The pruning task of walnut trees is to cultivate trees, accelerate the expansion of the crown, promote branching, and form various branches with early results.
First, dry: The height is generally 0.8 to 1.2 meters. Different soil conditions and varieties, different dry height, dry, strong, more upright varieties, good soil conditions, fertilizer and water, or fruit intercropping, dry height can be higher, and vice versa can be lower.
Second, the main branch training: After the dry, when there is a certain branch, choose to stay upright Zhuangzhi as the center stem, and in the plastic band with three vertical angles suitable, adjacent, growing close as the first layer of the main Branches, the remaining branches are kept as far as possible without affecting the growth of the main branch, and they are used to control the branching potential to advance the results and support the tree. When reaching the height of the second main branch culture, the center is short and dry, and the second main branch is promoted, retaining 2 to 3; when the height of the third main branch is raised, the central stem is cut short and the third layer is promoted. Keep 1 to 2 main branches, and the main branches of each layer should be selected and left blank to prevent overlap.
Third, the collaterals stay selected: short main branch extension branch after branching, in principle, also sprouted into the top buds, expand the crown. However, when prolonged branches are long and bald, they should be shortened to promote branching and uniform distribution of branches. In the future, lateral branches will gradually turn into large branches.
Fourth, sparse dense branches: Early solid walnut branches early, large amount of branches, easy to cause the crown inside the crown density is too large, is not conducive to air and light. Therefore, pruning should go strong to stay weak and mean tree branches; when the branches should be close to the base of the branches cut off, must not be left to pile, in order to facilitate the healing of the cut.
Fifth, the use of leggy branches: early fruit varieties results early, fruiting rate is high, the amount of flowers and flowers, nutrient consumption is too high, branches easy to dry, thereby stimulating the formation of budding base bud budding. The budding branch can grow fruit branches in the second year, but it gradually weakens. It uses the characteristics of thick, short branches and long results, and it is cultivated into fruiting branches through summer topping or short cuts or spring short cuts to enrich the results. Crown space, updated debilitating result branches.
Sixth, the treatment of the back branches: behind the growth potential is stronger than the upper branch, must be timely control of its growth potential, where the birth of the first branch of the main branch on the back of the branches, there are inverted pull phenomenon, and affect the development of the branches, all Cut off from the base. The back branch that is drawn on the upper branch of the tree crown can be determined according to the size of the opening angle of the main branch. If the original mother branch is too weak or the branching angle is too small, the back branch may be used instead of the original branch head, and the original branch head may be cut off or cultivated into a result branch. If the back branches have medium growth and mixed shoots have been formed, the results should be retained; if the back branches grow strong, they can be retracted at the appropriate branches after the results and cultivated into small stick groups.
Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
Molecular Diagnostic,Nucleic Acid Extractor,Rapid Diagnostic Antigen Kit,Pcr Analyzer Molecular Diagnostic
Hangzhou DIAN Biotechnology Co., Ltd. , https://www.dianbiotech.com