干旱区生态环境知识资源中心(Arid): Effects of nitrogen application rates and irrigation regimes on grain yield and water use efficiency of maize under alternate partial root-zone irrigation

Arid

DOI	10.1016/S2095-3119(20)63205-1
	Effects of nitrogen application rates and irrigation regimes on grain yield and water use efficiency of maize under alternate partial root-zone irrigation
	Qi Dong-liang; Hu Tian-tian; Song Xue
通讯作者	Hu, TT
来源期刊	JOURNAL OF INTEGRATIVE AGRICULTURE
ISSN	2095-3119
出版年	2020
卷号	19 期号:11 页码:2792-2806
英文摘要	Faced with the scarcity of water resources and irrational fertilizer use, it is critical to supply plants with water and fertilizer in a coordinated pattern to improve yield with high water use efficiency (WUE). One such method, alternate partial root-zone irrigation (APRI), has been practiced worldwide, but there is limited information on the performance of different irrigation regimes and nitrogen (N) rates under APRI. The objectives of this study were to investigate the effects of varying irrigation regimes and N rates on shoot growth, grain yield and WUE of maize (Zea mays L.) grown under APRI in the Hexi Corridor area of Northwest China in 2014 and 2015. The three N rates were 100,200 and 300 kg N ha(-1), designated N-1, N-2 and N-3, respectively. The three irrigation regimes of 45-50%, 60-65% and 75-80% field capacity (FC) throughout the maize growing season, designated W-1, W-2 and W-3, respectively, were applied in combination with each N rate. The results showed that W-2 and W-3 significantly increased the plant height, stem diameter, crop growth rate, chlorophyll SPAD value, net photosynthetic rate (P-n) biomass, grain yield, ears per ha, kernels per cob, 1 000-kernel weight, harvest index, evapotranspiration and leaf area index (LAI) compared to W, at each N rate. The N-2 and N-3 treatments increased those parameters compared to N, in each irrigation treatment. Increasing the N rate from the N-2 to N-3 resulted in increased biomass and grain yield under 1AI 3 while it had no impact on those under the W, and W-2 treatments. The W3N3 and W2N2 and W2N3 treatments achieved the greatest and the second-greatest biomass and grain yield, respectively. Increasing the N rate significantly enhanced the maximum LAI (LAI at the silking stage) and P-n, under W-3, suggesting that the interaction of irrigation and fertilizer N management can effectively improve leaf growth and development, and consequently provide high biomass and grain yield of maize. The W2N2 , W2N3 and W3N3 treatments attained the greatest WUE among all the treatments. Thus, either 60-65% FC coupled with 200-300 kg N ha(-1) or 75-80% FC coupled with 300 kg N ha(-1) is proposed as a better pattern of irrigation and nitrogen application with positive regulative effects on grain yield and WUE of maize under APRI in the Corridor area of Northwest China and other regions with similar environments. These results can provide a basis for in-depth understanding of the mechanisms of grain yield and WUE to supply levels of of water and nitrogen.
英文关键词	deficit irrigation nitrogen fertilization leaf area index net photosynthetic rate harvest index Zea mays
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000579857800019
WOS关键词	RADIATION USE EFFICIENCY ; ZEA-MAYS L. ; DEFICIT IRRIGATION ; WINTER-WHEAT ; CROP COEFFICIENT ; SEED PRODUCTION ; DRYLAND AREAS ; HARVEST INDEX ; LOESS-PLATEAU ; ARID REGION
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326906
作者单位	[Qi Dong-liang] Yangtze Univ, Engn Res Ctr Ecol & Agr Use Wetland, Minist Educ, Jingzhou 434025, Peoples R China; [Hu Tian-tian; Song Xue] Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Qi Dong-liang,Hu Tian-tian,Song Xue. Effects of nitrogen application rates and irrigation regimes on grain yield and water use efficiency of maize under alternate partial root-zone irrigation[J]. 西北农林科技大学,2020,19(11):2792-2806.
APA	Qi Dong-liang,Hu Tian-tian,&Song Xue.(2020).Effects of nitrogen application rates and irrigation regimes on grain yield and water use efficiency of maize under alternate partial root-zone irrigation.JOURNAL OF INTEGRATIVE AGRICULTURE,19(11),2792-2806.
MLA	Qi Dong-liang,et al."Effects of nitrogen application rates and irrigation regimes on grain yield and water use efficiency of maize under alternate partial root-zone irrigation".JOURNAL OF INTEGRATIVE AGRICULTURE 19.11(2020):2792-2806.