According to investigations, the scattered planting of walnut trees has the following advantages: First, the tall walnut trees have a long lifespan, and the large trees of the last hundred years can still maintain high yields. The tall tree, thick branches and leaves, the diameter of a large walnut tree can reach more than 10 meters, covers an area of ​​100-200 square meters. Second, the scattered planting of walnut trees can not make full use of field heads, land, slopes, gaps, village and hospital yards and other sporadic space, not to compete with the farmland. At the same time, the environmental conditions of decentralized planting are also conducive to the growth and development of the walnut trees, so they can achieve high yields. Third, the light-transmitting and transparent walnut trees are hi-light tree species, and in a sunny, well-ventilated, warm and cool climate, a large number of strong yields can be achieved. Such as the use of leaf-type planting, the crown can be connected to each other, the light inside the canopy is weak, ventilation is poor, the crown within the leaves is small, thin, small, easy to fall early, the indica is less solid or not strong, the fruit is only distributed in the branches outside the canopy On the other hand, the yield per plant and yield per unit area were 20%-40% less than that of the decentralized planting. Fourth, the increase in yield per plant Walnut tree planting a large number of high yield, suitable for planting a wide range of the total planting area. In the case of decentralized planting, they can be planted on plots of land that are not suitable for planting crops, such as fields, grounds, slopes, gaps, and vacant land adjacent to the village. The number of plants planted and the row spacing are not limited, but the spacing between two adjacent plants should not be less than 10 meters. V. Suppressing the spread of pests and pests has a certain inhibitory effect on the occurrence and spread of walnut pests and diseases, and promotes the high quality and high yield of walnuts. Ground-Inserting Micro-Spray,Rod-Inserting Micro-Spray,Fruit Tree Vortex Micro Nozzle,Greenhouse Hanging Micro Spray Shandong Yibiyuan Water-saving Equipment Technology Co., Ltd. , https://www.cnybyjs.com