干旱区生态环境知识资源中心(Arid): Water-Nitrogen Coupling and Multi-Objective Optimization of Cotton under Mulched Drip Irrigation in Arid Northwest China

Arid

DOI	10.3390/agronomy9120894
	Water-Nitrogen Coupling and Multi-Objective Optimization of Cotton under Mulched Drip Irrigation in Arid Northwest China
	Li, Xinxin 1,2; Liu, Hongguang 1,2; He, Xinlin 1,2; Gong, Ping 1,2; Lin, En 1,2
通讯作者	Liu, Hongguang
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2019
卷号	9 期号:12
英文摘要	Cotton is the most important cash crop in Xinjiang but low utilization rate of water and fertilizer is restricting healthy development of this industry. At present, there is a lack of water and nitrogen management optimization methods based on multi-objectives of cotton water use efficiency (WUE), nitrogen use efficiency (NUE), yield, and income. A continuous field experiment was conducted during 2017-2018 to study the effects of water-nitrogen coupling on cotton growth, WUE, NUE, nitrogen partial factor productivity, yield, quality, and economic benefits under drip irrigation in northern Xinjiang. Using multiple regression and spatial analyses, the water and nitrogen management strategy for multi-objective optimization was determined. Three irrigation levels were used-low (I-1), medium (I-2), and full (I-3)-Representing 75%, 87.5%, and 100% of cotton water demand, respectively. The three nitrogen application levels were low (N-1, 210 kg/ha), medium (N-2, 280 kg/ha), and high (N-3, 350 kg/ha), representing 75%, 100%, and 125% of the local nitrogen application, respectively. Among all treatments, the leaf area index, boll weight, dry matter quantity and yield reached respective maxima of 4.43 m(2)/m(2), 4.73 g, 16,623 kg/ha, and 6333 kg/ha for the I3N2 treatment. Cotton fiber quality was the best for I-3 irrigation, but too little or too much nitrogen reduced fiber quality. The economic benefit under I-3 irrigation was 1.93-4.81 times that for I-1. For a single optimization objective, WUE reached a maximum of 1.78 kg/haGreek ano teleiamm for irrigation of 415.80 mm and nitrogen application of 295.71 kg/ha; corresponding single maxima follow: NUE of 37.65% for 418.27 mm and 278.57 kg/ha; yield of 6416.42 kg/ha for 470.12 mm and 304.29 kg/ha; and economic benefit of 15,338.55 RMB/ha for 470.12 mm and 307.14 kg/ha. Multiple regression and spatial analysis showed that for irrigation of 430.71-440.12 mm and nitrogen application of 270.95-318.45 kg/ha, the WUE, NUE, yield, and economic benefits of cotton simultaneously exceeded 90% of their maxima, which was an efficient and reasonable water and nitrogen management mode in this location. The results provide a scientific basis for effective integrated management of water and fertilizer in drip irrigation cotton fields in northern Xinjiang.
英文关键词	water-nitrogen coupling water and nitrogen use efficiency yield fiber quality economic benefit
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000507280400048
WOS关键词	USE EFFICIENCY ; YIELD ; XINJIANG ; QUALITY ; AREA
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311197
作者单位	1.Shihezi Univ, Coll ofWater Conservancy & Architectural Engn, Shihezi 832000, Peoples R China; 2.Xinjiang Prod & Construct Grp, Key Lab Modern Water Saving Irrigat, Shihezi 832000, Peoples R China
推荐引用方式 GB/T 7714	Li, Xinxin,Liu, Hongguang,He, Xinlin,et al. Water-Nitrogen Coupling and Multi-Objective Optimization of Cotton under Mulched Drip Irrigation in Arid Northwest China[J],2019,9(12).
APA	Li, Xinxin,Liu, Hongguang,He, Xinlin,Gong, Ping,&Lin, En.(2019).Water-Nitrogen Coupling and Multi-Objective Optimization of Cotton under Mulched Drip Irrigation in Arid Northwest China.AGRONOMY-BASEL,9(12).
MLA	Li, Xinxin,et al."Water-Nitrogen Coupling and Multi-Objective Optimization of Cotton under Mulched Drip Irrigation in Arid Northwest China".AGRONOMY-BASEL 9.12(2019).