Control Means and Data Analysis of Environmental Factors of Facility Watermelon in Beijing Area

摘要

In this study, the environmental indicators (including temperature, light, air relative humidity and CO2 concentration) of facility watermelon in Beijing area were monitored with US350 environmental sensor during the whole growth period. The results showed that in the solar greenhouses in Beijing area, the average air temperature was in the range of 10.67-29.95 ℃ during the whole growth period of watermelon, the average soil temperature ranged from 16.92 to 35.10 ℃, the average light intensity changed from 268.37 to 13842.60 lx, the average air relative humidity ranged from 52.40％ to 94.26％, and the average CO2 concentration was in the range of 455-631 ml/m3; and in the spring greenhouses in Beijing area, the variation range of average air temperature was 14.05-29.84 ℃ during the whole growth period of watermelon, the average soil temperature ranged from 17.47 to 28.12 ℃, the average light intensity was in the range of 55.80-12858.64 lx, the average soil moisture content ranged from 18.19％-34.56％, the variation range of average air relative humidity was 20.72％-96.26％, and the average CO2 concentration was in the range of 351-544 ml/m3.