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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (17): 262-266.doi: 10.11924/j.issn.1000-6850.casb15010087

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Preliminary Study on Characteristics of Water Evaporation of Floating Seedling Greenhouse

  

  • Received:2015-01-14 Revised:2015-02-03 Accepted:2015-02-04 Online:2015-07-27 Published:2015-07-27

Abstract: For guiding precise dehumidification in floating seedling greenhouse, based on Penman formula, this paper took the evaporation of the nutrient solution, the evaporation of the medium moisture and the crop transpiration as main recourses of evaporation. The author analyzed and described the suitability of various parameters in particular environment, established the model of evaporation in floating seedling greenhouse. The experiments under artificial lighting condition of sunny and cloudy day showed that the value of model predict was in good agreement to the observed value. The regression estimation standard error was <0.02 kg/(m2·h), the relative error was <8.9% and the coefficient of determination R2 was between 0.92- 0.94. The accuracy of parameter selection of water evaporation model of greenhouse and the prediction of model were both good, and could be a very good guide for dehumidification.