| 高粱蚜发生程度的预测研究 |
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| 引用本文： | 牛泽民,张萌德.高粱蚜发生程度的预测研究[J].昆虫知识,1999,36(3):154-155. |
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| 作者姓名： | 牛泽民 张萌德 |
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| 作者单位： | 山西省定襄县农牧局!定襄035400 |
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| 摘 要： | 通过１８年的田间调查和研究，得知高粱蚜的发生程度与麦蚜的发生程度呈负相关（ｒ＝－０．８９９８），因此即可用麦蚜发生程度预测后期高粱蚜的发生程度，预测回归式为ｙ＝５．９０１１－０．９８７４ｘ。该预报方法较常规测报法在时间上提早了１个月。经多年检验，预报准确率颇高。
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| 关 键 词： | 高粱蚜 麦蚜 发生程度 预测 |
A forecasting model to the occurrence degree of sorghum aphids, Rhopalosiphum sacchari (Zehntner) |
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| NIU Ze-Min, ZHANG Ming - De.A forecasting model to the occurrence degree of sorghum aphids, Rhopalosiphum sacchari (Zehntner)[J].Entomological Knowledge,1999,36(3):154-155. |
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| Authors: | NIU Ze-Min ZHANG Ming - De |
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| Abstract: | With 18 years of continuous field investigation and research, it is found that the occurrence degrees of sorghum aphids and wheat aphids are negatively related to each Other(r = - 0. 8998). to it is possible to forecast the later occurrence degree of sorghum aphids with the occurrence degree of wheat aphids. The forecasting model is y = 5. 9011 - 0. 9874x. Compared with the normal forecasting method, using this model a forecast can be made one month earlier. Tests on this model in years showed its high level of accuracy. |
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| Keywords: | sorghum aphides wheat aphides occurrence level |
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