Experiment on Temperature Light Performance of Solar Greenhouse in Severe Winter in Alar City

Temperature and illumination of solar greenhouse in Alar City where the winter vegetable was planted were determined.The results showed that there were very good heat preservation and light-taking performance in the solar greenhouse,but in the cold season,temperature and light conditions in the solar greenhouse could not meet the needs of thermophilic,photophilous fruits,vegetables and crops,etc.The temperature in the solar greenhouse was influenced by the outside temperature,and both of them took on the curve correspondence relations.Inside and outside the greenhouse,the luminous intensity change were synchronous,the amplitude variation inside the greenhouse was less than that of outside the greenhouse.