| 麦田婆婆纳生态经济阈值的研究 |
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| 引用本文： | 李建波.麦田婆婆纳生态经济阈值的研究[J].安徽农业科学,2003,31(6):1062-1062,1064. |
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| 作者姓名： | 李建波 |
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| 作者单位： | 河南省南阳农业学校,河南,南阳,473003 |
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| 摘 要： | 试验结果表明 :麦田婆婆纳对小麦产量有显著影响 ,小麦产量损失 (y)与婆婆纳密度 (x)间呈幂函数关系 ,即y =0 .0 0 49x2 .0 4 6 3。结合现行小麦价格、产量水平和防治费用等因素 ,制定了婆婆纳生态经济阈值
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| 关 键 词： | 小麦 婆婆纳 危害损失 生态经济阈值 |
| 文章编号： | 0517-6611(2003)06-1062-01 |
Studies on Eco-economic Thresholds of Veronica didyma in Wheat Field |
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| Li Jianbo.Studies on Eco-economic Thresholds of Veronica didyma in Wheat Field[J].Journal of Anhui Agricultural Sciences,2003,31(6):1062-1062,1064. |
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| Authors: | Li Jianbo |
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| Abstract: | The results showed the effect of Veronic didyma on wheat yield was significant. The relation between wheat yield loss rate(y) and V.didyma.Tenore density(x) was simulated with the model:y=0.004?9x 2.046?3,combined with wheat price,yield level and cost and the eco-economic threshold of the ontroll of V.didyma were set up . |
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| Keywords: | Wheat Veronica didyma Yield loss Eco-economic threshold |
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