干旱区生态环境知识资源中心(Arid): Optimizing cotton yield through appropriate irrigation water salinity: Coordinating above- and below-ground growth and enhancing photosynthetic capacity

Arid

DOI	10.1016/j.eja.2024.127095
	Optimizing cotton yield through appropriate irrigation water salinity: Coordinating above- and below-ground growth and enhancing photosynthetic capacity
	Ma, Zhanli; Liu, Jian; Wen, Yue; Zhang, Jinzhu; Yin, Feihu; Guo, Li; Li, Wenhao; He, Jing; Ma, Jiaying; Liang, Yonghui; Wang, Zhenhua
通讯作者	Wang, ZH
来源期刊	EUROPEAN JOURNAL OF AGRONOMY
ISSN	1161-0301
EISSN	1873-7331
出版年	2024
卷号	154
英文摘要	The employment of brackish water for irrigation holds considerable potential for addressing the shortfall of freshwater resources in arid regions. It is crucial to discern the impact of salinity on agricultural output and its mechanisms when irrigating with brackish water. Here, a two-year field experiment (2021-2022) was undertaken in Xinjiang, China to assess the effects of water salinity (0.85 g L-1, CK; 3 g L-1, S1; 5 g L-1, S2; and 8 g L-1, S3) on the growth, photosynthesis, carbon accumulation, and cotton yield under mulched drip irrigation. Results showed that, compared to CK, the S1 treatment led to increased biomass, the boll capacity of the root system (BCR), and a reduced root-to-shoot ratio (R/S). In addition, the S1 treatment enhanced the net photosynthetic rate (Pn) and chlorophyll content (Chl) of cotton, enhancing the total carbon accumulation of boll (Cboll) and consequently, the seed cotton yield. However, the higher salinity treatments, S2 and S3, demonstrated a detrimental impact on these indicators. In comparison to CK, the S1 treatment showed a yield increase of 5.92% and 4.76% in the respective two years, yet the S2 and S3 treatments showed a yield decrease of 5.55-15.77% and 5.06-16.74%. The application of a structural equation model (SEM) elucidated a direct effect of photosynthetic parameters (Pn and Chl) and biomass characteristics (total biomass, R/S, and BCR) on yield. These factors also indirectly modulated seed cotton yield through the Cboll/Croot ratio. These results suggest that irrigation with brackish water of 3 g L-1 optimizes cotton production by coordinating crop growth of aboveground and underground parts. This study offers practical strategies for the cotton industry to enhance yields under brackish water irrigation.
英文关键词	Irrigation water salinity Cotton productivity Coordinated growth Photosynthetic capacity Mulched drip irrigation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001166336100001
WOS关键词	DRIP IRRIGATION ; GRAIN-YIELD ; NITROGEN ; ROOT ; BRACKISH ; LEAF
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/2XILL650/403690
推荐引用方式 GB/T 7714	Ma, Zhanli,Liu, Jian,Wen, Yue,et al. Optimizing cotton yield through appropriate irrigation water salinity: Coordinating above- and below-ground growth and enhancing photosynthetic capacity[J],2024,154.
APA	Ma, Zhanli.,Liu, Jian.,Wen, Yue.,Zhang, Jinzhu.,Yin, Feihu.,...&Wang, Zhenhua.(2024).Optimizing cotton yield through appropriate irrigation water salinity: Coordinating above- and below-ground growth and enhancing photosynthetic capacity.EUROPEAN JOURNAL OF AGRONOMY,154.
MLA	Ma, Zhanli,et al."Optimizing cotton yield through appropriate irrigation water salinity: Coordinating above- and below-ground growth and enhancing photosynthetic capacity".EUROPEAN JOURNAL OF AGRONOMY 154(2024).