干旱区生态环境知识资源中心(Arid): Effects of Phosphorus Application in Different Soil Layers on Root Growth, Yield, and Water-Use Efficiency of Winter Wheat Grown Under Semi-Arid Conditions

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	Effects of Phosphorus Application in Different Soil Layers on Root Growth, Yield, and Water-Use Efficiency of Winter Wheat Grown Under Semi-Arid Conditions
	Kang Liyun; Yue Shanchao; Li Shiqing
来源期刊	Journal of Integrative Agriculture
ISSN	2095-3119
出版年	2014
卷号	13 期号:9 页码:2028-2039
英文摘要	Deep phosphorus application can be a usefull measure to improve crops performance in semi-arid regions, but more knowledge of both its general effects and effects on specific crops is required to optimize treatments. Thus, the aims of this study were to evaluate the effects of phosphorus (P) application at different soil layers on root growth, grain yield, and water-use efficiency(WUE) of winter wheat grown on the semi-arid Loess Plateau of China and to explore the relationship between root distribution and grain yield. The experiment consisted of four P treatments in a randomized complete block design with three replicates and two cultivars: one drought-sensitive (Xiaoyan 22, XY22) and one drought-tolerant (Changhan 58, CH58). The four P treatments were no P (control, CK), surface P (SP), deep P (DP), and deep-band P application (DBP). CH58 produced larger and deeper root systems, and had higher grain yields and WUE, under the deep P treatments (DP and DBP) than under SP, clearly showing that deep P placement had beneficial effects on the drought-tolerant cultivar. In contrast, the grain yield and root growth of XY22 did not differ between DP or DBP and SP treatments. Further, root dry weight (RW) and root length (RL) in deep soil layer (30-100 cm) were closely positively correlated with grain yield and WUE of CH58 (but not XY22), highlighting the connections between a well-developed subsoil root system and both high grain yield and WUE for the drought-tolerant cultivar. WUE correlated strongly with grain yield for both cultivars (r=0.94, P<0.001). In conclusion, deep application of P fertilizer is a practical and feasible means of increasing grain yield and WUE of rainfed winter wheat in semi-arid regions, by promoting deep root development of drought-tolerant cultivars.
英文关键词	water stress phosphorus application soil layers grain yield root growth water-use efficiency
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5242381
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335398
作者单位	Kang Liyun, Northwest Agriculture and Forestry University, Sate Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Yangling, Shanxi 712100, China.; Yue Shanchao, Northwest Agriculture and Forestry University, Sate Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Yangling, Shanxi 712100, China.; Li Shiqing, Northwest Agriculture and Forestry University, Sate Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Yangling, Shanxi 712100, China.
推荐引用方式 GB/T 7714	Kang Liyun,Yue Shanchao,Li Shiqing. Effects of Phosphorus Application in Different Soil Layers on Root Growth, Yield, and Water-Use Efficiency of Winter Wheat Grown Under Semi-Arid Conditions[J],2014,13(9):2028-2039.
APA	Kang Liyun,Yue Shanchao,&Li Shiqing.(2014).Effects of Phosphorus Application in Different Soil Layers on Root Growth, Yield, and Water-Use Efficiency of Winter Wheat Grown Under Semi-Arid Conditions.Journal of Integrative Agriculture,13(9),2028-2039.
MLA	Kang Liyun,et al."Effects of Phosphorus Application in Different Soil Layers on Root Growth, Yield, and Water-Use Efficiency of Winter Wheat Grown Under Semi-Arid Conditions".Journal of Integrative Agriculture 13.9(2014):2028-2039.