干旱区生态环境知识资源中心(Arid): The Effects of Soil Salt Stress on the Nitrogen Uptake, Yield Response and Nitrogen Use Efficiency of Cotton in Arid Areas

Arid

DOI	10.3390/agronomy14010229
	The Effects of Soil Salt Stress on the Nitrogen Uptake, Yield Response and Nitrogen Use Efficiency of Cotton in Arid Areas
	Heng, Tong; Ma, Yingjie; Ai, Pengrui; Liu, Zhenyue; Wu, Miao; Liu, Changjiang; Fuller, Mick
通讯作者	Ma, YJ
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2024
卷号	14 期号:1
英文摘要	Soil salinity is a major soil threat, causing severe environmental problems. Soil salt stress limits N uptake and cotton growth, especially in arid regions. However, the mechanism underlying stress tolerance in cotton plants under different soil salinity levels has not been fully elucidated. Therefore, the aim of this study was to examine the proportion and mechanism of cotton N uptake and transport under salt stress using the N-15 isotope labeling technique. Cotton plants were grown in four undisturbed loamy soils (CK, non-salinity, <2 dS m(-1); C1, low salinity, 2-4 dS m(-1); C2, mid-salinity, 4-8 dS m(-1); and C3, high salinity, 8-15 dS m(-1)) in the test pit experiments. The findings indicated that the cotton N uptake was limited by the soil salt stress and total N content, and the cotton N-15 use efficiency decreased by 25-27% with increasing salinity (>4.0 dS m(-1)). The N transported to cotton from the 0-20 cm soil layer in C1 treatment was higher than from the 40-60 cm layer. Furthermore, the cotton fruit cultivated in C1 exhibited a notably elevated dry matter content compared to those cultivated in the control treatment. As the soil salt stress increased from the control treatment to C1, the cotton stems and fruits demonstrated a gradual enhancement in their N uptake and regulatory capabilities, albeit with a slight decrease observed in the leaves. These findings emphasize that soil salt stress diminishes cotton nitrogen uptake and transport, potentially exacerbating nitrogen pollution in the absence of optimized nitrogen fertilization.
英文关键词	soil salt stress N uptake cotton growth N transport dry matter mass
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001151777300001
WOS关键词	GOSSYPIUM-HIRSUTUM L. ; SALINITY ; GROWTH ; PHOTOSYNTHESIS ; PLANT ; WATER
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402734
推荐引用方式 GB/T 7714	Heng, Tong,Ma, Yingjie,Ai, Pengrui,et al. The Effects of Soil Salt Stress on the Nitrogen Uptake, Yield Response and Nitrogen Use Efficiency of Cotton in Arid Areas[J],2024,14(1).
APA	Heng, Tong.,Ma, Yingjie.,Ai, Pengrui.,Liu, Zhenyue.,Wu, Miao.,...&Fuller, Mick.(2024).The Effects of Soil Salt Stress on the Nitrogen Uptake, Yield Response and Nitrogen Use Efficiency of Cotton in Arid Areas.AGRONOMY-BASEL,14(1).
MLA	Heng, Tong,et al."The Effects of Soil Salt Stress on the Nitrogen Uptake, Yield Response and Nitrogen Use Efficiency of Cotton in Arid Areas".AGRONOMY-BASEL 14.1(2024).