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1, take the branch should be early. Take branches for the morning. In the morning, the flowers and trees have sufficient water content. After the cuttings, the wounds are easy to heal, they are easy to root, and the survival rate is high.
2, after the selection of flower cuttings. After flowering, the content of nutrients in the branches is high, and they are stout and plump. After the cuttings survive, they become rooted quickly and are easy to survive.
3, with cuttings. Cut 2-3 cm from the lower part of the branch between the new branch and the old branch. This type of branch is a cutting strip. There are many nutrients between the litchi twigs, the organization is tight, the rooting is easy, the survival rate is high, and the seedlings grow stronger. Suitable for sweet-scented osmanthus, camellia, figs and so on.
4, mechanical processing.
First, skinning: For the more difficult rooted varieties, the cork layer of the epidermis is peeled off prior to insertion, the water absorption ability of the cuttings is strengthened, and hair rooting can be promoted;
The second is vertical injury: cutting 2-3 cm long wounds to the phloem with a knife to form a neatly arranged adventitious root in the longitudinal injury;
The third is girdling: 15 to 20 days before cutting, the base of the shoot to be used as a cutting is stripped and the cortex is 5-7 mm wide to facilitate the cuttings to give adventitious roots.
5, increase the bottom temperature of the slotting machine. In early spring, cuttings often cause difficulty in rooting due to insufficient soil temperature. Artificially increasing the temperature at the rooting part of the cuttings, and spraying water to reduce the temperature of the upper buds can promote rooting. The lower end of the seedbed can be increased in temperature by using a mulching membrane, an electric hotbed or a manure fermentation heat source.
6, pharmaceutical or hormone treatment.
(1) Immerse the base of the cuttings in a 0.1%-0.5% potassium permanganate solution for 10-12 hours. Immediately after removal, insert the cuttings.
(2) Treat the cuttings with aqueous sugar solutions at a concentration of 5%-10%. The base of the strips was immersed for 24 hours and then removed, rinsed with fresh water and cut.
(3) Dilution with vitamin B12 plus one-fold dilution with water, remove the cuttings for 5 minutes, and dry them slightly;
(4) Some cuttings are easy to flow, should be put into water immediately after harvest, and then treated with hormones. The commonly used hormones include naphthalene acetic acid, indole butyric acid, and ABT rooting powder. Before the treatment, the base of the inserts will be cut vertically and the effect will be better. Hardwood generally use 5 - 10ppm dilution; cutting base immersed for 12-24 hours; shoots generally lO-25ppm solution, immersion 12-24 hours. In addition, auxin is formulated into a high-concentration solution of 2000-4000 ppm for 5 seconds, and the rooting effect is also very good.
Ways to promote rooting of flowers and trees
Cuttings are the most commonly used methods for reproduction of flowers and trees. In order to increase the survival rate, some economically simple methods for promoting root growth are described below: