干旱区生态环境知识资源中心(Arid): Exploring optimal nitrogen management for high yielding maize in arid areas via N-15-labeled technique

Arid

DOI	10.1016/j.geoderma.2020.114711
	Exploring optimal nitrogen management for high yielding maize in arid areas via N-15-labeled technique
	Guo, Ruiying; Miao, Wei; Fan, Chengyun; Li, Xiaogang; Shi, Xiaoyan; Li, Fengmin; Qin, Wei
通讯作者	Guo, RY ; Li, XG
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2021
卷号	382
英文摘要	A quantitative understanding of nitrogen (N) fate is a key for designing an optimal integrated N management for a sustainable high yielding maize system. In this study, we explored optimal N application rates and split using the data of a 2-year field experiment (2014-2015) with labeled N-15. The results showed that, plastic film mulch significantly increased grain yield and aboveground N uptake by 14.4% and 7.4% in 2014, and by 27.9% and 18.8% in 2015, respectively, compared to no mulch treatment. High N rate (375 kg ha(-1)) or high basal N ratio (70%) had no significant effect on grain yield, compared to low N rate of 300 kg ha(-1) with low basal N ratio (40%). 42.5-51.4% of urea N-15 was recovered by maize total biomass (including roots); 26.1-30.7% of applied urea N-15 remained in the 0-160 cm soil layer, and approximately 21.8-27.4% of applied N was unaccounted in the first season (2014). In the second season (2015), 3.8-8.8% of applied urea-N was recovered by succeeding maize. Among all treatments, the split of 120-90-90 with mulch performed best for achieving the high yield and high N use efficiency in irrigated maize system. In conclusion, N fate is significantly affected by mulch, N rate and split in irrigated maize systems in arid area. Plastic mulch significantly increased total maize N recovery and reduced N loss. High N rate and high basal N application led to low N recovery of maize but high N residue in soil. Reducing N input and improving N split are the two effective measures to increase N use efficiency and reduce N loss. High yield and high N use efficiency can be achieved simultaneously with optimal N rate and split, which must consider soil N supply, crop N demand and farming practice as a whole.
英文关键词	Irrigated maize Plastic mulch N split Grain yield N-15 recovery N loss
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000590747200005
WOS关键词	ZEA-MAYS L. ; WATER-USE EFFICIENCY ; PLASTIC-FILM MULCH ; N-USE EFFICIENCY ; AMMONIA VOLATILIZATION ; IRRIGATION WATER ; UREA APPLICATION ; OXIDE EMISSIONS ; HEXI CORRIDOR ; FERTILIZATION
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	兰州大学 ; 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/2XILL650/328003
作者单位	[Guo, Ruiying; Miao, Wei; Fan, Chengyun; Li, Xiaogang; Shi, Xiaoyan; Li, Fengmin] Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China; [Qin, Wei] China Agr Univ, Natl Acad Agr Green Dev, Coll Resources & Environm Sci, Key Lab Plant Soil Interact,Minist Educ, Beijing 100193, Peoples R China
推荐引用方式 GB/T 7714	Guo, Ruiying,Miao, Wei,Fan, Chengyun,et al. Exploring optimal nitrogen management for high yielding maize in arid areas via N-15-labeled technique[J]. 兰州大学, 中国农业大学,2021,382.
APA	Guo, Ruiying.,Miao, Wei.,Fan, Chengyun.,Li, Xiaogang.,Shi, Xiaoyan.,...&Qin, Wei.(2021).Exploring optimal nitrogen management for high yielding maize in arid areas via N-15-labeled technique.GEODERMA,382.
MLA	Guo, Ruiying,et al."Exploring optimal nitrogen management for high yielding maize in arid areas via N-15-labeled technique".GEODERMA 382(2021).