干旱区生态环境知识资源中心(Arid): Evaluation of nitrogen mineralization under various irrigation water qualities and nitrogen application rates for mulched drip irrigation in an arid region

Arid

DOI	10.1002/ird.2743
	Evaluation of nitrogen mineralization under various irrigation water qualities and nitrogen application rates for mulched drip irrigation in an arid region
	Ma, Chao; Wang, Jun; Li, Jiusheng
通讯作者	Wang, J ; Li, JS
来源期刊	IRRIGATION AND DRAINAGE
ISSN	1531-0353
EISSN	1531-0361
出版年	2022
卷号	71 期号:5 页码:1129-1145
英文摘要	Understanding the interactive effects of irrigation water quality and fertilization on nitrogen mineralization (N-min) and accurately predicting N-min are of great importance for the secure and efficient utilization of brackish water in arid regions. A pot experiment was conducted to determine the N-min under different drip irrigation water salinities and nitrogen application rates and to modify the nitrogen mineralization potential (N-0) and mineralization rate constants (k) of the first-order kinetic equation of N-min. An in situ field experiment was conducted to validate the modified equation. The results showed that the amounts of N-min for water salinities of 1.27, 3.03, and 4.90 g L-1 were 58.9, 76.1, and 45.4 kg ha(-1), respectively. N-min was stimulated when the soil salinities were lower than 6.6, 6.1 and 3.9 g kg(-1) for nitrogen application rates of 255, 315 and 375 kg ha(-1), respectively. Nitrogen application significantly reduced N-min. When the nitrogen application rate increased to 375 kg ha(-1), the net N-min rate remained lower, and the effects of salinity on N-min were attenuated. The N-min model with modified N-0 and k values was developed considering the impacts of soil organic nitrogen, nitrogen application rate, and soil salinity. Model testing indicated that the modified model provided an acceptable estimation of N-min under field conditions. It will be helpful for developing rational fertilization strategies of drip irrigation with brackish water in arid regions.
英文关键词	brackish water fertigation micro-irrigation nitrogen salinity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000836150100001
WOS关键词	SOIL-NITROGEN ; ORGANIC-MATTER ; PLASTIC MULCH ; FERTILIZATION ; TEMPERATURE ; PHOSPHORUS ; SALINITY ; CHLORIDE ; FRESH ; SALTS
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/2XILL650/393224
推荐引用方式 GB/T 7714	Ma, Chao,Wang, Jun,Li, Jiusheng. Evaluation of nitrogen mineralization under various irrigation water qualities and nitrogen application rates for mulched drip irrigation in an arid region[J],2022,71(5):1129-1145.
APA	Ma, Chao,Wang, Jun,&Li, Jiusheng.(2022).Evaluation of nitrogen mineralization under various irrigation water qualities and nitrogen application rates for mulched drip irrigation in an arid region.IRRIGATION AND DRAINAGE,71(5),1129-1145.
MLA	Ma, Chao,et al."Evaluation of nitrogen mineralization under various irrigation water qualities and nitrogen application rates for mulched drip irrigation in an arid region".IRRIGATION AND DRAINAGE 71.5(2022):1129-1145.