| 杂草对作物产量损失的经验模型 |
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| 引用本文： | 刘德立,J. V. Lovett,I. R. Johnson.杂草对作物产量损失的经验模型[J].植物保护学报,1991,18(4):371-377. |
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| 作者姓名： | 刘德立 J. V. Lovett I. R. Johnson |
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| 作者单位： | 西南农业大学农学系，澳大利亚新英格兰大学，澳大利亚新英格兰大学 重庆 |
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| 摘 要： | 本文讨论一个描述杂草为害导致作物产量损失的经验模型。该模型能反映杂草与作物产量损失的关系特征,其参数具有显著的生物学意义。用不同来源的试验资料进行测试,结果表明,模型具有较高的预测可信度,其参数所反映的生物学意义与实际情况基本一致。
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| 关 键 词： | 杂草 作物 产量损失 经验模型 |
A MODEL FOR RELATIONSHIPS BETWEEN CROP-YIELD LOSSES AND WEED DENSITIES |
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| Liu Deli,J. V. Lovett and I. R. Johnson.A MODEL FOR RELATIONSHIPS BETWEEN CROP-YIELD LOSSES AND WEED DENSITIES[J].Acta Phytophylacica Sinica,1991,18(4):371-377. |
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| Authors: | Liu Deli J V Lovett and I R Johnson |
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| Institution: | Department of Agronomy, Southwest Agricultural University, Chongqing,Department of Agronomy and Soil Science, University of New England, Australia and Department of Agronomy and Soil Science, University of New England, Australia |
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| Abstract: | In this paper,an empirical model feflecting the hyperbolic relation-ship between weed density and crop-yield loss is presentted for simu-lating the dynamic damage of weed to crop.Some experimental data fromdifferent area and on different crop has been used to validate themodel.It appears that the model can provide a good fitting to the cropyield loss-weed density relationship,and the parameters in the modelare able to reflect the interference features of weed to crop. |
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| Keywords: | empirical model crop-yield losses intra-specific interference inter-spicific interference |
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