日光温室连阴寡照的小气候特征、预警指标及防御对策

为了解北京市日光温室发生连阴寡照时的小气候特征、危害成因及对策,根据北京市候中心气象站自动观测的试验数据,经分析2003年11月25日-12月5日日光温室发生连阴寡照的小气候特征,发现连阴期间气温的平均值仅10.7℃,5～15cm地温的平均值为11.0～12.0℃,空气相对湿度的日平均值达97.0%。总结了连阴寡照发生时对正处于结果期的番茄开花授粉的影响,并针对番茄的不同生育期提出相应的连阴寡照灾害气象预警指标及其防御对策。

Local Climate Feature, Warning Indexes and Respond Policy about Continuous Cloudy and Rare Sunshine in Heliogreenhouse

In order to figure out the regulation of local climate that continuous cloudy and rare sunshine occurs and impacts,we analysed climate data from 25th November 2003 to 5th December 2003 related to local climate of continuous cloudy and rare sunshine. The result showed that: during continuous cloudy and rare sunshine period,average air temperature is no more than 10.7℃,average temperature of soil 5cm under ground is 11.0～12.0℃,dayaveraged relative humidity of air can reach 97.0%. At last,we sumarised the influences on pollination of tomatos during mature growth period result in continuous cloudy and rare sunshine and proposed the warning indexes and respond policy.