干旱区生态环境知识资源中心(Arid): Effects of various soil water potential thresholds for drip irrigation on soil salinity, seed cotton yield and water productivity of cotton in northwest China

Arid

DOI	10.1016/j.agwat.2023.108172
	Effects of various soil water potential thresholds for drip irrigation on soil salinity, seed cotton yield and water productivity of cotton in northwest China
	Xiao, Chao; Ji, Qingyuan; Zhang, Fucang; Li, Yi; Fan, Junliang; Hou, Xianghao; Yan, Fulai; Liu, Xiaoqiang; Gong, Kaiyuan
通讯作者	Zhang, FC ; Li, Y ; Fan, JL
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2023
卷号	279
英文摘要	As a vital cotton producing region, the arid and semi-arid region of northwest China has faced increasing scarcity of water resources, and the associated decline in irrigation capacity has necessitated the adoption of more efficient irrigation methods in this region. A two-year field experiment was carried out in Northern Xinjiang of China in 2020 and 2021 to explore the effects of various soil water potential (SWP) thresholds (-10,-20,-30 and-40 kPa) for drip irrigation on soil salinity, soil temperature, cotton growth, seed cotton yield, harvest index and water productivity. The results showed that with the decrease of SWP threshold, soil moisture in the 0-20 cm soil layer decreased gradually, while soil salinity decreased first and then increased. Soil salt content was lowest under -20 kPa, and soil salinity was controlled below the root zone. SWP thresholds of-10 and-20 kPa could well control soil temperature during the whole growing season of cotton to reduce heat stress. Higher SMP was beneficial to plant height, leaf area and stem diameter, but it did not significantly improve seed cotton yield. The effects of soil moisture, heat and salt on growth indexes and seed cotton yield were quantitatively evaluated based on the path analysis. The number of cotton boll was the most influential growth variable on seed cotton yield, and soil salt content had the most significant influence on boll number. High-frequency irrigation (-10 kPa) was not conducive to reducing soil salinity, increasing boll number and increasing seed cotton yield. Drip irrigation with SWP threshold of-20 kPa was recommended for drip-irrigated cotton under film mulch in Northern Xinjiang. This study can provide scientific basis for irrigation management of cotton in saline-alkali regions.
英文关键词	Water productivity Seed cotton yield Path analysis Cotton Soil temperature Soil salinity
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:000931180800001
WOS关键词	USE EFFICIENCY ; CROP ESTABLISHMENT ; FIBER DAMAGE ; ARID REGION ; ROOT-GROWTH ; BT-COTTON ; TEMPERATURE ; QUALITY ; WHEAT ; STRESS
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/2XILL650/395044
推荐引用方式 GB/T 7714	Xiao, Chao,Ji, Qingyuan,Zhang, Fucang,et al. Effects of various soil water potential thresholds for drip irrigation on soil salinity, seed cotton yield and water productivity of cotton in northwest China[J],2023,279.
APA	Xiao, Chao.,Ji, Qingyuan.,Zhang, Fucang.,Li, Yi.,Fan, Junliang.,...&Gong, Kaiyuan.(2023).Effects of various soil water potential thresholds for drip irrigation on soil salinity, seed cotton yield and water productivity of cotton in northwest China.AGRICULTURAL WATER MANAGEMENT,279.
MLA	Xiao, Chao,et al."Effects of various soil water potential thresholds for drip irrigation on soil salinity, seed cotton yield and water productivity of cotton in northwest China".AGRICULTURAL WATER MANAGEMENT 279(2023).