干旱区生态环境知识资源中心(Arid): Tomato Evapotranspiration, Crop Coefficient and Irrigation Water Use Efficiency in the Winter Period in a Sunken Chinese Solar Greenhouse

Arid

DOI	10.3390/w14152410
	Tomato Evapotranspiration, Crop Coefficient and Irrigation Water Use Efficiency in the Winter Period in a Sunken Chinese Solar Greenhouse
	Yang, Li; Liu, Haijun; Tang, Xiaopei; Li, Lun
通讯作者	Liu, HJ
来源期刊	WATER
EISSN	2073-4441
出版年	2022
卷号	14 期号:15
英文摘要	In the Northern China Plain (NCP), sunken solar greenhouses (SSG) are now increasingly being used for vegetable cultivation in winter due to low winter temperatures. Investigating plant transpiration and determining crop coefficients are helpful when developing irrigation scheduling and improving crop growth. In this study, a three-season experiment was conducted in a commercial tomato SSG to investigate changes in microclimate, sap flow (SF), photosynthesis traits and plant physiological parameters, and to calculate the crop coefficient and evaluate the irrigation efficiency using current irrigation management practices. Results show that the average transmissivity from top plastic covers was 0.69, and the inside temperature increased by approximately 10 degrees C in November and 15-18 degrees C in December, which guaranteed the growth of tomatoes in winter. The leaf photosynthesis rate (P-n) is linearly related to radiation, however, a concave quadratic function is a better fit for P-n and VPD, with the highest P-n at approximately 1.0 kPa VPD; leaf transpiration is positively and linearly related to both radiation and VPD. Therefore, increasing greenhouse transmissivity and maintaining an internal VPD of approximately 1 kPa could produce a high leaf P-n and low transpiration concurrently. Daily total SF was linearly correlated with solar radiation, VPD and temperature with determination coefficients of 0.87-0.96, 0.89-0.91 and 0.62-0.84, respectively. Correcting the slope of SF to radiation with VPD (SF = (0.12 + 0.14VPD)Rs), R-2 increased by 0.08, and the root mean square error and relative error decreased by 0.047 mm day(-1) and 6.53%, respectively. Therefore, this integrated equation is recommended to estimate daily tomato transpiration when plant height is approximately 1.5 m, and the leaf area index (LAI) is between 2 and 2.5. During the fruit expansion and ripening period, the average basal crop coefficients (K-cb) for greenhouse tomatoes in winter was between 0.99 and 1.11. The irrigation efficiency increased from 0.3 in the first season to 0.6-0.69 in the second and third seasons when the tensiometer method was used. Therefore, using the tensiometer method to guide tomato irrigation could markedly improve irrigation efficiency in greenhouses.
英文关键词	greenhouse tomato sap flow microclimate crop coefficient irrigation water use efficiency
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000839348300001
WOS关键词	VAPOR-PRESSURE DEFICIT ; SAP-FLOW ; CANOPY TRANSPIRATION ; ANTIOXIDANT ACTIVITY ; DRIP FERTIGATION ; FRUIT-QUALITY ; ARID REGION ; LEAF-AREA ; SOIL ; YIELD
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394818
推荐引用方式 GB/T 7714	Yang, Li,Liu, Haijun,Tang, Xiaopei,et al. Tomato Evapotranspiration, Crop Coefficient and Irrigation Water Use Efficiency in the Winter Period in a Sunken Chinese Solar Greenhouse[J],2022,14(15).
APA	Yang, Li,Liu, Haijun,Tang, Xiaopei,&Li, Lun.(2022).Tomato Evapotranspiration, Crop Coefficient and Irrigation Water Use Efficiency in the Winter Period in a Sunken Chinese Solar Greenhouse.WATER,14(15).
MLA	Yang, Li,et al."Tomato Evapotranspiration, Crop Coefficient and Irrigation Water Use Efficiency in the Winter Period in a Sunken Chinese Solar Greenhouse".WATER 14.15(2022).