1. Cuttage propagation: cuttage can be carried out after defoliation in autumn or before germination in spring.Before cutting, base fertilizer should be applied to disinfect the soil and improve the survival rate.Autumn cuttings should be cut with the cut with the cutting, spring cuttings can be stored in winter, can also be cut with the cut.It is better to select branches above 0.5 cm and connect them into cuttings 15-20 cm long.The upper part of the cut should be flat, and the lower part should be cut into a horse shape near the bud eye, which is conducive to faster rooting of cuttings.When cutting, the row spacing should be 30 cm, the plant spacing should be 20 cm, the scion should be slightly exposed to the ground, and then covered with soil and compacted before irrigation.
2. Grafting propagation: when the germination weather is clear in the middle ten days of March, cutting the stock at the smooth position of about 2m, about 5cm and leaving a scion with 2-3 full buds, cutting the bottom end of the scion into a malleate shape, vertically inserting the scion between the cortex and the xylem, and then tightly wrapping with a plastic cloth belt without leaving any air.
It can be propagated by seeds.The seeds of 15-30 years old healthy mother trees can be harvested when the seeds become yellow-white.When seeds are used for propagation, sandy loam land with water source, good drainage and thick soil layer is selected as nursery.Soil preparation should be fine, enough base fertilizer should be applied, after shallow ploughing, full bottom water should be irrigated before sowing, and the sowing method can adopt ridge sowing or ridge sowing.Then sow in the middle of April, in a cool place or in a cloudy day after drying the seeds.When sowing, it is best to cover about 1 cm of soil and trample at an interval of about 30 cm of row spacing.
