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自然通风是决定日光节能温室质能平衡和调节微生态环境平衡的重要因素。为了提高节能日光温室的环境管理和结构设计水平 ,有必要研究防虫网对日光温室通风性能的影响 ,以提高日光温室的绿色产品生产率。因此 ,运用气体衰减示踪技术和数理统计理论 ,研究了日光温室不同形式通风机构的通风性能。试验研究表明在通风口处装设防虫网会显著地减少日光温室的通风率 ,有时可高达 5 0 %。研究还表明 ,无论装设有无防虫网 ,卷膜通风机构比拉膜 (推膜 )通风机构都具有较大的通风率 ,有时前者是后者的 1.4倍左右。
Natural ventilation is an important factor that determines the balance of the energy and quality of solar energy greenhouse and the balance of micro-ecological environment. In order to improve the environmental management and structural design of energy saving solar greenhouse, it is necessary to study the influence of insect net on the ventilation performance of solar greenhouse to improve the green product productivity of solar greenhouse. Therefore, using the gas attenuation tracer technique and mathematical statistics theory, the ventilation performance of different types of ventilation mechanism in solar greenhouse was studied. Experimental studies have shown that installing insect-proof screens at vents can significantly reduce the ventilation rate of daylight greenhouses, sometimes up to 50%. The study also shows that, with or without an insect net, the film ventilation mechanism has a greater ventilation rate than the film (push film) ventilation mechanism, sometimes the former is about 1.4 times the latter.