Seedlings of fruit trees are the material basis for the establishment of orchards. The quality of fruit trees and seedlings is related to the growth of trees, the number of results, and the level of economic benefits. Therefore, we must carefully choose seedlings. The prerequisites for excellent fruit tree seedlings are: (1) High-quality fruit tree seedlings in the root system must have more lateral roots and fibrous roots. At the same time, the lateral root grows and is distributed evenly, but not too little or biased toward one. First, second seedlings, should have more than three lateral roots, roots to reach 0.4 to 0.5 cm or more. (2) The high-quality fruit tree seedlings of the bud must be in the range of 40-80 cm below the fixed part of the shaping belt and have more than 8 full and full buds. (3) High and coarse seedlings are not as high as possible. The height of primary and secondary seedlings can reach 1 meter or more and the maximum is not more than 1.2 meters. Seedlings with autumn shoots, stem diameter to reach 0.8 to 0.9 cm. (4) Degree of healing Regardless of the fruit tree seedlings that are grafted or budded, the interface must heal firmly and the healing should be less than one-half. Even if other conditions are satisfactory, it should not be purchased. (5) No pests and diseases All mosaic, apple rust, persimmon, jujube disease, apples, pears, peaches, cherry root cancer, root disease, and a variety of virus seedlings must not buy The seedlings with apple aphids also need to be disinfected.
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