| Rainwater harvesting with heliogreenhouse and its utilization with high efficiency |
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| DOI：10.7606/j.issn.1000-7601.2003.01.03 |
| Key Words: catchment heliogreenhouse WUE cucumbe r tomato |
| Author Name | Affiliation | | WEI Xing-hu | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou 730000,China | | XIE Zhong-kui | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou 730000,China | | LI xiao-yan | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou 730000,China | | WANG Ya-jun | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou 730000,China | | ZHANG Zhi-shan | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou 730000,China |
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| Abstract: |
| The experiments with different catchment measures of cleaning weeds, abandoned film covering, red sand covering and plastic covering on heliogreenhouse were conducted in the semi arid regions prone to drought of Loess plateau to determine the catchment efficiency (runoff/rainfall) and the costs of harve sted water. Meanwhile, the study of different irrigation volume of harve sted water for tomato and cucumber in heliogreenhouse was conducted to determine the optimal irrigation volume. The results showed that the catchment efficiency of plastic covering on heliogreenhouse was as high as 85%, that of abandoned fi lm covering was 45.4%, and that of cleaning weeds was only 8.2%. As for the cost per unic volume of harvested water, the catchment measures could be put in order as: cleaning weeds >red sand covering >abandoned film covering > plastic covering on heliogreenhouse. In the regions with 300 mm precipitation, with the catchments of 450 m2 of plastic covering on heliogreenhouse and 600 m2 of abandoned film coverin g, the total volume of harvested water was 197 m3, which could meet the year ly need of irrigation norm of cucumber in one heliogreenhouse (0.045 hm2). |
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