干旱区生态环境知识资源中心(Arid): Water-Nitrogen Coupling Effect on Drip-Irrigated Dense Planting of Dwarf Jujube in an Extremely Arid Area

Arid

DOI	10.3390/agronomy9090561
	Water-Nitrogen Coupling Effect on Drip-Irrigated Dense Planting of Dwarf Jujube in an Extremely Arid Area
	Lin, En 1,2; Liu, Hongguang 1,2; He, Xinlin 1,2; Li, Xinxin 1,2; Gong, Ping 1,2; Li, Ling 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:9
英文摘要	Hami, Xinjiang, is located in an extremely arid region and jujube is the main economic crop. It is important to adopt dwarf and close-planting technology under drip irrigation and to optimize water and fertilizer management to improve jujube yield and quality. Local 12-year-old jujube trees were treated using two factors of irrigation and fertilization. Three irrigation amounts (520, 700, and 880 mm) and three fertilization levels (248, 318, and 388 kg/hm(2)) were set up in plot experiments. The root system, yield, and quality of jujube were monitored under different irrigation and nitrogen application combinations. The effects on water use efficiency (WUE), nitrogen partial factor productivity (PNP), and economic benefit were analyzed. The water and fertilizer coupling effect of dwarf closely planted jujube was studied by combining multiple regression and spatial analyses. The yield, quality, economic benefits, WUE, and PNP of jujube were significantly affected by irrigation and fertilization. Multiple regression and spatial analyses showed that the highest yield was for irrigation of 700 mm and a nitrogen rate of 340 kg/hm(2). For the maximum net benefit, irrigation was 806 mm and nitrogen was 388 kg/hm(2); correspondingly, for the highest total sugar, values were 688 mm and 362 kg/hm(2); for vitamin C, they were 622 mm and 376 kg/hm(2); for PNP, they were 880 mm and 256.57 kg/hm(2); and for WUE, they were 520 mm and 388 kg/hm(2). A comprehensive evaluation of each index showed that the acceptable irrigation amount for yield, quality, WUE, and net benefit of >= 85% of the maximum value was 600-628 mm, and the nitrogen application rate was 360-372 kg/hm(2). This study provides guidance for the scientific management of water and fertilizer in the drip irrigation and fertilization process of local jujube trees.
英文关键词	extreme drought area dwarf close-planting drip irrigation jujube water-nitrogen coupling
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:000487728800018
WOS关键词	YIELD ; QUALITY ; FERTILIZATION
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214104
作者单位	1.Shihezi Univ, Coll Water 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	Lin, En,Liu, Hongguang,He, Xinlin,et al. Water-Nitrogen Coupling Effect on Drip-Irrigated Dense Planting of Dwarf Jujube in an Extremely Arid Area[J],2019,9(9).
APA	Lin, En,Liu, Hongguang,He, Xinlin,Li, Xinxin,Gong, Ping,&Li, Ling.(2019).Water-Nitrogen Coupling Effect on Drip-Irrigated Dense Planting of Dwarf Jujube in an Extremely Arid Area.AGRONOMY-BASEL,9(9).
MLA	Lin, En,et al."Water-Nitrogen Coupling Effect on Drip-Irrigated Dense Planting of Dwarf Jujube in an Extremely Arid Area".AGRONOMY-BASEL 9.9(2019).