茭白害虫长绿飞虱Saccharosydneprocerus是稻虱缨小蜂Anagrusnilaparvatae在稻田外的主要寄主之一。茭白田可为稻田提供大量的稻虱缨小蜂,从而提高对稻田稻飞虱的控制能力。从褐飞虱和长绿飞虱卵中羽化的稻虱缨小蜂均明显地选择寄生褐飞虱卵,对长绿飞虱卵的寄生率也较高。长绿飞虱在水稻上不能完成其生活史。因此,稻田和茭白田的合理布局可有效地提高稻田缨小蜂的数量,从而提高该寄生蜂对有关害虫的生防效益。 The white pest The planthopper Saccharosydneprocerus is one of the main hosts outside the paddy field Anagrusnila parvatae.茭 Pak Tin can provide a large number of rice planthoppers for paddy fields, thereby enhancing the control of rice planthoppers. Parasitoid brown planthopper eggs were obviously selected from the females of the Nilaparvata lugens and the Nilaparvata lugens, and the parasitism rates of the Ophylla spp. Eggs were also high. Gypsophila can not complete its life history on rice. Therefore, the rational layout of paddy field and 茭 白 田 can effectively increase the population of       in paddy field, and thus enhance the biocontrol effectiveness of the parasitoid on the pests.