干旱区生态环境知识资源中心(Arid): How does plastic film mulching affect crop water productivity in an arid river basin?

Arid

DOI	10.1016/j.agwat.2021.107218
	How does plastic film mulching affect crop water productivity in an arid river basin?
	Zhang, Wang; Tian, Yong; Sun, Zan; Zheng, Chunmiao
通讯作者	Zheng, CM (corresponding author), Southern Univ Sci & Technol, Shenzhen, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	258
英文摘要	Plastic film mulching is a widely used and effective field practice to improve crop water productivity (CWP), especially in arid and semiarid areas. The positive effects of soil mulching on crop yields and CWP have been studied through numerous field experiments and simulations at the site scale. However, few studies have focused on assessing mulching effects at the regional scale. The Zhangye Basin, a typical arid region in the middle Heihe River Basin of northwest China, was chosen as the focus of the present study. The AquaCrop model, a water-driven crop growth model, was first calibrated and validated using field observations from three experimental stations and extended to the regional scale by considering the spatial heterogeneity of soil, meteorology, crop characteristics, irrigation treatment and land use change. Three mulching practices under current irrigation schedules were simulated in the well-validated model for a 20-year period (1995-2015). The results showed that plastic film mulching conserved soil water and significantly reduced nonproductive evaporation. Crop transpiration and yield were enhanced while evapotranspiration decreased under mulching. Compared to no mulching, half-film mulching and major film mulching with 70% coverage effectively improved CWPs at the regional scale, with respective average increases of 7.2% +/- 0.9% and 14.1% +/- 2.2% for seed maize and 4.1% +/- 0.7% and 7.8% +/- 1.0% for spring wheat. The results demonstrated that the impacts of plastic film mulching on CWP varied with crop type and location in relation to water input. The regional evaluation also identified one particular area (Ganzhou) as the most suitable to apply plastic films, especially to seed maize. This study offers a better understanding of agronomic practices and helps improve CWP more effectively, ultimately contributing to water savings and food security in arid regions.
英文关键词	Mulching technology AquaCrop model Regional simulation Seed maize Spring wheat Heihe River Basin
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000707022500008
WOS关键词	GLOBAL SENSITIVITY-ANALYSIS ; DEFICIT IRRIGATED MAIZE ; SIMULATE YIELD RESPONSE ; USE EFFICIENCY ; SURFACE-WATER ; AQUACROP MODEL ; SOIL-WATER ; FOOTPRINT REDUCTION ; SEED PRODUCTION ; CLIMATE-CHANGE
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362387
作者单位	[Zhang, Wang] Peking Univ, Coll Engn, Inst Water Sci, Beijing, Peoples R China; [Tian, Yong; Zheng, Chunmiao] Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen, Peoples R China; [Sun, Zan] Lenovo Res, AI Lab, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Wang,Tian, Yong,Sun, Zan,et al. How does plastic film mulching affect crop water productivity in an arid river basin?[J]. 北京大学,2021,258.
APA	Zhang, Wang,Tian, Yong,Sun, Zan,&Zheng, Chunmiao.(2021).How does plastic film mulching affect crop water productivity in an arid river basin?.AGRICULTURAL WATER MANAGEMENT,258.
MLA	Zhang, Wang,et al."How does plastic film mulching affect crop water productivity in an arid river basin?".AGRICULTURAL WATER MANAGEMENT 258(2021).