1. Selection of rootstocks and anvil branches Select the main and lateral branches of the middle and young trees, the upper and middle branches of the young trees, the competing branches and leggy branches, or the middle and upper branches of the tree crown, the extension branches of the large branch, and the aging trees. Update the rejuvenated wounds and leggy branches, and the anvil thickness should be 1~2cm in diameter. Scion selection of high-cultivar plants on the robust growth of diameter of about 0.8cm, development is full, full-bud annual branches is appropriate, followed by mining, if not with picking, then each 50 should be a bundle of cellar sand processing . 2. Two kinds of high grafting and grafting technologies 2.1 Autumnal spring combination Organic combination autumn can be used for longer growing time, but should avoid the high temperature and dry season before the beginning of September, after the fruit recovery, the nutrient accumulation will be better. More adequate from mid-September to late November is appropriate, especially for the sake of giving full play to the advantages of high grafting in autumn, strong branching ability in the next year, slower branching tendency, and favorable flower bud formation, and should grasp the mid-September to 10 It is carried out in mid-month to increase the germination rate and increase the length of the shoots after germination. At the same time, the inner part of the shoots should be the main high-rising part in autumn, and the branches and leaves of the non-high-risk parts should be kept as far as possible. The spring connection is suitable for the early winter from late January to late February. The high junctions are determined by the different sprue branches of the scions. In addition, the implementation of the combination of autumn harvest and spring harvest will help to prolong the high-return period and ease the contradiction that the large-scale, high-single, single-use spring pick-up is overly time-consuming. 2.2 The scion branches of different buds should be properly selected to have different treatment of different branches of the bud or different branches of the same bud, and the difference in response after high grafting is significant. The mid-leaf shoots are full of single shoots. The spring shoots are strong. The branching phenomenon is very rare in that year, and the key points are used for the extension of the middle and peripheral stem extensions to help strengthen the main and lateral branches to prolong the growth of the branches; the germination rate before and after the Mid-Autumn Festival. High, when the autumn shoots are longer, they are mainly used for high picks. In the spring, the buds in the middle two buds of the buds are full, the branches of the strong and weak branches, the single flower buds in the middle and upper branches are extracted, the branches of the bifurcation or trigeminal branches, and the thin and weak branch buds at the base are drawn. The branching tendencies are relatively slow, and the flower formation is relatively easy. When the height is high, it is mostly used in the non-backbone extension branch of the internal condyle to facilitate the enrichment of the internal condyle, and the result area and the result amount are rapidly increased. 2.3 Pear multi-point more than two high-connection method to change the technology of pear multi-branch multi-point two high-connection method is to use multi-branch multi-point high-connection method, according to different high-stakes select the appropriate appropriate high-time and The technical method for the high shoots of shoots in the shoots is based on the requirements for multiple shoots and multi-points, and the Mid-Autumn Festival with appropriate temperature and humidity conditions from mid-September to mid-October is selected. The branches of non-rooted stems are connected first to promote high shoots in the fall, and in mid-January to mid-February the single-flower bud branches in the middle and upper part of the scion, thin and thin single branch buds at the base, or middle leaf buds are selected. The full two-bud shoot segment is used to make up the non-bone branch of the internal condyle. At the same time, the selection of the single branch bud of the middle part of the scion is highly recommended for the high-strength connection of the backbone extension branch to enhance the growth prominence of the backbone extension branch and achieve the best high-return time. , The best high-splicing sites and the best shoot branch effects overlap to achieve the purpose of rapid restoration of harvested tree crowns and yield. 3. Management after high contact 3.1 Supplementary connection: After 20 to 40 days of high contact, observe the investigation of the healing conditions of the scion and root, and if the scion is withered, it should be patched. 3.2 In addition to sprouting the membrane: after the tree is cut and the cuttings are high, it will cause a large number of germination buds of the anvils. It must be eradicated in time, but it can be properly retained as a supplement without affecting the growth of the buds. Branches are beneficial to the nutrient balance of the tree and accelerate the growth of the scions, and the auxiliary branches are removed in the second year after the high grafting. The scion shoots should be timely broken after aging. 3.3 Lazhi: After the high graft, the spacing and orientation of the shoots should be adjusted when the shoots are nearly mature. Pull the shoots in time to promote the formation of flower buds and appropriate short cuts in winter. 3.4 Strengthen the management of fertilizers and waters: After the trees are grafted high, they will inevitably weaken the growth of roots and inhibit the growth of vegetative growth. Therefore, it is necessary to strengthen the management of fertilizers and water for the high-risk trees, in order to promote the restoration of the trees, and at the same time strengthen the comprehensive prevention of pests and diseases.
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