| 榆树县应用松毛虫赤眼蜂防治玉米螟的效果 |
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| 引用本文： | 刘佐政,崔永余,万邦英,王承纶,崔德君,路红,王国学,于凤兰.榆树县应用松毛虫赤眼蜂防治玉米螟的效果[J].中国生物防治,1990(4). |
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| 作者姓名： | 刘佐政 崔永余 万邦英 王承纶 崔德君 路红 王国学 于凤兰 |
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| 作者单位： | 吉林省榆树县植保站
(刘佐政，崔永余，万邦英)，吉林省农科院植保所
(王承纶，崔德君，路红，王国学)，吉林省植保站(于凤兰) |
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| 摘 要： | 1986～1989年,经157万亩大面积应用松毛虫赤眼蜂防冶玉米螟的结果表明,当玉米田间螟卵发生初期和盛前期,以每亩1.1～1.5万头,分两次放蜂,卵粒寄生率为58.1～79.4％。放蜂区比未放蜂的对照区可降低被害株率41～64.4％,平均百株螟虫可减退66.6～85.9％,有效地控制了玉米螟对玉米的危害,每亩可挽回损失34.7公斤,经济效益显著。现已列为吉林省松辽平原玉米带防冶玉米螟的重要措施。
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| 关 键 词： | 玉米螟 松毛虫赤眼蜂 |
AN EVALUATION OF THE EFFICACY OF LARGE SCALE RELEASING TRICHOGRAMMA DENDROLIMI AGAINST ASIAN CORN BORER IN YUSHU COUNTY |
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| LIU Zuozheng GUI Yongyu WAN Bangying.AN EVALUATION OF THE EFFICACY OF LARGE SCALE RELEASING TRICHOGRAMMA DENDROLIMI AGAINST ASIAN CORN BORER IN YUSHU COUNTY[J].Chinese Journal of Biological Control,1990(4). |
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| Authors: | LIU Zuozheng GUI Yongyu WAN Bangying |
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| Abstract: | During 1986 to 1989, mass reared Trichogramma dendrolimi was released in an area of 100,000 ha of corn in Yushu Co., Jilin Province to control Asian corn borer, Ostrinia furnacalis Lep.: Pyralidae]. The releases were made at the beginning and early peak of corn borer egg appearances, respectively, at the rates of 16,500-22,500 wasps/ha. The egg parasitization was 58.1-79.4%. The percent infected corn plants and the number of larvae per 100 stalks were reduced by 66.6-85.9% and 41-64.4%, respectively, in comparison with that in the unreleased check fields. An estimated yield increase of 530.5 kg/ha was obtained in the releasing fields. The releases also gave a 1:35.2 ratio in the cost/benefit analysis. |
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| Keywords: | Trichogramma dendrolimi Ostrinia furnacalis corn pests |
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