The temperature adaptability of solar greenhouse vegetable in winter in Guanzhong and Northern Shaanxi

Abstract-To analyse the vegetable adaptability of greenhouse, the temperature and humidity of greenhouse was measured in Yulin, Yan´an and Yangling solar greenhouse. The effective temperature and single factor ecological distance were introduced to evaluate the temperature adaptability of vegetable. The results showed that the relative humidity inside the greenhouse was the largest, and the diurnal temperature variation was the minimum in Yangling. It was not propitious to the growth of fruit vegetables. The temperature adaptability of leafy vegetables was greater than fruit vegetables. The temperature adaptability of fruit vegetables was tomato >; cucumber>; capsicum>; Eggplant; The temperature adaptability of leafy vegetables was leaf lettuce >; celery>; cabbage>; greengrocery. The temperature adaptation index of 8 kinds of vegetables was the best in Yangling. The temperature in Yangling can meet the requirement of cucumber, tomato and other temperature-resistant vegetables growth. The temperature wais low in January in Yulin and Yan´an, so thermal insulation and other measures need to be strengthened to meet the cucumber, tomato and other temperature-resistant vegetables growth requirement.