Summer budding seedling breeding method for walnut

Abstract

The invention relates to a summer budding seedling breeding method for walnut. By means of the method, the problems in the prior art can be effectively solved that time and labor are wasted, the investment cost is high, the seedling growth is low, the outplanting cycle is long, and the profit margin of seedling farmers is greatly squeezed. According to the technical scheme, the method comprises the steps that annual stock seedlings are not subjected to brush stumping in spring of the next year, from May 15th to June 30th when the highest mean daily temperature is 20-30 DEG C, and the lowest temperature is 10 DEG C or above, grafting is directly conducted at the positions, 8-10 centimeters from the ground, of old branches by using a double-knife large-square budding method, scion buds are plump buds on the middle-upper portions of scions, after grafting, three compound leaves are reserved above a joint, and rootstock pruning is conducted immediately; 15 days after grafting, secondary rootstock pruning is conducted at the positions 1-3 centimeters from the grafting joints. By means of the method, the tops of the seedlings can be kept to be high in quality, fewer lateral buds are germinated, the amount of labor used by bud picking is reduced, early grafting is achieved, the seedling growth time is prolonged, the seedling growth is improved, the seedling outplanting cycle is shortened, and the method is an innovation of walnut budding seedling breeding methods.

Description

technical field [0001] The invention relates to the field of walnut grafting seedling cultivation, in particular to a method for walnut seedling grafting in summer. Background technique [0002] The commonly used method of walnut budding in production at present is: 1 year old rootstock, 5-10cm flat stubble from the ground before budding in the second spring, leaving 1 strong bud, and erasing the rest. From June to July, use the method of square bud grafting at about 20 cm above the new branches of the year, and after bud grafting, leave 3 compound leaf cutting anvils above the joint, and after the buds germinate, place them 3 cm above the joint. The anvils are cut again at the left and right to promote the growth of buds. According to the actual growth of the seedlings, they can be cultivated for 2-3 years to meet the requirements of the nursery. This method requires work such as stubble leveling, repeated bud removal, and topping, which is labor-intensive, time-consuming,...

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, in order to solve the defects of the prior art, the object of the present invention is to provide a method for raising seedlings by budding of walnut in summer, which can effectively solve the problem of labor-intensive, time-consuming, high input costs, small growth of seedlings and difficulty in going out of the nursery. The cycle is long, which seriously reduces the profit margin of seedling farmers

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