转基因抗虫棉田棉铃虫庇护所的建立和评价

Establishment and Evaluation of Refuge for Helicoverpa Armigera Hübner of Bt Cotton Fields

【目的】对转基因棉田棉铃虫庇护所的植物进行选择。【方法】通过采取随机区组排列方式在转基因抗虫棉田种植庇护所植物,种植植物为:鹰嘴豆、木豆、玉米、胡麻、高粱、棉花等6种植物,并进行定期、定点、定株调查,比较分析不同植物种类棉铃虫卵和幼虫的数量差异。【结果】鹰嘴豆作为庇护所植物最好,其次是木豆、玉米、胡麻、高粱效果较差。鹰嘴豆的引诱效果与其他5种植物有极显著差异。几种诱集植物能够蓄养大量的草蛉、瓢虫、蜘蛛等天敌昆虫。【结论】鹰嘴豆、木豆、玉米作为转基因棉田棉铃虫庇护所植物较好。

[Objective]This study was conducted to select the plants of refuge on Bt cotton fields’ Helicoverpa armigera（Hübner）.[Method]Planting refuge in the Bt cotton fields by the way of a random block arrangement,plants are： chickpea（Cicer arietinum Linn.）, pigeonpea（Cajannus cajan L.Mill,）,corn（Zea mays L.）,benne（Linseed）,grain sorghum（Sorghum vulgare Pers.）,cotton（Gossypium spp.） 6 species of plants,whose fixed date,fixed point and fixed plants were surveyed,compare and analyse the quantity difference of Helicoverpa armigera eggs and larvae in different plant were comparatively analyzed.[Result]The results showed that chickpea were best as refuge plant;pigeonpea and corn followed.benne,grain sorghum less than other plant.The analysis of variance showed that chickpea had a significant difference with other five plants.These host plants can provide a lot of natural enemies： lacewing,ladybird beetle,spider,etc.[Conclusion]Chickpea,Pigeonpea,Corn can be some better host plant for refuge of Helicoverpa armigera（Hübner） on Bt Cotton Fields.