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塑料大棚内温度高、湿度大、光照弱、通风有限,目前还没有更好的办法调节棚内的温、湿度来适应蔬菜作物各生育阶段的要求。我们针对普遍采用的开棚通风,研究了不同开棚方式、不同通风方法以及不同通风面积的降温、降湿效应,其目的在于找出好的通风办法。一、不同开棚方式的降温、降湿分析我们研究了底部与顶部配合,腰部与顶部配合两种开棚通风方式的降温、降湿效应。从观测结果可以看出:底部与顶部配合通风对中午14时和日平均的降温效果不如腰部与顶部配合通风好,而对日最高、最低的降温效
Plastic greenhouse temperature, humidity, light, ventilation is limited, there is no better way to regulate shed temperature and humidity to adapt to the requirements of various stages of the growth of vegetable crops. We aimed at the widely used shed ventilation, studied different shedding methods, different ventilation methods and different ventilation area of cooling, dehumidification effect, the purpose is to find a good ventilation method. First, the different ways of shedding cooling, dehumidification analysis We studied the bottom and the top with the waist and top with two open shed ventilation cooling, dehumidification effect. It can be seen from the observation results that the ventilation effect between the bottom and the top is not as good as that at 14:00 and the daily average cooling effect is better than the waist and top, and the highest and lowest cooling effect on Japan