干旱区生态环境知识资源中心(Arid): How does film mulching modify available energy, evapotranspiration, and crop coefficient during the seed-maize growing season in northwest China?

Arid

DOI	10.1016/j.agwat.2020.106666
	How does film mulching modify available energy, evapotranspiration, and crop coefficient during the seed-maize growing season in northwest China?
	Zhao, Yin; Mao, Xiaomin; Shukla, Manoj K.; Tian, Fei; Hou, Mengjie; Zhang, Tong; Li, Sien
通讯作者	Mao, XM (corresponding author), China Agr Univ, 17 Qinghua East Rd, Beijing 100083, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	245
英文摘要	Plastic film mulching has been widely applied in farmland around the world, which could complicate the mass and energy exchange between soil surface and atmosphere. Although previous studies suggested that film mulching reduced available energy (R-n - G) and crop evapotranspiration (ET) in some crop growth stages, it was unclear how film mulching would influence energy partition, crop ET and crop coefficient (K-c) during the entire growing season. A two-year field experiment in a mulched (FM) and a non-mulched (NM) seed-maize field under drip irrigation was conducted in Shiyang River Basin of northwest China to quantify the effects of FM on energy balance components, ET and K-c, by measuring the net radiation (R-n), the soil heat flux (G), the evaporation (E) on ground surface, the transpiration (7), and the soil water content along the soil profile. In particular, ET was obtained by a water balance method and a three-temperature (3T) model combined with remote sensing. Results showed that FM significantly decreased daily R-n and daily G before jointing stage (i.e., the initial stage), which caused 19.0% reduction of the daily R-n - G. The effects of FM on R-n, G and R-n - G diminished after jointing stage (i.e., the crop development, middle and late stages). The reduction of R-n - G under FM treatment during the initial stage was accompanied with the decrease of ET during the initial stage, consequently 6.2% less total ET in the entire seed-maize growing season was recorded compared with NM treatment. FM had a significant effect on the partition of ET components, and E and T were 0.52 and 1.10 times of those under NM treatment, respectively. FM significantly reduced K e during the initial stage (Kc-ini) by 55.3%, while in the middle (Kc-mid) and late (Kc-end) stages, it decreased by 5.7% and 9.7%, respectively, compared with NM treatment. The K e varied with the leaf area index (LAT) following the parabolic relationship for both treatments. A structural equation model (SEM) showed that among the soil and crop factors, FM and soil temperature (ST) were the main factors affecting R-m - G, ET and K-c during the initial stage; while during the crop development, middle and late stages, ST and LAI were the main factors affecting R-n - G and ET, and K e was mainly affected by LAI. SEM further confirmed that the FM impact was more significant during the initial stage than during the crop development, middle and late stages.
英文关键词	Film mulching Evapotranspiration Net radiation Soil heat flux Available energy Crop coefficient
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000607291600003
WOS关键词	WATER-USE EFFICIENCY ; PLASTIC MULCH ; INTERANNUAL VARIATION ; ARID REGION ; BALANCE ALGORITHM ; DRIP IRRIGATION ; LOESS PLATEAU ; FIELD ; TRANSPIRATION ; YIELD
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	中国农业大学 ; New Mexico State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347643
作者单位	[Zhao, Yin; Mao, Xiaomin; Tian, Fei; Hou, Mengjie; Zhang, Tong; Li, Sien] China Agr Univ, Ctr Agr Water Res China, Beijing 100083, Peoples R China; [Zhao, Yin; Mao, Xiaomin; Tian, Fei; Hou, Mengjie; Zhang, Tong; Li, Sien] China Agr Univ, Shiyanghe Expt Stn, Wuwei 733000, Peoples R China; [Shukla, Manoj K.] New Mexico State Univ, Plant & Environm Sci, Las Cruces, NM 88003 USA
推荐引用方式 GB/T 7714	Zhao, Yin,Mao, Xiaomin,Shukla, Manoj K.,et al. How does film mulching modify available energy, evapotranspiration, and crop coefficient during the seed-maize growing season in northwest China?[J]. 中国农业大学, New Mexico State University,2021,245.
APA	Zhao, Yin.,Mao, Xiaomin.,Shukla, Manoj K..,Tian, Fei.,Hou, Mengjie.,...&Li, Sien.(2021).How does film mulching modify available energy, evapotranspiration, and crop coefficient during the seed-maize growing season in northwest China?.AGRICULTURAL WATER MANAGEMENT,245.
MLA	Zhao, Yin,et al."How does film mulching modify available energy, evapotranspiration, and crop coefficient during the seed-maize growing season in northwest China?".AGRICULTURAL WATER MANAGEMENT 245(2021).