Propagation technique of Ligustrum lucidum
I. breeding of improved varieties
1. Seed selection: the suitable time for seed collection is from late November to mid-December in North China, and the trees with strong strength, good posture and strong resistance are selected as the mother trees. In the afternoon on a sunny day, select seeds with high maturity, full seeds, disease-free and insect-free seeds, and dry them in a cool and ventilated place to avoid sun exposure.
two。 Soil preparation: select 2 parts of fertile sandy loam with pH 6.7 to 7.0, 1 part of high quality peat soil, 1 part of field soil, and then add 1.5 kg of diammonium phosphate and 2 to 3 kg of superphosphate per cubic soil. Sowing substrate can also be used to evenly spread 1 to 3 cm thick. The soil preparation can meet the technical requirements of upper sand and lower viscous slightly acidic soil, which lays a good foundation for root growth and cultivation of strong seedlings at seedling stage.
3. Sowing and post-seedling management: the direct harvest of dry seeds according to 15 to 20 kg / mu strip sowing, the greenhouse can be carried out in December. It is generally appropriate for the ground temperature to rise to 14 ℃ to 16 ℃ in the middle of March. The emergence of seedlings is higher when sowing in the open field. It is important to maintain humidity from sowing to seedling emergence, so that you can see wet but not dry. Three months after seedling, organic fertilizer and compound fertilizer were applied in furrow to coordinate the proportion of nutrients, so as to achieve the goal of strong seedling and straight branch.
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How does Ligustrum lucidum breed?
The seedling method of Ligustrum lucidum is: wet sand stratification for about 60 days before sowing in early spring. The row spacing is 15 - 20 cm, the seeding rate is 7.5 - 10 kg per 667 m2, the soil cover is 1 - 1.5 cm, and the grass cover is covered. Generally, germination and emergence begin in mid-April. When seedlings are partially out, they are removed and seedlings are thinned in time. Annual seedlings up to 40 to 60 cm, can be taken out of the nursery to do hedges, such as street trees or garden greening, need to be cultivated separately for 2 to 3 years, when the seedlings are 1.5 to 2 meters high, can be transplanted, big seedlings to bring mud balls, and cut off
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Characteristics and cultivation of Ligustrum lucidum
Scientific name LigustrunlucidumAit, alias ash tree, Oleaceae, privet genus. Large evergreen shrubs or trees, with grayish brown bark, smooth and indehiscent. Leaves 8-12 cm long, leathery luster, Lingdong green, is a rare temperate evergreen broad-leaved trees, trunk erect or two or three trunks, branches obliquely spread, into a wide oval round crown, can be planted as a street tree, resistant to pruning, usually used as a hedge. The wood is fine and fine for cabinetwork. The fruit contains starch to make wine, and it is used as a strong agent.
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