Spatial distribution of light interception by different plant population densities and its relationship with yield

文献类型： 外文期刊

第一作者： Huiyun Xue

作者： Huiyun Xue;Yingchun Han;Yabing Li;Guoping Wang;Lu Feng;Zhengyi Fan;Wenli Du;Beifang Yang;Cougui Cao;Shuchun Mao

作者机构：

关键词： Cotton;Canopy;Light interception (LI);Spatial distribution;Yield

期刊名称：FIELD CROPS RESEARCH （ 影响因子：5.224； 五年影响因子：6.19 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Light interception (LI) by the canopy is an important environmental factor that determines dry matter production and crop development. Using a geostatistical sampling-based method, we studied the spatial distribution of LI at different points, in different layers and profiles and in the entire cotton canopy. The results showed that the LI decreased with increasing height. During early development, the horizontal changes in LI were large for a given vertical point. However, the horizontal changes in LI were smaller during later development. Profile maps of the LI for the six plant densities showed that different Lis occurred during the early growth stage. In addition, the linear regressions between the total accumulated LIs of the different layers and the cottonseed yield revealed that the LI in the bottom layer and in the middle of two cotton rows significantly contributed to the cottonseed yield. Thus, a higher economic yield could be obtained by improving the micro-environment in these two layers. (C) 2015 Elsevier B.V. All rights reserved.

分类号： S

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