| 模拟二代棉铃虫为害及密度、果枝数对棉花产量影响的综合模型 |
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| 引用本文： | 毕成鹏,杨奇华,周明牂. 模拟二代棉铃虫为害及密度、果枝数对棉花产量影响的综合模型[J]. 中国农业大学学报, 1990, 0(2): 209-214 |
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| 作者姓名： | 毕成鹏 杨奇华 周明牂 |
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| 作者单位： | 北京农业大学植物保护系; |
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| 基金项目： | 国家“七五”科技攻关资助项目内容 |
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| 摘 要： | 采用两次回归正交组合设计方法研究了不同密度和果枝数情况下,人工模拟去除早期蕾后对棉花产量的影响,建立了相应的数学模型。明确了以上三因素对产量的单独反响及互作效应。讨论了个体生产力和群体生产力以及不同品种间对环境需求的差异性。
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| 关 键 词： | 棉花 群体补偿 二次正交设计 棉铃虫 模型 |
STUDIES ON RESPONSES OF COTTON YIELD TO PLANTING DENSITIES,FRUIT BRANCHES AND REMOVAL OF SQUARES |
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| Bi Chengpeng Yang Qihua Cheo Mingtsang (Dept.of Plant Protection. STUDIES ON RESPONSES OF COTTON YIELD TO PLANTING DENSITIES,FRUIT BRANCHES AND REMOVAL OF SQUARES[J]. Journal of China Agricultural University, 1990, 0(2): 209-214 |
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| Authors: | Bi Chengpeng Yang Qihua Cheo Mingtsang (Dept.of Plant Protection |
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| Affiliation: | Bi Chengpeng Yang Qihua Cheo Mingtsang (Dept.of Plant Protection) |
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| Abstract: | This experiment is conducted with the method of quadratic regres- sion orthogonal design.Responses of cotton yield to three variables(i.e.planting densities,fruit branches and manual removal of squares in early July)are dealt to the variables is developed.The differences of optimal environment to be satisfied between reproductivities of individual and stand,differences among cultivars are discussed. |
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| Keywords: | cotton stand compensation quadratic orthogonal design cotton bollworm model |
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