| 利用棉花耐害性控制二代棉铃虫危害研究 |
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| 引用本文： | 罗英,卜立芙.利用棉花耐害性控制二代棉铃虫危害研究[J].华北农学报,1989,4(1):85-90. |
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| 作者姓名： | 罗英 卜立芙 |
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| 作者单位： | 河北省农林科学院植物保护研究所 保定
(罗英，卜立芙)，河北省农林科学院植物保护研究所 保定(王金耀) |
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| 摘 要： | 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.
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| 关 键 词： | 棉花 棉铃虫 摘蕾 补偿能力 |
Studies on the Techniques of Using the Tolerance of Cotton Plants to Control the Second Generation Bollworm |
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| Luo Ying Bu Lifu Wang Jinyao.Studies on the Techniques of Using the Tolerance of Cotton Plants to Control the Second Generation Bollworm[J].Acta Agriculturae Boreali-Sinica,1989,4(1):85-90. |
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| Authors: | Luo Ying Bu Lifu Wang Jinyao |
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| Abstract: | This paper is aimed at finding out the relationship between the occure-nce of second generation cotton bollworm and its damage to cotton plants and the tolerance (or compensating ability) of cotton plants through picking bolls off plants artificially as bollworms damage to them. The experiments and demonstrations in 1982-1987 showed that cotton plants at their early stage of reproduction have a marvellous compensating ability when treated with artificial pick-off of bolls and smearing the tops of plants with chemicals. This measure gave the control effectiveness of under 10 boll-worms per 100 plants, yield increase of more than 10%, rotted bolls decrease 50% with the strengthening of the resistance of plants to adverse conditions and delaying the time of emaciation of plants. Meanwhile it reduced costs for control of cotton bollworm and protected natural enemies of the pest. |
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| Keywords: | Cotton bollworm Pick-off of bolls Compensating ability |
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