Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.17660/ActaHortic.2011.893.51 |
Evaluation of Microclimatological Parameters inside a Screenhouse Used in Arid Regions | |
Al-Mulla, Y. A.1; Al-Balushi, M.1; Al-Rawahy, M.2; Al-Makhmary, S.2; Al-Raisy, F.2 | |
通讯作者 | Al-Mulla, Y. A. |
会议名称 | International Symposium on High Technology for Greenhouse Systems (GreenSys) |
会议日期 | APR 30, 2011 |
会议地点 | Quebec City, CANADA |
英文摘要 | Previous studies on this type of protected agriculture showed that there is a need for a more detailed evaluation of the microclimatological parameters inside the screenhouse in addition to their influence on the planted crops, especially in arid region countries like Oman, and that was the main objective of this work. A Quonset screenhouse was equipped with 35 sensors during spring 2008 measuring solar radiation, relative humidity, air temperature, ground temperature, leaf temperature, wind speed and direction at different locations and heights inside the screenhouse. The inside air temperature, with an average of 22 degrees C, was uniformly distributed inside the screenhouse but it was slightly warmer than outside by 1.7 degrees C. Upper leaf temperature was higher than the middle and lower part of the canopy during midday (12:00 pm and 4:00 pm) whereas, lower leaf temperature exceeds the upper one during the night time of the day. Relative humidity, with an average of 55.5%, was also uniformly distributed inside the screenhouse and it was more humid than outside by 7.3%. Although ambient wind speed was generally calm throughout the time of the study (ranges from 4.8 to 7.7 km h(-1)), it did not exceed 3.9 km h(-1) inside the screenhouse. 'Luna' cucumber cultivar was planted inside the screenhouse in two soilless cultures, wood (WDS) and date palm (DPS) straws. The WDS planted cucumber obtained a higher LAI than the DPS one. Maximum LAI of 3.47 for WDS cucumber was obtained in the middle of the screenhouse, while the DPS one obtained 2.24 at the same location. Although both WDS and DPS planted cucumber had the same average of height, the WDS was in general taller than the DPS. Moreover, WDS produced 14% more yield and also 11% more fruits/plant than the DPS planted cucumber. |
英文关键词 | arid regions luna cucumber microclimate Oman sensors soilless culture screenhouse |
来源出版物 | INTERNATIONAL SYMPOSIUM ON HIGH TECHNOLOGY FOR GREENHOUSE SYSTEMS: GREENSYS2009 |
ISSN | 0567-7572 |
出版年 | 2011 |
期号 | 893 |
页码 | 509-516 |
EISBN | 978-90-66050-47-1 |
出版者 | INT SOC HORTICULTURAL SCIENCE |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | Oman |
收录类别 | CPCI-S |
WOS记录号 | WOS:000305385800051 |
WOS类目 | Horticulture |
WOS研究方向 | Agriculture |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/300041 |
作者单位 | 1.Sultan Qaboos Univ, Coll Agr & Marine Sci, Dept Soils Water & Agr Engn, POB 34, Al Khoud 123, Oman; 2.Minist Agr, Directorate Gen Agr Res & Live Stock, Seeb, Oman |
推荐引用方式 GB/T 7714 | Al-Mulla, Y. A.,Al-Balushi, M.,Al-Rawahy, M.,et al. Evaluation of Microclimatological Parameters inside a Screenhouse Used in Arid Regions[C]:INT SOC HORTICULTURAL SCIENCE,2011:509-516. |
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