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本文是利用棉花耐害性或补偿能力,通过人工模拟摘蕾,了解二代棉铃虫发生为害规律和棉花本身耐害性(补偿能力)的关系.通过1982—1987年对棉花早期摘蕾并给以药剂点涂棉株顶尖试验示范,证明棉花生育早期具有很强的补偿能力.该项措施能控制二代棉铃虫在百株10头以下,增加棉花产量10%以上,减少棉花烂铃50%,增强棉花抗逆能力,推迟棉花衰退,同时能减少防治费用,保护天敌,具有明显的经济效益和生态效益.
In this paper, the relationship between the damage rule of second generation cotton bollworm and its own damage tolerance (compensatory ability) was studied by artificial simulation of bud extraction by using the ability of resistance or compensation of cotton.Through the early cotton extraction from 1982 to 1987, The top experimental demonstration of spot cotton plants proved that cotton had a strong compensatory ability in the early stage of its growth.These measures can control the second generation of cotton bollworm in less than one hundred strains to increase the output of cotton more than 10%, reduce the boll of cotton by 50% Cotton resilience, delayed cotton recession, while reducing the cost of prevention and protection of natural enemies, with obvious economic and ecological benefits.