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1, mechanical processing. 1 Peeling: In general, it is more difficult for fruit tree species with more advanced twigs to take root, and the cork layer of the epidermis is peeled off before cutting to enhance the water absorption ability of the cutting and promote rooting. 2 vertical injury: with a knife at the base of the cutting 2 to 3 cm long wound, to the phloem, can form a neatly arranged adventitious root between the vertical wound. 3 Ring peeling: The shoots prepared on the mother plant 15 to 20 days before use are used as an insert. The basal circumcision of the branches (width 3-5 cm) is conducive to the promotion of adventitious roots.
2. Treatment with biological agents. Jinbao root seedling can significantly promote the rooting of the seedlings, enhance the absorption and fixation of the roots, can increase the temperature, germinate early, and promote weak seedlings into strong seedlings. When planting and transplanting, the seedlings can be quickly rooted and rooted, and they can prevent leggy and resist disease and stress. It is better to cut the base of the insert longitudinally before handling.
3, prepare a good nutrition matrix. Before the cutting, the materials and substrates that are easy to breathe, nutrient-free, pathogen-free and pest-free should be selected as seedbeds, such as fine river sand, perlite, and burnt soil. The seedbed is moist and it cannot accumulate water.
4, timely use of high-quality cuttings of different varieties, cuttings rooting is difficult. Easy to root such as fir, willow, grapes, etc.; not easy to root a pear, magnolia, etc.; difficult to root the pine, walnut, lychee and so on. As the age and age of the same species and branches grow, rooting capacity will decline. Branches are abundant in autumn and winter, and the rooting power is stronger than in the spring after the dormancy period.
5, control the microclimate. The microclimate mainly refers to the light, air, temperature, and humidity of the garden. The light is mainly dark. It is necessary to increase the oxygen properly to facilitate the life activities of the cuttings. The temperature is 23-25 ​​degrees and the relative humidity is 70%-80%.
6, heating treatment General Miao Ben began to germinate at the temperature of 10-12 degrees, cutting rooting is the most favorable 18-30 degrees soil temperature. In early spring, cutting is often difficult due to soil temperature, and the temperature of the lower part of the cutting can be artificially increased. At the same time, water temperature, ventilation, and the temperature of the upper bud of cuttings are reduced.
The growth of seedlings needs strong roots as the basis, but some seedling varieties have weaker root growth ability and must be treated to obtain higher rooting rate and better root system.