| 高产棉花叶面积载荷量与光合生产的关系及对冠层结构的影响 |
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| 引用本文： | 罗宏海,赵瑞海,杨新军,张旺锋.高产棉花叶面积载荷量与光合生产的关系及对冠层结构的影响[J].石河子大学学报,2011,29(1). |
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| 作者姓名： | 罗宏海 赵瑞海 杨新军 张旺锋 |
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| 作者单位： | 新疆兵团绿洲生态农业重点实验室/石河子大学农学院; |
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| 基金项目： | 国家自然科学基金项目(30260051); 国家科技支撑计划项目(2006BAD21B02-1) |
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| 摘 要： | 为了揭示新疆棉花高产机理,探讨提高单产的途径,在棉花膜下滴灌高产条件下采用大田创建高产田和小区控制试验相结合的方法,研究了不同群体条件下棉花叶面积载荷量与光合物质生产的关系及其对冠层结构的调节。结果表明:不同产量水平下,提高叶面积载荷量,有利于在保持较高叶面积指数的基础上,增大平均叶倾角,降低群体散射辐射透过系数,提高群体光截获率,进而增加产量。不同源库大小的条件下,去除1/2叶的处理可使叶面积载荷量增大,但终因光合面积太小,产量下降;去除1/4叶的处理可使叶面积载荷量显著增大,进而提高源叶光合速率,增加14C光合产物向蕾铃运输的比例,最终提高产量。因此,控制叶面积指数在适宜范围内,通过协调关键栽培技术,提高叶面积载荷量,进而培育优良的冠层结构,提高光合生产能力,对实现新疆棉花超高产稳产具有重要意义。
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| 关 键 词： | 叶面积载荷量 光合生产 冠层结构 产量 棉花 |
The Relationship of Sink Capacity of Unit Leaf Area to Photosynthetic Production and Its Regulation Effect on Canopy Structure in High-Yield Cotton |
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| LUO Honghai,ZHAO Ruihai,YANG Xinjun,ZHANG Wangfeng.The Relationship of Sink Capacity of Unit Leaf Area to Photosynthetic Production and Its Regulation Effect on Canopy Structure in High-Yield Cotton[J].Journal of Shihezi University(Natural Science),2011,29(1). |
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| Authors: | LUO Honghai ZHAO Ruihai YANG Xinjun ZHANG Wangfeng |
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| Institution: | LUO Honghai,ZHAO Ruihai,YANG Xinjun,ZHANG Wangfeng(The Key Laboratory of Oasis Eco-Agriculture,Xinjiang Production and Construction Croup/Gollege of Agriculture,Shihezi University,Shihezi 832003,China) |
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| Abstract: | To expoler the physiological mechanism of high yield cotton in Xinjiang systematically and impove yield further,this study investigated the relationship of sink capacity of unit leaf area to photosynthetic rate,partitioning of 14C-assimilate and regulate effect on canopy structure during flowering and boll-setting stage in high-yield cotton.The results indicated under the different yield level condition,the increasing sink capacity load of unit leaf areas could enhance leaf area index and mean foliage incli... |
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| Keywords: | sink capacity of unit leaf area photosynthetic production canopy structure yield cotton |
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