Grafting technology has a very practical role in seedling propagation and variety improvement of fruit trees, and spring is the golden season for grafting fruit trees. Recently, many readers consulted on the issue of fruit tree grafting through the Internet and SMS. For this reason, the reporter specifically contacted Xu Mingju, senior agronomist of the Feixian Fruit Industry Bureau, and asked Xu to help you summarize the factors that affect the survival rate of fruit trees and how to increase survival rate:
Affinity: The closer the affinity between the scion and the rootstock, the stronger the affinity, and vice versa. It can be summarized as the strength of different kinds of affinity in the same genus, such as apple and jellyfish, pear and du pear, and the anvil has better affinity.
Temperature: During the grafting, the temperature is most likely to survive between 20 and 25°C, and the temperature is too low and too high to affect the survival rate. Feixian generally has a high survival rate from March to April in spring and from August to September in autumn.
Humidity: The ability of the scion to stay alive greatly affects graft survival. Therefore, the saturated humidity in the air is very favorable for grafting. After the plastic film is used in production, the plastic bag is tied and then the plastic bag is used to maintain the humidity. In addition, scion storage is also critical.
Illumination: Under dark conditions, the grafted calli grew faster and had a higher survival rate; under light conditions, the callus was less hard and formed slowly. Therefore, shades commonly used in production are used to increase the survival rate.
Grafting methods: Grafting methods vary from time to time. From June to August, rootstocks and scions have been peeled off, and the “T†shaped bud connection method is appropriate. In the state of rootstock and scion not peeling from March to April, branching methods (including splicing, Cut, etc.), embedded buds. Scion moisture content: Scion moisture content will directly affect the graft survival rate. In operation, the scion is usually soaked in water and the scioned scion is contained in the mouth to maintain the scion moisture content.
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