The prevention and control method of winter jujube seedling root rot is applied with high-quality organic fertilizer to promote the growth of jujube seedlings host and improve disease resistance. Applying manure as a base fertilizer, 3000-5000 kg per 667 square meters, can greatly reduce the disease rate. At the same time, it may affect the changes of the antagonistic microbial population in the soil and inhibit the growth and spread of the bacteria.   In the early stage of the disease, 50% carbendazim or 65-generation Mn-Zn WP 500 times solution, or 70% chlorothalonil WP 800 times solution, 98% carbendazim 2000~3000 times liquid in the middle of the disease root. Timely drainage and irrigation. For plots with low terrain and poor drainage, it is necessary to strengthen drainage work. In the hot and dry season in summer, timely irrigation should be carried out to reduce the surface temperature and prevent the high temperature surface from burning the base of the stem to enhance the host's vitality, improve disease resistance and reduce the incidence. In the germination stage of jujube seedlings, 1:1:200 Bordeaux mixture is sprayed on the seedbed; or the soil is sterilized by using 50% viscous powder 800-1000 times.   For different periods of winter jujube seedlings, different humidity will have a great impact on its growth. Winter jujube requires high humidity, so the fertilization of its pollen will have a good effect. If the humidity is not enough, it will lead to a reduction in production. Generally, the humidity is 70% to 80%. But if the humidity is less than 40%, the pollination will be bad, and the flowers will be bad. But too much rain. It will cause the pollen to burst and not germinate, and the result will be reduced.   After the results, the winter jujube requires more rainy weather, especially such weather will make the temperature difference between day and night large, which is conducive to the production of sugar and increase the taste of the fruit. Experts from Hangzhou Studio Company found that if the rain during this time Most of them will cause fruit dates such as cracked fruit and smashed in winter jujube, and will have an impact on the quality of the fruit. Although winter jujube has strong drought resistance, growers must pay attention to maintain reasonable soil moisture.