干旱区生态环境知识资源中心(Arid): Multiple sources characteristics of root water uptake of crop under oasis farmlands in hyper-arid regions

Arid

DOI	10.1016/j.agwat.2022.107814
	Multiple sources characteristics of root water uptake of crop under oasis farmlands in hyper-arid regions
	Zhang, Yongyong; Wu, Shaoxiong; Kang, Wenrong; Tian, Zihan
通讯作者	Zhang, YY
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2022
卷号	271
英文摘要	Understanding the water use strategy of crops is important for maintaining the stability of agricultural production and improving water use efficiency (WUE). Affected by a variety of water sources and hyper-arid climate, the characteristics of root water uptake (RWU) in seed maize are extremely complicated but under-estimated in oasis farmlands with shallow groundwater. We hypothesized that isotope (delta 2H and delta 18O) measurements over three years coupled with a MixSIAR model would reveal the characteristics of RWU in maize. Stable water isotopes in oasis farmlands were continuously observed from 2019 to 2021. Over the growing season, the soil matrix potential increased with soil depth. The isotopes in stem water had high similarity to groundwater, irrigation water, and soil water. The contributions of soil water in 0-20 cm, 20-40 cm, 40-60 cm, and 60-100 cm soil layers to RWU in maize were 29.7%, 12.2%, 14.8%, and 43.3%, respectively. From the jointing stage to the dough stage, the depth of RWU in maize was from shallow to deep; but after the dough stage, the depth of RWU in maize was from deep to shallow. Crops might prefer to absorb more groundwater and irrigation water in oasis farmlands with shallow groundwater. This study provides insights into crop water uptake and agricultural water management in hyper-arid regions.
英文关键词	Desert-oasis regions MixSIAR model Seed maize Stable water isotope Water use efficiency
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000830892300005
WOS关键词	USE STRATEGIES ; WINTER-WHEAT ; SUMMER MAIZE ; ISOTOPE ; EVAPOTRANSPIRATION ; RESOURCE ; CONSUMPTION ; LYSIMETER ; PLANTS ; SOILS
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/2XILL650/391630
推荐引用方式 GB/T 7714	Zhang, Yongyong,Wu, Shaoxiong,Kang, Wenrong,et al. Multiple sources characteristics of root water uptake of crop under oasis farmlands in hyper-arid regions[J],2022,271.
APA	Zhang, Yongyong,Wu, Shaoxiong,Kang, Wenrong,&Tian, Zihan.(2022).Multiple sources characteristics of root water uptake of crop under oasis farmlands in hyper-arid regions.AGRICULTURAL WATER MANAGEMENT,271.
MLA	Zhang, Yongyong,et al."Multiple sources characteristics of root water uptake of crop under oasis farmlands in hyper-arid regions".AGRICULTURAL WATER MANAGEMENT 271(2022).