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研究了3种不同薄膜覆盖大棚内小气候因子的变化。研究结果表明,在不同测定日期中,覆盖不同塑料薄膜大棚的棚内外日平均气温和日平均地温变化相似,转光膜1的保温性能优于转光膜2和无滴膜;转光膜1的透光率高于转光膜2和无滴膜,无滴膜的透光率则略高于转光膜2。不论晴天还是阴天,转光膜1均表现出较好的保温与采光性能,而且使用这3种农膜后,大棚内温度和光强变化规律相似。
The changes of microclimate factors in three kinds of greenhouses were studied. The results show that the daily average temperature and daily average ground temperature in different plastic film sheds are similar at different measuring dates, and the thermal insulation performance of the rotary optical film 1 is better than that of the rotary optical film 2 and the drip-free film. The light transmittance is higher than that of the light transmissive film 2 and the non-drip film, and the light transmittance of the non-drip film is slightly higher than that of the light transmissive film 2. No matter sunny or cloudy days, the light transmissive film 1 showed good heat preservation and lighting performance, and after using these three kinds of plastic film, the law of temperature and light intensity in the greenhouse varied.