| The Photosynthesis Characteristics of the Winter Wheat Colony of different Density |
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| 作者姓名： | 由海霞 |
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| 作者单位： | 西北农林科技大学 陕西杨凌 |
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| 基金项目： | 农业科技跨越计划项目“面条专用小麦生产技术与产业化示范”(农跨2000-6) |
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| 摘 要： | 通过系统分析不同密度冬小麦群体的光合作用特性表明,密度时冬小麦群体的结构、光照特征、单叶光合生理性能均有显著的调节功能,从而显著影响产量水平的发挥。群体透光率作为群体叶面积系数和叶倾角对光环境作用的综合表现而主要由群体的叶面积系数影响,且合理的群体大小是保证具有较高的净光合速率和蒸腾速率而获得高产的基础。试验范围内以密度105kg/hm2群体的透光特性、旗叶光合生理性能和产量各因子表现最佳而产量最高,是最佳的密度水平,其次是135kg/hm2。
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| 关 键 词： | 密度 透光特性 光合生理性能 冬小麦 |
The Photosynthesis Characteristics of the Winter Wheat Colony of different Density |
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| Authors: | You Haiia |
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| Abstract: | Based on the network analysis of the photosynthesis characteristic of the winter wheat colony of different density,this paper indicated that the density can remarkably influence the colony structure, the light distribution and the Photosynthesis characteristics of simple leaf, thus influence the yield level. The light through rate of the colony was mainly influenced by the LAI, though it was a comprehensive behavior of LAI and QL on the function of light. The rational size of colony was the main foundation of to obtain higher Pn, Tr and yield. The treatment of 105 kg/hm2 was the best density level of obtained highest yield in this experiment for its better light distribution and photosynthesis characteristic and yield factors, and the secondly was the density of 135kg/hm2. |
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| Keywords: | Density Light Distribution Photosynthesis characterisdcs Winter Wheat |
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