Winter jujube seedlings are tree species with strong drought and sorghum resistance. They have a wide adaptability to humidity. The annual precipitation is 100-1200 mm, and the annual precipitation is 400-700 mm. The annual precipitation of Zhanhua is less than 100 mm and the height is 1160 mm, which can produce normal growth results. Jujube water will not die for more than 30 days. There are differences in humidity requirements for different growth periods of jujube. The flowering period requires higher humidity, and the relative humidity of 70%-80% is beneficial for pollination and fertilization. If the period is too dry and the relative humidity is less than 40%, it will affect the pollen germination and the elongation of the pollen tube, resulting in poor pollination and fertilization. The fruit drop is serious and the yield is reduced. The phenomenon of "focus" is caused by air drying and low relative humidity. If the winter jujube seedlings have too much rainfall during the flowering period, especially the continuous rainy day of the Citi, the low temperature is not conducive to pollination. The pollen is easy to burst and cannot germinate normally, and the fruit setting rate will also decrease. In the later stage of fruit growth, it is required to be rainy and sunny, with high temperature during the day, low temperature at night, and large temperature difference between day and night, which is conducive to sugar accumulation and fruit coloration. If the amount is too much, excessive frequency will affect the growth and development of the fruit, fruit cracking, pulp and other fruit diseases will be aggravated, and affect the quality of winter jujube. Soil moisture can affect the water balance in the tree and the growth and development of various organs. The soil water holding capacity in the field is about 70%, which is conducive to the growth of winter jujube. When the water content of the 30 cm soil layer is 5%, the winter jujube seedlings will appear temporary wilting. When the water content of the soil layer is 3%, it will be wilted.