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在江苏沿海棉区相关市 (县 )进行了抗虫棉中 2 9抗虫性对比试验 ,结果表明 :(1 )抗虫棉田间各代次棉铃虫落卵量与常规棉无差异 ;(2 )抗虫棉对 2代棉铃虫幼虫的抗性明显 ,但其对 3、 4代棉铃虫的的控制作用显著下降 ;(3)抗虫棉除对棉铃虫有抗性以外 ,还对玉米螟、造桥虫等鳞翅目幼虫有一定的兼抗作用 ;(4)抗虫棉对棉蚜、红蜘蛛、盲蝽象等刺吸口器害虫没有抗性
The results showed that: (1) There was no difference between the number of cotton bollworm and the conventional cotton in the resistant cotton field; (2) ) Cotton had a significant resistance to 2nd generation cotton bollworm larvae, but its control on 3rd and 4th generations of cotton bollworm decreased significantly. (3) In addition to being resistant to cotton bollworm, , Bridge bugs such as Lepidoptera larvae have some anti-role; (4) cotton has no resistance to cotton aphid, red spider,