干旱区生态环境知识资源中心(Arid): Diagnosing crop water status based on canopy temperature as a function of film mulching and deficit irrigation

Arid

DOI	10.1016/j.fcr.2023.109154
	Diagnosing crop water status based on canopy temperature as a function of film mulching and deficit irrigation
	Bo, Liyuan; Guan, Huade; Mao, Xiaomin
通讯作者	Mao, XM
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2023
卷号	304
英文摘要	Film mulching with deficit irrigation is considered an effective way to maximize water productivity and ensure a stable crop yield in the arid region of Northwest China. Deficit irrigation requires precise knowledge of crop response to drought conditions, whereas the canopy temperature and the related crop water stress index (CWSI) monitor crop water stress status. Although canopy temperature and CWSI are closely related to meteorological conditions, cultivation measure and crop growing conditions, it is unclear how film mulching influences the canopy temperature and CWSI. A two-year field experiment was conducted in a maize field with three irrigation levels and different film mulching conditions, i.e., non-mulching, plastic film mulching and biodegradable film mulching treatments, in the Shiyang River Basin of Northwest China. The study aimed to quantify the effects of film mulching on canopy temperature and CWSI, as well as to compare CWSI values obtained from the nearby meteorological station data (CWSI_M), and in situ (field) measurements (CWSI_I). The results showed that plastic film and biodegradable film significantly (p < 0.05) reduced the canopy temperature. The non-water-stressed baseline based on the air temperature and relative humidity of the nearby meteorological station was significantly (p < 0.05) different from those of the field measurement at both the vegetative and the reproductive stages. No significant differences in the non-water-stressed baselines (p > 0.05) were observed among different film mulching conditions. CWSI was calculated using the air temperature and relative humidity data from the aforementioned two sources. The results revealed showing that CWSI_I better correlated with the crop yields of various treatments when compared to CWSI_M. Irrigation scheduling based on CWSI_I could save 83 mm of irrigation amount. This underscore the preference of using CWSI_I (if available) as the primary choice for irrigation scheduling. These findings highlight the impact of meteorological and planting conditions on the canopy temperature, non-water-stressed baseline and CWSI, which may be valuable for diagnosing crop water status more accurately by regional water managers.
英文关键词	Film mulching Meteorological data sources Canopy temperature The non-water-stressed baseline Crop water stress index
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001101035100001
WOS关键词	STRESS INDEX ; PLASTIC MULCH ; SEED PRODUCTION ; USE EFFICIENCY ; MAIZE YIELD ; ARID REGION ; TRANSPIRATION ; WHEAT ; EVAPOTRANSPIRATION ; PRODUCTIVITY
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/2XILL650/396359
推荐引用方式 GB/T 7714	Bo, Liyuan,Guan, Huade,Mao, Xiaomin. Diagnosing crop water status based on canopy temperature as a function of film mulching and deficit irrigation[J],2023,304.
APA	Bo, Liyuan,Guan, Huade,&Mao, Xiaomin.(2023).Diagnosing crop water status based on canopy temperature as a function of film mulching and deficit irrigation.FIELD CROPS RESEARCH,304.
MLA	Bo, Liyuan,et al."Diagnosing crop water status based on canopy temperature as a function of film mulching and deficit irrigation".FIELD CROPS RESEARCH 304(2023).