| Bt乳剂防治二代棉铃虫及保护天敌的研究 |
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| 引用本文： | 邢建民,黎新莹,冯书亮,范秀华,傅韵琴. Bt乳剂防治二代棉铃虫及保护天敌的研究[J]. 中国生物防治, 1990, 0(Z1) |
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| 作者姓名： | 邢建民 黎新莹 冯书亮 范秀华 傅韵琴 |
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| 作者单位： | 河北省农科院植保所，河北省农科院植保所，河北省农科院植保所，河北省农科院植保所，河北省农科院植保所 保定 071000，保定 071000，保定 071000，保定 071000，保定 071000 |
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| 摘 要： | 试验表明,在二代棉铃虫卵高峰期用Bt乳剂防治,一般年份用200倍,大发生年份用100倍,防治效果达75％以上,虫口密度被压低到百株2—3头经济损失允许水平以下。生防田主要捕食性天敌比化防田高3倍左右。
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| 关 键 词： | 苏云金杆菌 棉铃虫 昆虫天敌 |
STUDIES ON CONTROL OF THE 2ND GENERATION OF BOLLWORM WITH BT EMULSION AND PRESERVATION OF NATURAL ENEMIES |
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| XING Jianmin LI Xingying FENG Shuliang FAN Xiuhua FU Yunqin. STUDIES ON CONTROL OF THE 2ND GENERATION OF BOLLWORM WITH BT EMULSION AND PRESERVATION OF NATURAL ENEMIES[J]. Chinese Journal of Biological Control, 1990, 0(Z1) |
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| Authors: | XING Jianmin LI Xingying FENG Shuliang FAN Xiuhua FU Yunqin |
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| Affiliation: | Plant Protection Institute of Hebei Academy of Agricultural Sciences |
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| Abstract: | In the egg stage of the 2nd generation of cotton bollworm (Heliothis armig-era ) .spraying Bt (Bacillus thvringensis ) emulsion in 100-200 times water-di luted solutions obtained orer 75% control of this pest insect and the population density was suppressed below the economic injury level. The number of predatory natural enemy in the field sprayed with Bt emulsion was 3 times more than in thefield sprayed with conventional insecticide Decis |
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| Keywords: | Bt emulsion cotton bollworm natural enemies |
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