Results 21 to 30 of about 648,893 (289)

Effects of Uplift Resistance on Continuous-Pipe-Foundation of Single-Span Plastic Greenhouse by Steel Plate Pipe Connector

Agriculture, 2022
The single-span plastic greenhouses are affected by strong winds which generate uplift resistance causing the bending of members, damage to protective films, and damage to crops.
Myeonghwan Kim
doaj   +1 more source

Study on the Cooling Effect of Double-Layer Spray Greenhouse

Agriculture, 2023
Greenhouses provide suitable environmental conditions for plant growth. Double-layer plastic greenhouses are often used in many regions to ensure normal crop growth during winter since single-layer plastic greenhouses have poor insulation.
Jihang Xu, Weitao Bai, Jian Wang, Zhihui Mu, Weizhen Sun, Boda Dong, Kai Song, Yalan Yang, Shirong Guo, Sheng Shu, Yu Wang   +10 more
doaj   +1 more source

Solar radiation model and optimization of asymmetric large-span externally insulated plastic greenhouses. [PDF]

PLoS One
To improve the light environment of asymmetric large-span externally insulated plastic greenhouses, a solar radiation model that considers the projection path equations of the insulation quilts and validated the model was established.
Wang C, Liu K, Ma H, Li T, Wang S, Zhang D, Wei M.   +6 more
europepmc   +2 more sources

Characteristics of Plastic Greenhouse High-Temperature and High-Humidity Events and Their Impacts on Facility Tomatoes Growth

Frontiers in Earth Science, 2022
Because of their relatively simple structures, plastic greenhouses in southern China have poor resistance to adverse external weather conditions. Adverse meteorological condition inside the greenhouse is one of the main limiting factors for facility crop
Qi Zhang, Xinyu Zhang, Zaiqiang Yang, Qinqin Huang, Rangjian Qiu   +4 more
doaj   +1 more source

Fans For Greenhouses

EDIS, 2018
Fans are used in processing applications involved with drying, ventilating, heating, cooling, aspirating, elevating, and conveying. Processing and other agricultural activities requiring fans are greatly increasing.
D. E. Buffington, R. A. Bucklin, R. W. Henley, D. B. McConnell   +3 more
doaj   +1 more source

Evaluating the Effect of Cover Materials on Greenhouse Microclimates and Thermal Performance

Agronomy, 2022
This study compared and analyzed changes in the microclimate and thermal environment inside single-span greenhouses covered with a single layer of plastic film, polycarbonate (PC), and glass.
Hyung-Kweon Kim, Si-Young Lee, Jin-Kyung Kwon, Yong-Hyeon Kim   +3 more
doaj   +1 more source

Environmental control of greenhouse and plastic cover. II

Engei Gakkai zasshi, 1967
1. Climatic factors were measured in large gutter-connected greenhouses which are equipped with the cooling system as pad-and fan in Kusatsu City of Shiga Prefecture.2. The greenhouses measured were so different from one another in their structures, aeration systems and crops, that the temperature and wind velocity were studied for three to four ...
Y. KAWAKATSU, T. NAKAO
openaire   +3 more sources

THC Yield and Greenhouse Cover Materials: Optimizing the Profit of Medical Cannabis

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2021
Even though Delta-9-tetrahydrocannabinol (THC) is a psychoactive substance, studies indicate that it has therapeutic properties. Moreover, the modification in Greece legislation regarding the legalization of cannabis has resulted in new business ...
Maria KOUSOYLA, Stella BRAKATSOULA, Christina NIKAKI, Dimitrios BILALIS, Alexandros TATARIDAS, Ioannis ROUSSIS, Ioanna KAKABOUKI, Stella KARYDOGIANNI, Panayiota PAPASTYLIANOU, Antonios MAVROEIDIS   +9 more
doaj   +1 more source

RESEARCH ON WIND PRESSURE DISTRIBUTION OF PLASTIC GREENHOUSES IN VALLEY TOPOGRAPHY

, 2022
As the wind pressure distribution on plastic greenhouses in valley areas is different from that of greenhouses on plains, it is necessary to find out the variation trend of the wind pressure coefficient on greenhouses in the valley areas.
Guifeng He (8137335), Jing Xu (15337), Zhikang Hu (8562300), Xiaoying Ren (8049452)   +3 more
core   +1 more source

Remote Sensing of Agricultural Greenhouses and Plastic-Mulched Farmland: An Analysis of Worldwide Research [PDF]

, 2020
The total area of plastic-covered crops of 3019 million hectares has been increasing steadily around the world, particularly in the form of crops maintained under plastic-covered greenhouses to control their environmental conditions and their growth ...
Nemmaoui, Abderrahim, Jiménez Lao, Rafael, Aguilar Torres, Fernando José, Aguilar Torres, Manuel Ángel   +3 more
core   +2 more sources