It is not advisable to adopt a tall tree with multiple main branches Gao Hua believes that the dense planting of dwarf densely planted apple trees will result in limited growth space of the trees and excessive growth of the branches and leaves of the plants. Therefore, it is not appropriate to adopt a trunk layered tree shape when trimming and shaping, but a spindle shape is adopted. , elongated spindle shape or modified spindle shape tree. No matter which kind of spindle-shaped tree, its structural features are that there are no branches on the main branch. When trimming trees, pay attention to controlling the size of the crown, and try to increase the number of main branches. As the main branches increase and there are no side branches, it is necessary to prevent the growth potential of the main branches from being stronger than that of the central stems. Do not allow the main branches of the trees to grow and grow too fast, so as not to affect the growth of the central stems. . The branches of each branch should be reduced, and the method of pruning should be based on light shears and less short cuts. When pruning in winter, the extension branch of the young tree main branch can not be cut. Pay attention to timely update and rejuvenation The dwarf densely planted apple trees have a high planting density, and the individual trees have more fruits and a higher yield per unit area. However, the lighting conditions in the orchard are not as good as the thin plantation of the tree. Gao Hua said that if the supply of fertilizer and water is slightly insufficient, the tree will be very vulnerable. If the variety is a short-branched variety, the management can't keep up, and the tree is more prone to premature aging. Due to the above reasons, after the tree enters the fruiting period, some trees bloom to the top, and special attention must be paid to timely updating and pruning, and nutrition and water supply should be ensured in the management of fertilizer and water. When pruning, pay attention to adjusting the tree potential to make it balanced, to maintain the growth advantage of the center, to delay aging, and to extend the economic life of the tree. Improve light conditions and enhance leaf photosynthetic efficiency Dwarf densely planted apple trees have many plants, many branches and many leaves. Gaohua suggested that various measures should be taken to improve the light conditions and enhance the photosynthesis efficiency of the leaves. To this end, winter shears should pay attention to more sparse cuts, and if necessary, also need to be thinned in summer. Proper adjustment of the tree structure in a timely manner and improvement of the effective leaf area factor should also reduce shading from around the orchard. When building an orchard in a mountainous area, it is necessary to build a garden in the open area of ​​the sunny area, plant trees in the north and south, and plant them in a rectangular shape. The spacing should be greater than the plant spacing to facilitate the extension of the illumination time and enhance the photosynthetic efficiency. After appropriate cutting of the branches and leaves, it is necessary to prevent the leaves from premature aging or falling off to ensure that the photosynthesis efficiency in the late growth stage is still good. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Organic acid Shandong YingLang Chemical Co.,Ltd , https://www.sdylhgtrade.com
Apple dwarf dense planting
Dwarf and dense planting is the use of artificial and chemical control methods to dwarf the tree and increase the number of planting trees per unit area in order to greatly increase the yield. On June 19, in the orchard of Chicheng Township, Qingcheng County, Gansu Province, Gao Hua, an associate professor of the College of Horticulture of Northwest A&F University and the director of the apple experiment demonstration station in Qingcheng County, said that the apple tree crown grafted by the dwarf anvil is smaller than the Qiaohua anvil. Grafted apple trees, dwarfing anvil apple trees yield lower than the Qiaohua anvil apple trees, so planting dwarf apple trees should increase the planting density and carry out reasonable close planting.