干旱区生态环境知识资源中心(Arid): Optimizing nitrogen application rate by establishing a unified critical nitrogen dilution curve for maize under different mulching planting patterns

Arid

DOI	10.1016/j.eja.2023.127026
	Optimizing nitrogen application rate by establishing a unified critical nitrogen dilution curve for maize under different mulching planting patterns
	Li, Wenlong; Gu, Xiaobo; Fang, Heng; Zhao, Tongtong; Yin, Rui; Cheng, Zhikai; Tan, Chuandong; Zhou, Zhihui; Du, Yadan
通讯作者	Gu, XB
来源期刊	EUROPEAN JOURNAL OF AGRONOMY
ISSN	1161-0301
EISSN	1873-7331
出版年	2024
卷号	152
英文摘要	Nitrogen (N) nutrition is essential for crop production and a critical N dilution curve (CNDC) could provide a novel strategy for diagnosing plant N status. CNDCs for several crops under different scenarios have been established to optimize N management. However, few studies have been conducted to establish a CNDC for maize (Zea mays L.) under ridge-furrow planting with film mulching over ridges, a planting pattern that has been widely adopted in semi-arid regions due to its improvement in soil water status. In addition, the effects of varied planting patterns on CNDC remain unknown. Therefore, a four-year (2018-2021) field experiment was conducted to establish CNDCs and provide a precise diagnosis of maize N status under different mulching planting patterns. Four N levels (0, 90, 180, and 270 kg N ha-1 for the 2018-2020 period; and 100, 150, 200, and 300 kg N ha-1 for 2021) were applied under three mulching planting patterns: fiat planting without film mulching, ridge-furrow planting with transparent plastic film mulching over ridges, and ridge-furrow planting with biodegradable film mulching over ridges. Taking into consideration of the 95 % credibility intervals, no significant differences in CNDCs and its estimated parameters were observed across years and mulching planting patterns. Therefore, we derived a unified CNDC equation defined as NC = 3.10 W-0.40 based on data obtained from the three mulching planting patterns during the four years. Furthermore, no significant differences were observed in critical N nutrition index thresholds. Consequently, the results supported establishing a universal CNDC model to diagnose maize N status in northwest China. The optimal N application rate for maize to obtain great yield and high N use efficiency in the region was 180-200 kg ha-1. Further studies are required to evaluate CNDC for maize grown under various N fertilizer types, planting patterns, rainfall years, and regions, which would lead to a more precise diagnosis of maize N status and a more accurate N management regime.
英文关键词	Bayesian analysis Critical nitrogen dilution curve Nitrogen management Nitrogen nutrition index Nitrogen diagnosis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001111499400001
WOS关键词	LEAF-AREA INDEX ; NUTRITION INDEX ; WINTER-WHEAT ; DIAGNOSIS
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403689
推荐引用方式 GB/T 7714	Li, Wenlong,Gu, Xiaobo,Fang, Heng,et al. Optimizing nitrogen application rate by establishing a unified critical nitrogen dilution curve for maize under different mulching planting patterns[J],2024,152.
APA	Li, Wenlong.,Gu, Xiaobo.,Fang, Heng.,Zhao, Tongtong.,Yin, Rui.,...&Du, Yadan.(2024).Optimizing nitrogen application rate by establishing a unified critical nitrogen dilution curve for maize under different mulching planting patterns.EUROPEAN JOURNAL OF AGRONOMY,152.
MLA	Li, Wenlong,et al."Optimizing nitrogen application rate by establishing a unified critical nitrogen dilution curve for maize under different mulching planting patterns".EUROPEAN JOURNAL OF AGRONOMY 152(2024).