Walnut tree bud piece grafting method

Abstract

A walnut tree bud piece grafting method comprises the steps of rootstock selection, rootstock cutting treatment, scion preparation, bud cutting and grafting as well as bud inlaying in the grafting process, management after grafting and the like, and is characterized by: (1) treatment after rootstock cutting: painting a saw bite by using Zhifukang (a branch rot healing agent); (2) carrying out second-time rootstock cutting on new shoots in advance which germinate on a rootstock, and pruning young shoots; (3) leaving a length and a width for the notch of a cut rootstock; (4) maintaining a bud connecting piece to be white; (5) binding by using polyethylene film; and (6) cutting the rootstock after a grafted bud survives. The method has the following advantages: (1) the rootstock saw bite or notch of a first-time cut rootstock does not wither and rot, and new growing tissue forms quickly; (2) cutting is performed in advance, and nutrients are collectively supplied and stored; (3) callus can form ahead of time through various measures; (4) pesticide is painted on the notch after grafting, and the survival rate is up to 96% or more; and (5) the cycle and time of walnut orchard constructing and forest formation are shortened. The method is suitable for the grafting and improvement of walnut trees.

Description

technical field [0001] The invention relates to the grafting of trees, in particular to the grafting of buds of walnut trees. Background technique [0002] Bud grafting of walnut trees has been applied in practice. In the Chinese patent database, there are as many as dozens of technical solutions involving walnut tree grafting, for example: No. ZL2012104824976 "A Method for Grafting Walnut Trees", No. ZL2013107528127 "A Method for Grafting Whole Canopy of Walnut Trees", No. ZL201410105374X " A method for grafting walnut seedlings", No. ZL2015106967003 "A method for grafting and tree shaping of perennial walnut trees", No. 201610885884 "A method for grafting walnuts", No. 2017110724111 "Method for grafting short piles of walnut trees", No. 2018113698607 No. "A kind of grafting seedling raising method of walnut saplings" etc. [0003] Existing walnut tree grafting method has the following defects: 1. the original technology did not adopt Zhifukang to brush sawing or notch wh...

AI Technical Summary

Problems solved by technology

[0003] Existing walnut tree grafting method has the following defects: 1. the original technology did not adopt Zhifukang to brush sawing or notch when stock was broken for the first time, and rootstock sawing or notch was subjected to sunshine, rain, The skin and wood layer are easy to split, leading to rot, affecting the healing of the saw or cut wound, and the germs are easy to invade through the wound, which affects the germination and growth of new shoots; The new shoots are shortened (the second cut off the stock), and the nutrition of the tree body cannot be concentrated to supply the new shoots; ③ When cutting the rootstock incision with the original technology, there is no white or the white is too small at the bottom and right of the cut, which is not conducive to drainage, and the effect is more severe. Injury tissue formation, thereby affecting the survival rate of grafting; ④ The original technology did not insert the left side of the bud piece into the interlayer between the rootstock bark and wood when grafting the bud piece, and the tissue healed slowly; ⑤ The original technology used the first banding method The binding film is narrow, and the elongated plastic strip is directly tied to the cortex of the rootstock under the bud piece, so that the drainage of the bud is not smooth, which affects the survival rate of the graft, and the plastic film is not used for the second binding; ⑥Original technology When cutting the anvil, the notch was not painted with Zhifukang, the notch is easily infected with germs, dried up and rotted, affecting the normal growth of grafted shoots, and some dried up and rotted to the rootstock below the grafted joint, leading to the death of new shoots