日光温室气温变化规律的研究

为了探明冬春季日光温室内气温的变化规律，于山东莱芜进行温室内小气候观测试验，对各月份不同天气条件下温室内气温变化规律进行了分析，结果表明，12、1和2月份的最低气温出现时间为08时，阴天会推迟1小时，且最低气温均在番茄的生长界限温度以下；3和4月份的最低气温出现时间依次为07和06时；最低气温值均在阴天最高，多云天次之，晴天最低；温室内外气温相关性阴天时最大，多云天次之，晴天最小，且昼夜差异较大，白天相关性小于夜间；严冬季节温室内增温效果显著。

A study on change laws of air temperature

The micro-climate experiment was carried out in Laiwu city in Shandong Province to study the change laws of inside temperatures in the solar greenhouse.The change laws under different weather conditions every month have been analyzed detailedly,the results showed as follows:(1)In December,January and February,the minimum inside air temperatures below the lowest temperature that tomatoes can grow appeared on 8 o'clock,and the time was postponed one hour in cloudy days.The time was followed by 7 o'clock and 6 o'clock in March and April.The minimum temperature was the highest during clear days,followed by cloudy days and overcast days.(2)The most significance on correlation between outside and inside air temperatures occurred during overcast days,followed by cloudy days and clear days.The correlationship of the daytime is more significant than that of the nighttime.(3)The greenhouse effect is significant during winter.