Purple leaf, Li Qiudong, cutting

1. The cuttings are prepared to choose a tree that is 3 to 4 years old and grow robust as a mother tree. After the autumn leaves are cut off from the mother tree, the current branches without disease and insect pests can also be used as cuttings in combination with plastic trimming to cut the thick and buds, full of pests and diseases and mechanical damage. Cut the selected cuttings into 40 to 50 cm branches, bundle them from 100 to 200, and store them in wet sand.

2. The choice of nursery land and the site of nursery should be selected for irrigation and transportation, and the soil layer is required to be deep, fertile and loose sandy loam. Before the preparation of the ground, spread 1 to 1.5 tons of decomposed farmyard manure per mu, and sprinkle it with soil with 50% carbendazim 1500 g for soil sterilization; then apply 4000 g of 50% zinc-sulfur granules. Kill underground pests. Then deep ploughing, fine hoeing, leveling the land, removing debris such as weeds and agricultural film, and doing cockroaches. According to the depression, the length of the raft is 1 meter wide; the ditch between the raft and the raft is 0.3 m wide and 0.2 m deep. After doing a good job of repression, the hoe will be ploughed and prepared for cutting.

3. The cutting time is from late November to mid-December.

4. Cutting method Before cutting, first cut the branches that have just been cut or stored in the wet sand, cut off the thin branches and the water shrinking and shrinking parts, then cut the long branches from 10 to 12 cm from bottom to top, with 3 to 5 buds of cuttings. The near bud at the lower end of the cuttings is cut into smooth slopes to increase the contact surface between the formation layer and the soil, which is conducive to rooting. The upper end of the cuttings is cut into a plane at a distance of 0.8 to 1 cm from the bud. After cutting the cuttings, immediately immerse the lower end of the slope in water for 15 to 20 hours to allow the cuttings to fully absorb the water. The rooting agent was prepared by using 50×10-6 abt6 rooting powder in proportion, and the cuttings were immersed in the roots to facilitate rooting. The cuttings are inserted obliquely downward into the soil, with a row spacing of 5 x 5 cm, and the upper buds are exposed to the ground by 0.5 to 1 cm. Immediately after the cutting, the water is drained and the cuttings are intimately connected with the soil. After the ground is slightly dry, cover the sputum with a double-layer mulch, and at the same time, put a plastic small arch shed with a width of 1 meter and the same width on the surface to protect the heat and keep warm.

5. The cutting seedling management seedbed has a mulch and a small arch shed that can be kept for a long time without watering, such as the soil under the mulch is dry, and then water is irrigated along the gully.

When the minimum temperature drops to minus 5 °C, the straw curtain should be added with anti-freeze insulation; when the minimum temperature rises to 0 °C, the curtain will be uncovered during the day, and the grass will be surrounded by the night; when the minimum temperature reaches 5 °C, the arch shed should be opened during the daytime. Properly release the wind and prevent high temperature from burning the seedlings. At the beginning of March, when the seedlings were 3 to 5 cm high, the film was ventilated during the day, and the ventilation was gradually increased with the growth of the seedlings. From mid-late March to early April, pay attention to keeping the seedbed moist. The shed film was removed in mid-April and fertilized, weeded and watered in time.

6. Transplanting seedling management In late April, transplanting was carried out after 4 pm on cloudy or sunny days. Before the seedlings, the seedbed is filled with water to facilitate the reduction of the roots and the roots can bring more soil. Seedlings are now planted to improve the survival rate of transplants. The row spacing of the plants was 20 cm × 30 cm. Before transplanting, apply 4 to 5 tons of decomposed farmyard manure and 0.05% of ternary compound fertilizer with 15% of each compound, and transplant after deep cultivation. After planting, the water is poured, the seedlings are kept dry but not wet, and the pests and diseases are strengthened. At the beginning of June, before the rainy days or before the soil was dry and irrigated, 0.025 tons of urea was applied per mu to promote the growth of seedlings. In the same year, the average height of transplanted seedlings was about 1.5 meters and the ground diameter was 1.5 cm.