干旱区生态环境知识资源中心(Arid): Optimizing water and nitrogen management for saline wasteland improvement: A case study on Suaeda salsa

Arid

DOI	10.1016/j.agwat.2024.108930
	Optimizing water and nitrogen management for saline wasteland improvement: A case study on Suaeda salsa
	Xu, Qiang; Liu, Hongguang; Li, Mingsi; Gong, Ping; Li, Pengfei; Xu, Yibin
通讯作者	Liu, HG
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2024
卷号	301
英文摘要	Cultivating Suaeda salsa (S. salsa) is a promising strategy for the improvement and development of saline wastelands. However, the absence of a scientifically reasonable water and fertilizer management system has long hindered the large-scale improvement and utilization of saline wastelands. Therefore, we performed field experiments for two consecutive years to investigate the effects of water-nitrogen coupling on biomass, forage quality, salt absorption capacity, soil improvement effect, and economic benefits of S. salsa. The optimal water and nitrogen dosages for multi-objective optimization were determined using multiple regression and spatial analysis methods. Three irrigation levels were established for the experiment based on 0.35 (W1), 0.50 (W2), and 0.65 (W3) of the local ETo (Where ETo denotes the reference evapotranspiration calculated based on the FAO-56 recommended by the Food and Agriculture Organization). The three nitrogen application levels were 150 (F1), 250 (F2), and 350 (F3) kg ha-1 in the complete combination design. At the same nitrogen application level, the biomass and economic benefits of the W3 irrigation level were the highest. However, the forage quality, salt absorption capacity, salt reduction, and water productivity at the W3 irrigation level were lower than those at the W2 irrigation level, and the water productivity at the W1 irrigation level was the highest. At the same irrigation level, when the nitrogen application level was F2, the biomass, forage quality, salt absorption, salt reduction, and net profit, all reached their maximum values, and water productivity was the highest at the F3 level. The optimal amount of water and nitrogen applied for each parameter was different, so it was impossible to obtain the highest biomass, forage quality, salt absorption, salt reduction, water productivity, and net profit at the same time. Therefore, multi-objective optimization was needed, the optimal irrigation volume range was 3350.11-3485.97 m3 ha-1, and the nitrogen application rate range was 273.49-326.66 kg ha-1. These findings provide a scientific basis for the large-scale cultivation of S. salsa in extreme arid region, which is helpful for the improvement and utilization of saline-alkali land.
英文关键词	Suaeda salsa Drip irrigation Saline wasteland Nitrogenous fertilizer Forage quality
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:001262738800001
WOS关键词	GROWTH ; L. ; GERMINATION ; FERTILIZER
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/2XILL650/402684
推荐引用方式 GB/T 7714	Xu, Qiang,Liu, Hongguang,Li, Mingsi,et al. Optimizing water and nitrogen management for saline wasteland improvement: A case study on Suaeda salsa[J],2024,301.
APA	Xu, Qiang,Liu, Hongguang,Li, Mingsi,Gong, Ping,Li, Pengfei,&Xu, Yibin.(2024).Optimizing water and nitrogen management for saline wasteland improvement: A case study on Suaeda salsa.AGRICULTURAL WATER MANAGEMENT,301.
MLA	Xu, Qiang,et al."Optimizing water and nitrogen management for saline wasteland improvement: A case study on Suaeda salsa".AGRICULTURAL WATER MANAGEMENT 301(2024).