What are the common breeding methods of Lagerstroemia indica?

Commonly used methods are sowing and cutting.

Sowing: picking capsules from June 65438+1October to June 65438+June 065438+1October, drying, cracking, peeling and cleaning seeds. It is suitable for drilling or sowing in early spring, and seedlings can emerge in April. In the seedling growth period, in order to keep the soil moist, when the seedling height is 10- 15cm, apply 1 time every 15-20 days. After autumn, calcium superphosphate 1 time, about 30 kg per mu. With proper management in fertile nursery land, seedlings can bloom in the next year. Colonize for 2-3 years. If Lagerstroemia indica is cultivated, sufficient base fertilizer should be applied on the transplant bed to remove its weak branches, and the strong branches should be pulled out in early spring, that is, two buds should be left off the ground to cut off, so as to promote the growth of the strong branches and cultivate the trunk. In the future, the buds that grow from the stem base will be erased, or several branches will be twisted together. It is usually carried out when the sap flows in spring, so it is not easy to break branches when twisting. Where the branches are connected, cut off the skin with a knife and tie it tightly so that it can heal each other. In this way, with the elongation of the branches, they are continuously entangled for 2-3 years, forming a tree-like "Lagerstroemia indica". If only stubble is leveled, bud is smeared, but not twisted, "Ziwei" can be formed. Cutting: Before sprouting in spring, select robust branches of 1-2 years old, cut cuttings about 15-20 cm long, and insert them into 2/3 soil, preferably loose and well-drained sandy loam soil. Pay attention to moisturizing after transplanting, the survival rate can reach more than 90%, and the height of 1 annual seedling is about 50 cm. Softwood cuttings can also be used in summer, but attention should be paid to shading and moisturizing. Lagerstroemia indica can also be propagated with old stems. In early spring, select branches over 3 years old, cut into cuttings of 20-30 cm long and insert them into the soil for 2/3. Pay attention to keep the soil moist, so that it can take root and grow branches that year, and then replant and finalize the design the next spring. This method is often used to cultivate bonsai materials by stumps. Tillering: When sprouting in spring, the plants are divided into roots. According to the growth situation, 2-3 or single roots can be planted to become seedlings.