The reasons for the low grafting survival rate of walnut trees are as follows: Firstly, the speed, quality and survival rate of callus formation are lower than those of other fruit trees, and the callus is rough; second, the content of tannins in trees and shoot buds is high, and air oxidation occurs. The formation of a dark brown isolation layer will affect the formation of callus; the third is the characteristics of wound flow, the performance of the dormant period is particularly prominent; Fourth, the branches are sturdy and curved, the leaf marks are protruding, and budding is difficult.
The walnut branches in the spring can avoid the above problems. It can be started after the top buds of the rootstock seedlings begin to spit green, and it takes 20 to 25 days to grow young fruit. It is necessary to use stout rootstocks and full-grown, one-year-old or biennial-year-old shoots for scion to ensure that they have strong physiological functions.
In the process of grafting, we must master the "character" in order to improve the survival rate of grafting. The "character of the eight-character" is: 蘸, ã€, å¿«, å¹³, 准, ç´§, 裹, 套, 套. “蘸†is about to scoop into liquid paraffin at 95°C and dip quickly to make it covered with a layer of thick and even paraffin wax. “Discharge†is to cut the rootstock seedlings 60 centimeters from the ground one or two days before grafting, and “low water†to ensure that the grafted parts of the upper part heal. "Fast" means that the speed of cutting scion and rootstock is faster. "Ping" means that the cutting surface must be flat. "Quasi" is the alignment of rootstock and scion formation layers. "Tight" is the use of plastic strips around the joints of the scion and the rootstock. "Wrap" is to wrap the joint tightly, then wrapped in two layers of newspapers. "Sleeve" means that the grafted part is finally covered with a suitable plastic bag.
Botanical Extract refers to the material extracted or processed from plants (all or part of plants) with appropriate solvents or methods, which can be used in the pharmaceutical industry, food industry, health industry, beauty industry and other industries.
Botanical Extract ,Andrographolide Powder ,Kaempferol Powder, Isolated Soy Protein Meat
Xi'an Double H Health Technology Co., Ltd , https://www.xahnhcj.com