There are six ways to achieve high yield after planting pear trees.

With the gradual saturation of the fruit market, some old varieties are facing elimination, so it is imperative to replace the old and replace the new and introduce famous and high-quality varieties. The main points of the connection and its technology are as follows:

Grasp the best grafting time. The best time for grafting is from late February to early March every year. It is not easy to survive too early. If it is too late, the scion sprouts late, the branch grows slowly, and it cannot become a flower branch in the same year.

Have a good grasp of the ratio of output to joint. Practice has proved that the trunk circumference, crown diameter and total branch quantity of multi-joint grafting are significantly increased, which can basically maintain the balance of the aboveground and underground parts of the tree and the absorption and supply capacity of the root system, so that the survival rate of grafting is more than 99%. The number of joints is determined by the original yield of the tree, generally speaking, for trees with an original output of more than 200kg, one scion is per 500g of fruit; for those below 200kg, it is regrafted according to the proportion of 1000 grams of fruit per scion.

Flat branch grafting was used. First of all, the branches of the tree were cleared before grafting, and some big branches and over-dense branches were removed according to the requirements of tree shaping. Cut all the branches that should be grafted according to the branches, flatten them and then graft them. Do not cut them one by one, so as not to move inconveniently or damage the grafted scions. The grafting method adopts split grafting and cutting grafting, according to the short scion with 2 ~ 3 buds and the long scion with 3 ~ 5 buds, the traditional straight branch grafting is changed during grafting, the horizontal branch is selected as the rootstock, and the cut scion is inserted on the horizontal branch or drooping branch to facilitate the accumulation of organic nutrients and avoid direct insertion of the upper branch as far as possible. The interface is wrapped with film, and the top of the scion is sealed with wax to prevent water loss.

Don't take off your heart, untie it at the right time. That is, the new plants grown after grafting in the same year can not be picked out, which is beneficial to the capping of branches and easy to form flower buds. It is only necessary to twist the strong branches or competitive branches. In the first ten days of July, the interface is unbound after healing, and those who have not yet healed should continue to be bandaged and unbound after all healing.

Determine the yield by the tree and the fruit by the flower. For the grafted fruit trees in the same year, light cutting and slow release are the main ways to keep more branches in winter pruning. The flowering period of the second year, according to the age of the tree, the size of the crown and the branch burden, "determine the yield by the tree and the fruit by the flower".