| 麦田蜡烛草生态经济阈值研究 |
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| 引用本文： | 朱良备,宋爱颖.麦田蜡烛草生态经济阈值研究[J].现代农业科技,2012(18):112-113. |
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| 作者姓名： | 朱良备 宋爱颖 |
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| 作者单位： | 安徽省萧县植保站 |
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| 摘 要： | 进行不同密度的蜡烛草对小麦产量影响的田间试验,结果表明:小麦产量损失率与蜡烛草密度的最佳回归模型为韦布尔函数Y=a×{1-(1/(exp(x-b)d/c])}。其中,a=73.212 1,b=9.623 8,c=503.850 1,d=1.018 3。蜡烛草的经济危害允许水平为3.98%,防除阈值为39.3株/m2。
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| 关 键 词： | 麦田 蜡烛草 经济阈值 防除指标 |
Research on Ecological Threshold of Phlenm paniculatum Huds. in Wheat Field |
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| Authors: | ZHU Liang-bei SONG Ai-ying |
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| Institution: | (Xiaoxian Plant Protection Station in Anhui Province,Xiaoxian Anhui 235200) |
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| Abstract: | Different densities of Phlenm paniculatum Huds.for wheat yield were studied,the results showed that the best regression model of wheat yield loss and Phlenm paniculatum Huds.density for the Weibull Function was Y=a×{1-(1/(exp(x-b)d/c])},and a=73.212 1,b=9.623 8,c=503.850 1,d=1.018 3.The economic harm permissible level of Phlenm paniculatum Huds.was 3.98%,control in the threshold value was 39.3 plant per square meters. |
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| Keywords: | wheat field Phlenm paniculatum Huds economic threshold control in index |
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