 0.547 7 respectively; the inter-species is the largest between the Stink bug and the tower six-point thrips, the interference coefficient and the competition intensity are 0.821 3 and 0.670 8. Interspecific interference and competition are greater than intraspecific individuals.