【摘要】 本文对日光温室内地膜覆盖、稻草覆盖及覆膜滴灌进行了对比实验 ,结果表明 :地膜覆盖能使空气绝对湿度和相对湿度分别降低 1.2hpa和 2 .8%,稻草覆盖分别降低 1.1hpa和 2 .3%,覆膜滴灌分别降低 1.2 5hpa和 3%。在各自的实验阶段 ,露时分别平均减少 1小时 38分、1小时 17分和近 2小时。另外 ,以降湿效果、蔬菜发病情况、降低露时效果、对温度的影响、增产及投入等诸因子做为判别标准 ,对本系列实验的各种降湿措施做了综合评价更多还原

【Abstract】 This article discussed the experiments by adopting plastic mulch, straw covering and drip irrigation. The results are as following; By adopting the measure of plastic mulch, absolute humidity and relative humidity in greenhouse are redused by 1.2 hpa and 2.8% respectively. By abopting straw covering, they are reduced by 1.1 hpa and 2.3% respectively and adopting drip irrigation under the plastic mulch, they are reduced by 1.25 hpa and 3% respectively. In their own experimental period, averagely dew duration is shortened 1 hour and 38 minutes, 1 hour and 17 minutes and nearly 2 hours respectively. Besides, this paper have made the comprehensive evaluation on these several different approaches.更多还原