【摘要】 本文对佳木斯地区塑料大棚的内外小气候进行了分析研究,结果表明:在三种典型天气下,晴天中午大棚内外最高气温差异达20.8℃,棚内最高气温为36.5℃,超过作物生长发育的最适宜温度范围;雨夹雪天内外温差最小,最高温度差异6.4℃。夜间大棚内外最低气温差异在0.65℃～1.75℃之间,其中,晴天和多云天傍晚(18:00～20:00)棚内温度低于棚外。三种典型天气下大棚内均维持较高的湿度(80%～99%),远高于棚外的湿度(50%～80%)。大棚内的光强随着外界光强的增加而增加,雨夹雪天气的透光率最高可达74%,晴天最小为69%。更多还原

【Abstract】 The microclimate inside and outside of the plastic greenhouse under three typical weather was analyzed in this paper.The results showed that the maximum temperature difference was 20.8℃between outside and inside the greenhouse an noon in clear day,the maximum temperature was 36.5℃inside the greenhouse,which exceeding the optimum temperature limits of crop growth.The temperature difference was least in sleet day,which was 6.4℃.The minimum temperature difference was between 0.65℃～1.75℃at night,and the temperature inside was lower than outside in the evening(18:00pm to 20:00pm)in clear day and cloudy day.In the three typical weather,the air humidity in the awning(80%～99%)was more higher than outside(50%～80%).Meanwhile the light intensity inside was increased with outside,the maximum transmittance can attain 74%in sleet day,and minimum transmittance can attain 69%in clear day.更多还原