浙南单体塑料大棚内冬季温光性能特征研究

为了解浙南地区塑料大棚冬季温光环境特点,以8 m单体塑料大棚为研究对象,对大棚内外进行连续气温与光照监测及典型天气温光分析比较。结果表明：试验期间大棚内南端面光照优于北端面,增幅范围在6.33%~26.68%;典型天气下大棚内的透光性约占露地的61.44%~67.38%,晴天大棚透光性较阴天与小雨天气分别提高3.67%、9.66%。试验期间内露地夜间最低与最高温度分别为5.88℃和13.38℃,分别较大棚内南北端面降低17.51%、16.67%和3.43%、2.54%;4种典型天气下大棚内夜间平均温度较露地增幅4.47%~8.91%。

The Characteristics of Temperature and Light Properties of Single Plastic Greenhouse in Winter of Southern Zhejiang

Continuous temperature and light monitoring and typical weather temperature and light analysis were carried out inside and outside of the 8 m single plastic greenhouse for determining the characteristics of temperature and light environment of plastic greenhouse in winter in southern Zhejiang. The results showed that the light intensity of the south of the greenhouse was better than that in the north during the experiment with an increase range of 6.33%-26.68%. The light transmittance in the greenhouse in typical weather accounted for 61.44%-67.38% of the open field. The light transmittance of the greenhouse in sunny days was 3.67% and 9.66% higher than that in cloudy days and light rain days, respectively. During the experiment, the lowest and highest night temperature was 5.88℃ and 13.38℃ respectively in open field, which were 17.51%, 16.67%, 3.43% and 2.54% lower than those of the north and south of the greenhouse. The average night temperature in the greenhouse increased by 4.47% to 8.91% compared with that in the open field under four typical weather conditions.