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Microclimate characteristics and evapotranspiration estimates of cucumber plants in a newly developed sunken solar greenhouse
Year:
2020
Source of publication :
Water (Switzerland)
Authors :
Tanny, Josef
;
.
Volume :
12
Co-Authors:

Liu, H. - Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College ofWater Sciences, Beijing Normal University, Beijing, 100875, Chinaץ  

Yin, C. - College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China

 Hu, X. - School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
Tanny, J. - Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Centre, P.O. B 15159 Rishon, LeZion, 7505101, Israel; HIT-Holon Institute of Technology, POB 305, Holon, 5810201, Israel

 Tang, X. - Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing, 100875, China

Facilitators :
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0
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Total pages:
1
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Abstract:

In north China, vegetables are always cultivated in conventional solar greenhouses (SG), however, these structures cannot be used during most of the winter due to extremely low temperatures. In this study, a new type of a solar greenhouse named sunken solar greenhouse (SSG), where the inside soil surface is lowered 1-2 m below outside and the back wall is 5-8 m width at the bottom and 1.5-2 m on top, was investigated. Inside climatic variables were recorded and compared with those outside during seven cucumber cultivation seasons. Crop evapotranspiration (ETc) was estimated using the Penman-Monteith method. Results show that inside solar radiation was reduced by approximately 40%, however days with a daily maximum inside temperature higher than 20 °C accounted for 80-90% of the days during the winter, which greatly enhanced cucumber fruit production compared to common SGs. The reference crop evapotranspiration (ETo) inside the SSG was reduced by 27% compared to outside. The estimated ETc was generally lower than 4 mm day-1, which resulted in a basal crop coefficient of 0.83. In conclusion, the SSG is environmental-friendly, preferable for winter vegetable cultivation in north China, and can be useful for other regions of the world with cold winter conditions.

Note:
Related Files :
climatic variables
Crop evapotranspiration
Crops
Cucumis sativus
evapotranspiration
greenhouses
vegetables
Show More
Related Content
More details
DOI :
10.3390/w12082275
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
50004
Last updated date:
02/03/2022 17:27
Creation date:
14/09/2020 17:36
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Scientific Publication
Microclimate characteristics and evapotranspiration estimates of cucumber plants in a newly developed sunken solar greenhouse
12

Liu, H. - Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College ofWater Sciences, Beijing Normal University, Beijing, 100875, Chinaץ  

Yin, C. - College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China

 Hu, X. - School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
Tanny, J. - Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Centre, P.O. B 15159 Rishon, LeZion, 7505101, Israel; HIT-Holon Institute of Technology, POB 305, Holon, 5810201, Israel

 Tang, X. - Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing, 100875, China

Microclimate characteristics and evapotranspiration estimates of cucumber plants in a newly developed sunken solar greenhouse

In north China, vegetables are always cultivated in conventional solar greenhouses (SG), however, these structures cannot be used during most of the winter due to extremely low temperatures. In this study, a new type of a solar greenhouse named sunken solar greenhouse (SSG), where the inside soil surface is lowered 1-2 m below outside and the back wall is 5-8 m width at the bottom and 1.5-2 m on top, was investigated. Inside climatic variables were recorded and compared with those outside during seven cucumber cultivation seasons. Crop evapotranspiration (ETc) was estimated using the Penman-Monteith method. Results show that inside solar radiation was reduced by approximately 40%, however days with a daily maximum inside temperature higher than 20 °C accounted for 80-90% of the days during the winter, which greatly enhanced cucumber fruit production compared to common SGs. The reference crop evapotranspiration (ETo) inside the SSG was reduced by 27% compared to outside. The estimated ETc was generally lower than 4 mm day-1, which resulted in a basal crop coefficient of 0.83. In conclusion, the SSG is environmental-friendly, preferable for winter vegetable cultivation in north China, and can be useful for other regions of the world with cold winter conditions.

Scientific Publication
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