Deficit irrigation scheduling of maize in the semi-arid area of northeast China

	Deficit irrigation scheduling of maize in the semi-arid area of northeast China
	Yin, Guanghua 1; Kang, Zhenjun 2,3; Gu, Jian 1; Hao, Liang 1,2; Cong, Peifei 1,2; Liu, Zuoxin 1; Yin, GH
	2013
发表期刊	JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT
ISSN	1459-0255
卷号	11 期号:2 页码:1035-1039
文章类型	Article
摘要	Regulated deficit irrigation (RDI) is one irrigation strategy that can conserve irrigation water and maintain yield. In this paper, we describe an investigation of the timing and efficacy of RDI in an experiment conducted in a waterproof shed on maize in 2009. Various levels of controlled soil water deficit, here expressed as the level of moisture in 30 cm soil layers, including high moisture content (70-75%), middle content (60-65%), and low content (50-55%). Grain yield increased along with evapotranspiration (ET), but the highest level of water use efficiency (WUE) was not consistent with the maximum yield. The amount of irrigation water under deficit conditions was usually between 269.4 mm and 342.7 mm in semi-arid areas. Mild water deficit at the jointing and flowering stages increased WUE by 24.38% and 23.02%, respectively, but decreased WUE by 19.07% at the grain-filling stage. Further differences were observed at the jointing stage (P<0.05). Water consumption intensity (WCI) was used to indicate irrigation timing and degree of RDI. The results of this study indicate that mild water deficit at the jointing stage is a better regulated deficit irrigation strategy for maize in semi-arid regions than deficit at other stages. It may be the optimal irrigation method for increasing maize production in semi-arid areas.; Regulated deficit irrigation (RDI) is one irrigation strategy that can conserve irrigation water and maintain yield. In this paper, we describe an investigation of the timing and efficacy of RDI in an experiment conducted in a waterproof shed on maize in 2009. Various levels of controlled soil water deficit, here expressed as the level of moisture in 30 cm soil layers, including high moisture content (70-75%), middle content (60-65%), and low content (50-55%). Grain yield increased along with evapotranspiration (ET), but the highest level of water use efficiency (WUE) was not consistent with the maximum yield. The amount of irrigation water under deficit conditions was usually between 269.4 mm and 342.7 mm in semi-arid areas. Mild water deficit at the jointing and flowering stages increased WUE by 24.38% and 23.02%, respectively, but decreased WUE by 19.07% at the grain-filling stage. Further differences were observed at the jointing stage (P<0.05). Water consumption intensity (WCI) was used to indicate irrigation timing and degree of RDI. The results of this study indicate that mild water deficit at the jointing stage is a better regulated deficit irrigation strategy for maize in semi-arid regions than deficit at other stages. It may be the optimal irrigation method for increasing maize production in semi-arid areas.
关键词	Water Deficit Water Use Efficiency Regulate Deficit Irrigation Water Consumption Intensity
学科领域	Food Science & Technology
收录类别	SCI
语种	英语
WOS研究方向	Food Science & Technology
WOS类目	Food Science & Technology
WOS记录号	WOS:000322369900001
WOS关键词	WATER-USE EFFICIENCY ; WINTER-WHEAT ; ZEA-MAYS ; YIELD ; GROWTH ; CORN ; MANAGEMENT ; DROUGHT
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16506
专题	海洋生态与环境科学重点实验室
通讯作者	Yin, GH
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Yin, Guanghua,Kang, Zhenjun,Gu, Jian,et al. Deficit irrigation scheduling of maize in the semi-arid area of northeast China[J]. JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT,2013,11(2):1035-1039.
APA	Yin, Guanghua.,Kang, Zhenjun.,Gu, Jian.,Hao, Liang.,Cong, Peifei.,...&Yin, GH.(2013).Deficit irrigation scheduling of maize in the semi-arid area of northeast China.JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT,11(2),1035-1039.
MLA	Yin, Guanghua,et al."Deficit irrigation scheduling of maize in the semi-arid area of northeast China".JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT 11.2(2013):1035-1039.

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