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20 0 1年在江苏选择南京、盐城两地 ,试验观察转 Bt基因抗虫棉 GK2 2的种植 ,对棉田害虫及杂草种群变动的影响 ,结果是 :对咀嚼式口器害虫的棉铃虫 (H elicoverpa armigera)、红铃虫 (Pectinophoragossypiella)、玉米螟 (Ostrinia nubilalis)、金钢钻 (Earias cupreoviridis)、棉小造桥虫 (Anomis flava)、棉大卷叶虫 (Adoxophyes orana)等虫口数量、蕾铃被害均表现出较好的控制效果。处理区咀嚼式口器害虫幼虫总量 ,比对照区分别减少 92 .5 1、78.4 ,其中 :棉铃虫幼虫数量分别减少 88.3、72 .9 ,蕾铃被害减少 87.5、90 .7、74 .11、5 5 .85 ;红铃虫虫花减少 74 .4、5 1.6 4 ,铃内活虫减少 90、10 0 ;玉米螟虫口减少72 .7、10 0 ;金钢钻、造桥虫、卷叶虫虫口减少 93以上。对剌吸式口器盲蝽象 (Adelphocoris suturalis)、棉蚜 (Aphis gossyppii)、棉红叶螨 (Tetranychus cinnabarinus)等害虫 ,试验区和对照区种群消长动态趋势基本一致 ,差异不显著。两试点对杂草种类及数量调查 ,抗虫棉区和对照区差异亦不明显。
In 2001, we selected Nanjing and Yancheng in Jiangsu Province to test the effects of Bt transgenic cotton GK2 2 on the population dynamics of pests and weeds in cotton fields. The results showed that cotton bollworm H elicoverpa armigera, Pectinophora gossypiella, Ostrinia nubilalis, Earias cupreoviridis, Anomis flava, Adoxophyes orana, Lei Ling victims have shown a better control effect. The total number of larvae of chewing mouthparts in the treatment area decreased by 92.51 and 78.4 respectively compared with the control area, in which the number of larvae of H. armigera decreased by 88.3 and 72.9 respectively, and the number of prey and bollworm decreased by 87.5 and 90% respectively. 7, 74 .11 and 55.585. The numbers of red beetle insects decreased by 74.4% and 51.64, respectively, and the number of live bellies decreased by 90 and 10. , 10 0 ; Diamond drill, bridge parasite, leaf roller bug population reduced 93 or more. The trends of population dynamics of pest, Adelphocoris suturalis, Aphis gossyppii and Tetranychus cinnabarinus in experimental area and control area were basically the same, but the difference was not significant. Two pilot weeds species and quantity survey, insect-resistant cotton area and the control area difference is not obvious.