How to choose rootstock?

An excellent rootstock should have the following conditions: good grafting affinity with scions; Good adaptability, strong resistance, strong ability to resist pests and diseases; Conducive to the growth and fruit quality of fruit trees; Easy to breed in large quantities; It has the special characteristics of regulating the growth of trees, such as inhibiting the growth of trees, dwarfing the growth of trees, or promoting the growth of trees, making trees grow tall and big.

China fruit is rich in resources and has a long history of cultivation. In the long-term production practice, a large number of rootstock resources have been accumulated through continuous exploration and discovery, artificial cultivation and introduction from abroad. According to different classification basis, fruit tree rootstock resources can be divided into many different types. According to the propagation mode, rootstocks can be divided into seedling rootstocks and asexual rootstocks Clonal rootstocks can be divided into rootstocks and rootless rootstocks according to propagation methods. According to the influence of rootstock on tree growth, it can be divided into arbor rootstock and dwarf rootstock. According to the position of rootstock in the tree, it can be divided into base rootstock and intermediate rootstock. According to the botanical classification status of rootstocks and scions, they can be divided into * * * rootstocks and non * * * rootstocks. China has a vast territory, and the ecological conditions in different regions are very different, forming many rootstock types with outstanding characteristics in one aspect or several aspects. For example, among apple rootstocks, the mountain stator originated in the northeast has strong cold resistance and good drought resistance and barren resistance. The begonia fruit and Baling begonia in Hebei are more salt-tolerant, iron-deficient and yellowing-resistant, and have good cold resistance, drought resistance and waterlogging resistance.

A fruit tree usually has a variety of rootstocks to choose from. The adaptability of rootstocks to local natural conditions, especially climatic conditions, should be considered first. The stronger the adaptability, the higher the utilization value. Rootstocks selected under certain ecological conditions have the strongest adaptability to local natural conditions. Therefore, it is suggested to use local rootstock resources as much as possible. When local resources are scarce and foreign resources need to be introduced, we should fully understand the characteristics of the introduced rootstock and learn from the reference experience of other areas with similar conditions.