干旱区生态环境知识资源中心(Arid): Optimizing irrigation and planting density of spring maize under mulch drip irrigation system in the arid region of Northwest China

Arid

DOI	10.1016/j.fcr.2021.108141
	Optimizing irrigation and planting density of spring maize under mulch drip irrigation system in the arid region of Northwest China
	Guo, Qing; Huang, Guanmin; Guo, Yuling; Zhang, Mingcai; Zhou, Yuyi; Duan, Liusheng
通讯作者	Zhou, YY ; Duan, LS (corresponding author), China Agr Univ, Coll Agron & Biotechnol, Minist Educ, Engn Res Ctr Plant Growth Regulator, Beijing 100193, Peoples R China.
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2021
卷号	266
英文摘要	The limited availability of water resources severely restricts agricultural development in the semiarid and arid regions of Northwest China. A two-year field experiment was conducted to investigate the effects of irrigation and planting density on the soil water content (SWC), growth and development, yield, water use efficiency (WUE) and economic benefits of spring maize in arid areas under mulch drip irrigation system. The optimized combination of irrigation and planting densities for high grain yield, WUE and net return were obtained by multiple regression analysis. Experiment included three irrigation treatments (HI: 450 mm; MI: 337.5 mm; LI: 225 mm) and four planting densities (D1: 75,000 plants ha-1; D2: 90,000 plants ha-1; D3: 105,000 plants ha-1; D4: 120,000 plants ha-1). The results showed that the reduction of irrigation decreased SWC, leaf area index (LAI), aboveground biomass, yield and evapotranspiration (ET), but improved WUE. HI and MI were significantly different from LI. Increasing planting density increased LAI and ET, but reduced SWC and aboveground biomass. Planting density had significant effects on yield and WUE, which differed in both years. The overall yield, WUE and net return were greater than the two-year average of HI-D1 under an irrigation amount of 271.9?500.2 mm and a planting density range of 7.1?14.3 x 104 plants ha-1. MI-D2, with 25 % reduced irrigation, increased the two-year average yield, WUE and net return by 5.2 %, 20.2 % and 27.2 %, respectively, compared to HI-D1. Therefore, irrigation of 337.5 mm at a medium planting density of 90,000 plants ha-1 under mulch drip irrigation is recommended for spring maize production in the drylands of Northwest China in our research.
英文关键词	Irrigation Planting density Yield Water use efficiency Economic returns
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000641445500002
WOS关键词	WATER-USE EFFICIENCY ; ZEA-MAYS L. ; RADIATION-USE EFFICIENCY ; LOESS PLATEAU ; GRAIN-YIELD ; DEFICIT IRRIGATION ; ECONOMIC RETURNS ; SEMIARID AREAS ; DRY-MATTER ; SOIL-WATER
WOS类目	Agronomy
WOS研究方向	Agriculture
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350217
作者单位	[Guo, Qing; Huang, Guanmin; Guo, Yuling; Zhang, Mingcai; Zhou, Yuyi; Duan, Liusheng] China Agr Univ, Coll Agron & Biotechnol, Minist Educ, Engn Res Ctr Plant Growth Regulator, Beijing 100193, Peoples R China
推荐引用方式 GB/T 7714	Guo, Qing,Huang, Guanmin,Guo, Yuling,et al. Optimizing irrigation and planting density of spring maize under mulch drip irrigation system in the arid region of Northwest China[J]. 中国农业大学,2021,266.
APA	Guo, Qing,Huang, Guanmin,Guo, Yuling,Zhang, Mingcai,Zhou, Yuyi,&Duan, Liusheng.(2021).Optimizing irrigation and planting density of spring maize under mulch drip irrigation system in the arid region of Northwest China.FIELD CROPS RESEARCH,266.
MLA	Guo, Qing,et al."Optimizing irrigation and planting density of spring maize under mulch drip irrigation system in the arid region of Northwest China".FIELD CROPS RESEARCH 266(2021).