干旱区生态环境知识资源中心(Arid): Grain yields and evapotranspiration dynamics of drip-irrigated maize under high plant density across arid to semi-humid climates

Arid

DOI	10.1016/j.agwat.2020.106726
	Grain yields and evapotranspiration dynamics of drip-irrigated maize under high plant density across arid to semi-humid climates
	Wang, Feng; Xiao, Junfu; Ming, Bo; Xie, Ruizhi; Wang, Keru; Hou, Peng; Liu, Guangzhou; Zhang, Guoqiang; Chen, Jianglu; Liu, Wanmao; Yang, Yunshan; Qin, Anzhen; Li, Shaokun
通讯作者	Li, SK (corresponding author), Shihezi Univ, Coll Agron, Key Lab Oasis Ecoagr Xinjiang Prod & Construct Co, Shihezi 832000, Xinjiang, Peoples R China. ; Qin, AZ (corresponding author), Chinese Acad Agr Sci, Key Lab Crop Water Use & Regulat, Minist Agr & Rural Affairs, Inst Farmland Irrigat, Xinxiang 453002, Henan, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	247
英文摘要	Global water shortage has been a non-negligible issue threatening the sustainable development of agriculture and food security. To alleviate the contradiction between food desire and water limit, a synergistic improvement in grain yields (GY, kg ha(-1)) and water use efficiency (WUE, kg m(-3)) should be achieved. In this study, a combination of mulched drip irrigation and a high-yield maize cultivation system with high plant density (12 x 10(4) plants ha(-1)) was introduced to achieve the dual goal of high yields and water-saving. The study aims at identifying optimal irrigation quotas for three climatic conditions, i.e., Changji, an arid region (annual precipitation 141 mm), Qitai, a semi-arid region (269 mm), and Xinyuan, a semi-humid region (476 mm). Field experiments were carried out to explore dynamics of crop evapotranspiration (ETc, mm) of maize across arid to semi-humid climate, in 2018 and 2019. Six experimental treatments were designed according to local precipitation, including five irrigation levels under a high plant density of 12 x 10(4) plants ha(-1), and a conventional irrigation level under a common planting density of 9 x 10(4) plants ha(-1) taken as the control. There existed a quadratic relationship between GY and irrigation amounts, and between GY and ETc. A negative linear relationship was observed between WUE and irrigation amounts, and between WUE and ETc. Daily water consumption intensity (DWCI, mm d(-1)) of maize increased from VE to VT stage, reached maximum values of 9.3 mm d-1 (Changji), 6.4 mm d(-1) (Qitai), and 5.0 mm d(-1) (Xinyuan), respectively, during VT to R3 stage, and then declined until maturity, indicating that VT to R3 stage is a high water consumption period (water sensitive period) of maize. Generally, the occurrence of maximum DWCI and its sensitive period were delayed with increase of precipitation from arid to semi-humid climate. The optimum irrigation quota recommended was 720 mm for Changji, 540 mm for Qitai, and 180 mm for Xinyuan, respectively. Compared to the control, the recommended irrigation quota saved 11-60% irrigation water, and improved average WUE by 11-65%, without sacrificing maize yields (>15 Mg ha(-1)). We conclude that dual goal of high yields and high WUE of maize can be achieved with high plant density using optimal irrigation quotas and regimes, especially under semi-arid climate.
英文关键词	Mulched drip irrigation Drought indices High yields Water requirement Zea mays L.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000617777000008
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349322
作者单位	[Wang, Feng; Liu, Wanmao; Yang, Yunshan; Li, Shaokun] Shihezi Univ, Coll Agron, Key Lab Oasis Ecoagr Xinjiang Prod & Construct Co, Shihezi 832000, Xinjiang, Peoples R China; [Wang, Feng; Ming, Bo; Xie, Ruizhi; Wang, Keru; Hou, Peng; Liu, Guangzhou; Zhang, Guoqiang; Liu, Wanmao; Yang, Yunshan; Li, Shaokun] Chinese Acad Agr Sci, Inst Crop Sci, Key Lab Crop Physiol & Ecol, Minist Agr & Rural Affairs, Beijing 100081, Peoples R China; [Xiao, Junfu; Qin, Anzhen] Chinese Acad Agr Sci, Key Lab Crop Water Use & Regulat, Minist Agr & Rural Affairs, Inst Farmland Irrigat, Xinxiang 453002, Henan, Peoples R China; [Chen, Jianglu] Inst Agr Sci, Div Xinjiang Prod & Construct Corps 6, Wujiaqu 831300, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Wang, Feng,Xiao, Junfu,Ming, Bo,et al. Grain yields and evapotranspiration dynamics of drip-irrigated maize under high plant density across arid to semi-humid climates[J],2021,247.
APA	Wang, Feng.,Xiao, Junfu.,Ming, Bo.,Xie, Ruizhi.,Wang, Keru.,...&Li, Shaokun.(2021).Grain yields and evapotranspiration dynamics of drip-irrigated maize under high plant density across arid to semi-humid climates.AGRICULTURAL WATER MANAGEMENT,247.
MLA	Wang, Feng,et al."Grain yields and evapotranspiration dynamics of drip-irrigated maize under high plant density across arid to semi-humid climates".AGRICULTURAL WATER MANAGEMENT 247(2021).