干旱区生态环境知识资源中心(Arid): Evaluation of N nutrition and optimal fertilizer rate for ridge-furrow mulched maize based on critical N dilution curve under different water conditions

Arid

DOI	10.1016/j.agwat.2024.108801
	Evaluation of N nutrition and optimal fertilizer rate for ridge-furrow mulched maize based on critical N dilution curve under different water conditions
	Liu, Pengzhao; Fan, Zhen; Yan, Zinan; Ren, Xiaolong; Zhao, Xining; Zhang, Jianjun; Chen, Xiaoli
通讯作者	Chen, XL
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2024
卷号	296
英文摘要	Optimizing nitrogen (N) management based on the critical N dilution curve (N CDC ) has been proven a precision fertilization strategy to diagnose crop N nutrition status. However, few explorations have been done to establish a N CDC for dryland maize under double ridge-furrow mulching, a planting system that has been widely adopted in semi -arid areas. Moreover, the influences of various rainfall conditions on N CDC remain unclear. Therefore, a 9 -yr field nitrogen fertilization experiment from 2013 to 2021 (five nitrogen rates: 0, 75, 150, 225, and 300 kg N ha -1 , respectively, represented by N0, N0.25, N0.50, N0.75, and N1) was applied to established the N CDC under two planting systems (Flatting without mulching, CK; Double ridge-furrow with mulching, DRFM) and two rainfall types (rainfall season and drought season). Compared with CK, DRFM significantly increased plant dry matter (PDM, 5.5 - 12.8%) and N concentration (4.2 - 6.9%), ultimately improved grain yield (+16.9%), cumulative nitrogen recovery efficiency (C NRE , +9.8%) and crop water productivity (WPc, +26.3%). Rainfall from jointing to silking stage was an important contributor to grain yield. Compared with rainy season, drought season triggered a 51.7% yield loss and 17.1% reduction in NRE, respectively. The N CDC of the CK and DRFM were Nc=36.6xPDM -0.37 and Nc=38.4xPDM -0.36 in rainy season, respectively; the N CDC of the CK and DRFM were Nc =34.5xPDM -0.27 and Nc=37.3xPDM - 0.30 in drought season, respectively. The nitrogen nutrition index (NNI) and plant nitrogen requirement (PNR) based on the N CDC intuitively recorded the N nutritional status. The improved soil micro -environment, PDM and N uptake was recorded in N0.75 (225 kg N ha -1 yr -1 ) under wet season and in N0.50 (150 kg N ha -1 yr -1 ) under drought season, respectively, which brought an increase in crop productivity with a suitable N nutrition status. The findings highlight an accurate and effective method for assessing the N nutrition status of rainfed maize, and optimize fertilization strategy for sustainable production in semi -arid regions.
英文关键词	N accurate management Critical nitrogen dilution curve Ridge-furrow mulched maize Rainfall types
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:001217737200001
WOS关键词	GRAIN-YIELD ; USE EFFICIENCY ; NITROGEN-FERTILIZATION ; PRECIPITATION ; PRODUCTIVITY ; BALANCE ; SYSTEMS ; L.
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/2XILL650/402662
推荐引用方式 GB/T 7714	Liu, Pengzhao,Fan, Zhen,Yan, Zinan,et al. Evaluation of N nutrition and optimal fertilizer rate for ridge-furrow mulched maize based on critical N dilution curve under different water conditions[J],2024,296.
APA	Liu, Pengzhao.,Fan, Zhen.,Yan, Zinan.,Ren, Xiaolong.,Zhao, Xining.,...&Chen, Xiaoli.(2024).Evaluation of N nutrition and optimal fertilizer rate for ridge-furrow mulched maize based on critical N dilution curve under different water conditions.AGRICULTURAL WATER MANAGEMENT,296.
MLA	Liu, Pengzhao,et al."Evaluation of N nutrition and optimal fertilizer rate for ridge-furrow mulched maize based on critical N dilution curve under different water conditions".AGRICULTURAL WATER MANAGEMENT 296(2024).