Sunlight is the foundation on which all living things depend, providing inexhaustible energy and energy conversion. The photosynthesis of plants, only under the influence of walking, absorbs the carbon dioxide in the air and the water absorbed from the soil in the chloroplast of the leaves, and the minerals are converted into organic matter to release oxygen, which is needed for bio-available energy and breathing. oxygen. Winter jujube is a species of hi-light, and the growth of winter jujube branches, leaves, fruits and roots are inseparable from the sun. Appropriate light can increase and differentiate the somatic cells of the vinegar, control cell division, elongation, and maintain normal photosynthesis, which is conducive to the accumulation of dry matter in the tree and the healthy growth of various organs. For example, the differentiation and formation of flower buds, the quality of the fruit, the rate of fruit set, the growth of fruit, coloring, the production of sugar and vitamin C are directly related to light. In addition, insufficient light will affect the roots of winter jujube seedlings. Growth, because the nutrients needed for root growth mainly depend on the photosynthesis products in the shoots, root growth will affect the growth and development of various parts of the ground. Photosynthesis is inseparable from the water and minerals absorbed by the roots. At present, the common winter jujube garden is used for the purpose of achieving early results. However, due to improper management, the jujube garden is closed, the canopy ventilation is poor, resulting in an increase in the number of invalid pages, and the production capacity of the leaves is reduced, resulting in the winter jujube seedlings. Debilitating, jujube, secondary branches, jujube hanging growth, low fruit setting rate, low yield, poor fruit quality, inner litchi strips die, the result of external migration, serious pests and other phenomena. It is necessary to solve the problem of excessive group structure and tree structure of winter jujube garden through winter shearing and summer shearing, and to achieve the purpose of high quality and high yield of winter jujube.