| 华北棉田二代棉铃虫发生程度中期预测 |
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| 引用本文： | 王武刚,郭予元,戴小枫.华北棉田二代棉铃虫发生程度中期预测[J].植物保护,1995,21(1):26-28. |
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| 作者姓名： | 王武刚 郭予元 戴小枫 |
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| 作者单位： | 中国农科院植保所 北京 100094 |
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| 摘 要： | 在华北棉区用扫网法和目测查虫法调查麦田一代棉铃虫幼虫发生量，用比较法和生命表分析法预测二代棉铃虫在棉田的发生程度和虫口密度。经1991—1994年应用检验，预测结果均与实际发生情况吻合。
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| 关 键 词： | 预测预报 二代棉铃虫 发生程度 |
Two Prediction Methods for the Occurrence Degree of the Second Generation Cotton Bollworm on Cottonin North China. |
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| Wang Wugang Guo Yuyuan Dai Xiaofeng.Two Prediction Methods for the Occurrence Degree of the Second Generation Cotton Bollworm on Cottonin North China.[J].Plant Protection,1995,21(1):26-28. |
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| Authors: | Wang Wugang Guo Yuyuan Dai Xiaofeng |
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| Institution: | Institute of Plant Protection;CAAS;Beijing 100094 |
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| Abstract: | Two methods for predicting the occurrence degree and larval number of 2nd generation cottonbollworm Helicoverpa armigera (Hubner)in cotton field were proposed by net sweeping and field samplingto inspect the larval number of 1st generation cotton bollworm and determined by comparative methods andlife table analysis.All the prediction results got in 1991-1994 were proved to be well coincided with therealities. |
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| Keywords: | prediction 2nd generation cotton bollworm occurrence degree |
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