干旱区生态环境知识资源中心(Arid): Determination of crop water use and coefficient in drip-irrigated cotton fields in arid regions

Arid

DOI	10.1016/j.fcr.2019.03.008
	Determination of crop water use and coefficient in drip-irrigated cotton fields in arid regions
	Han, Shumin 1; Yang, Yonghui 1; Li, Huilong 1; Yang, Yanmin 1; Wang, Jiusheng 2; Cao, Jiansheng 1
通讯作者	Yang, Yonghui ; Cao, Jiansheng
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2019
卷号	236 页码:85-95
英文摘要	A 3-year field experiment was conducted in Aksu region in Northwest China to determine crop water use, suitable irrigation mode and actual crop coefficient (K-c) in drip-irrigated cotton fields. In the experiment, 12 non-weighing large lysimeters were used to measure cotton water use under various irrigation modes. Then a micro-lysimeter was placed in each large lysimeter to monitor soil evaporation (E). Adjustments were done for a number of factors (including irrigation, meteorology, plastic mulching, water stress and salinity stress) in order to compare FAO-adjusted K-c(Kc-FAO) with the local actual K-c (Kc-loc). The results showed that: 1) plastic mulching with 0.6 cover ratio and 37.5 mm drip irrigation quota gave a crop water requirement of 536.4 mm; which was suitable for the study area. Also ic.105 were respectively 0.28, 0.97 and 0.31 for early, middle and late growth stages. 2) Kc-FAO generally reflected the trend in Kc-loc for the entire growing season. The suggested 0.1 adjusted coefficient under plastic mulching for the initial growth stage was relatively low, and was most rational for the study area when increased to 0.25. 3) E/ET ratio was low (19.1-24.5%) under mulching treatment and relatively high (27.7-32.7%) under non-mulching treatment. 4) While change in E/ETo ratio was linear or logarithmic, that in T/ETo ratio was a power function of the canopy cover. Also the two rates responded to the interaction effects of canopy cover and soil water content. The results could lay the basis for developing scientific, data-driven water-saving strategies in the study area and elsewhere.
英文关键词	Crop water use Soil evaporation Crop coefficient Drip-irrigatied cotton Arid regions
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000467664500009
WOS关键词	DRYLAND EVAPORATIVE FLUX ; SUBHUMID CLIMATE ; YIELD RESPONSE ; USE EFFICIENCY ; PLASTIC MULCH ; LINT YIELD ; SOIL ; CORN ; STRESS ; GROWTH
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/2XILL650/215633
作者单位	1.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Key Lab Agr Water Resources,Hebei Lab Agr Water S, 286 Huaizhong Rd, Shijiazhuang 050021, Hebei, Peoples R China; 2.Xinjiang Prod & Construct Corps, Agr Div 1, Irrigat Expt Stn, Alaer 843300, Peoples R China
推荐引用方式 GB/T 7714	Han, Shumin,Yang, Yonghui,Li, Huilong,et al. Determination of crop water use and coefficient in drip-irrigated cotton fields in arid regions[J],2019,236:85-95.
APA	Han, Shumin,Yang, Yonghui,Li, Huilong,Yang, Yanmin,Wang, Jiusheng,&Cao, Jiansheng.(2019).Determination of crop water use and coefficient in drip-irrigated cotton fields in arid regions.FIELD CROPS RESEARCH,236,85-95.
MLA	Han, Shumin,et al."Determination of crop water use and coefficient in drip-irrigated cotton fields in arid regions".FIELD CROPS RESEARCH 236(2019):85-95.