日光温室气象条件的观测研究

根据对目前普遍用于黄瓜等蔬菜冬季栽培的日光温室内、外的辐射、湿度、CO2浓度等气候要素的测定研究，结果表明：（1）在寒冷季节（1－2月）室内旬平均气温15℃左右，昼夜温度变化在10－30℃之间，不能完全满足黄瓜等蔬菜作物的需要；（2）无论晴天还是阴天室内外气温具有良好的相关性；（3）室内高湿、寡照及CO2的匮乏是制约作物正常生长发育及产量提高的重要因子；（4）在阴天（特别是连阴天）条件下，设法改善室内的光温条件是提高作物产量、增加经济效益的重要措施；（5)室内黄瓜上部叶片光合速率的日变化晴天呈双峰型，阴天则呈单峰型。

OBSERVATION OF AND STUDY ON METEOROLOGICAL CONDITIONS IN SUNLIT PLASTIC GREENHOUSE

According to the observed data of meteorological elements of radiation,temperature,humidity,etc.both inside and outside sunlit green house used to grow vegetables of cucumber and other vegetables.The results show that: (1)In the cold season (from January to February),mean temperature of ten days is about 15℃ and the change range of day and night is 10-30℃ in sunlit greenhouse,it can not fully satisfy the needs of cucumber and other crops;(2)No matter what weather it is ,the temperature of inside and outside the greenhouse is finely correlated;(3)The high humidity,scant light and low CO2 concentration are the important factors that affect the development and output of the crops grown in sunlit greenhouse;(4)In the cloud day,especially continulous overcast,trying to improve the conditions of light and temperature in greenhouse is the important means to increase outpout and economic benefit;(5)In the clear day the diurnal change of upper leaves photosynthetic rate of cucumber is of double peak pattern and in cloud day is single peak pattern.