Choose acid sandy loam with sufficient light, deep soil layer, rich humus, strong permeability and convenient irrigation and drainage as the cultivation nursery. In the autumn and winter of the previous year, all the nurseries were reclaimed, and pits were dug according to the specifications of row spacing 1m× 1.5m (two years later, when the plants are long, thick and tall, every other plant will be planted, so that the row spacing becomes 2m× 1.5m), and the planting hole is 0.4m×0.4m×0.4m. ..

Apply 2-3 kg of farm manure (pig manure and cow dung) to each hole, and 0.5 kg of phosphate fertilizer as base fertilizer. Mix the base fertilizer with the surface loam and fill it in the pit. Fertilizer is easily absorbed by saplings after being eroded and fermented by winter snow and spring rain.

Step 2 transplant

Transplanting is best when the sap has not flowed out or just flowed out, usually from early February to early March. When picking seedlings, leave as many roots as possible and do less harm to the roots. Sow as soon as possible after taking it. If you need to adjust seedlings from other places, pay attention to moisturizing to prevent seedlings from dehydration. After planting, the soil should be compacted and watered once to make the roots of seedlings closely connected with the soil.

3. Water and fertilizer management

After transplanting, if the nursery is flooded by heavy rain, ditch should be dug for drainage. In case of drought, use water to fight drought.

In addition to applying sufficient base fertilizer, apply fertilizer three times a year, that is, apply 0. 1-0.3 kg of available nitrogen fertilizer to each plant in late March to promote its growth and multiple shoots; In July, each plant was applied with 0. 1-0.3 kg of effective phosphorus and potassium fertilizer to improve its drought resistance; From June+10 in 5438, 2-3 kilograms of organic fertilizer (such as farmyard manure) was applied to each plant to improve the cold resistance and prepare for overwintering.

4. Dressing and shaping

Osmanthus fragrans has strong germination ability and has the characteristics of naturally forming shrubs. It is shot twice a year, in spring and autumn respectively. If it is not pruned and germinated in time, it is difficult to cultivate tall plants, and it is easy to form the phenomenon of dense upper branches and sparse lower branches.

When pruning, except for those who are not good because of the growth of trees and branches, we should give priority to thinning branches, only properly thinning out the peripheral branches that are too dense, and cutting off the overgrown branches and pests and diseases to improve the ventilation and light transmission conditions of plants. It is necessary to erase the sprouting branches from the base of the trunk in time to avoid consuming nutrients in the tree and disturbing the tree shape.

5, loosening soil and weeding

Intertillage in spring and autumn should be done separately, combined with fertilization to improve soil structure. Laying the foundation once before wintering and brushing the trunk white once can enhance the cold resistance. Weed 2-3 times a year to avoid the competition between weeds and seedlings for water, fertilizer and light.

Extended data

Osmanthus fragrans adapts to subtropical climate. Sexual preference is warm and humid. The average temperature in the planting area is 14-28℃, the average temperature in July is 24-28℃, the average temperature in June is above 0℃, the minimum temperature is-13℃, and the optimum growth temperature is 15-28℃.

Humidity is very important for the growth and development of osmanthus fragrans. The annual average humidity is 75%-85%, and the annual precipitation is about 1 1,000 mm. Especially when young trees and adults bloom, they need more water. If there is drought, it will affect flowering, and strong sunshine and shade are not good for their growth. Generally they need 6-8 hours of light every day.

Osmanthus fragrans likes warmth, strong resistance, high temperature resistance and cold resistance. Therefore, it can overwinter in the open air in the areas south of Qinling Mountains and Huaihe River in China. Osmanthus fragrans likes sunshine, but also can resist shade. In full light, it has lush foliage and dense flowers. In the shade, its branches and leaves are sparse and flowers are scarce. If potted indoors in the north, it is especially necessary to pay attention to sufficient light to facilitate growth and flower bud formation.

Osmanthus fragrans is relatively humid, and it is forbidden to accumulate water, but it also has certain drought resistance. Osmanthus fragrans is not strict with the soil. Except alkaline soil and low-lying land or soil that is too sticky and poorly drained, it can generally grow, but slightly acidic sandy loam with deep soil layer, loose and fertile soil and good drainage is the most suitable.

Osmanthus fragrans is resistant to chlorine, sulfur dioxide, hydrogen fluoride and other harmful gases, and has strong dust adsorption ability, so it is often used in cities and industrial and mining areas. ?

Osmanthus fragrans is suitable for planting in ventilated and light-transmitting places; I like a clean and ventilated environment, and I can't bear the harm of smoke and dust. I often can't blossom after being victimized. Afraid of waterlogging, if waterlogging damages, the root system will be black and rotten, the leaves will be scorched at the tip first, and then the whole leaves will wither and fall off, leading to the death of the whole plant; Not very cold-tolerant, but compared with other evergreen broad-leaved tree species, it is still a relatively cold-tolerant tree species.

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