| 豫南麦田粘虫的防治指标研究 |
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| 引用本文： | 卢兆成
,沈仲志
,沈彩云
,黄伯良
,沈北芳.豫南麦田粘虫的防治指标研究[J].信阳师范学院学报(自然科学版),1989(2). |
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| 作者姓名： | 卢兆成 沈仲志 沈彩云 黄伯良 沈北芳 |
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| 作者单位： | LU Zhaocheng，etc |
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| 摘 要： | 木文是采用田间控制不同接虫数量为害为主,辅以大田调查对应的方法获得一个合理的粘虫防治指标。内容肯定虫量越多,产量损失越大,两者密切相关。同时通过大量试验数据确定每平方术有三龄幼虫20头为大田防治指标的基础。但在田间不同的气候条件中,其防治指标略有变化,即在田间的气温较高、温度较低的生态环境下,每平方米的防治指标定为有三龄幼虫23——26头,反之,为19——21头。并相应地制定了适用于这两种情况的两个防治指标数学模拟公式,很有使用价值。
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The Target of Prevention and Control of the Army worm |
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| LU Zhaocheng,etc.The Target of Prevention and Control of the Army worm[J].Journal of Xinyang Teachers College(Natural Science Edition),1989(2). |
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| Authors: | LU Zhaocheng etc |
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| Abstract: | A rational target of prevention and control of the oriental armyworm MYTHIMNA SEPARATA in the winter wheat field of Southern Henan Province by an experiment with different numbers of the armyworm in an experimental plot as well as an investigation on the spot. It is shown that the more the larvae, the lower the grain,yield. Generlly the index of 20 larvae per m2 is acceptable, 23-26 in a dry year and 19-21 in a rainy year. A simulative mathematic formula for the target is worked out in the end. |
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| Keywords: | mythimna separata economic threshold yield loss |
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