1 intertillage weeding: At present, most nurseries still use manual intertillage weeding. Tree tray with trunk as the center and diameter of 1 m, with emphasis on loosening soil and weeding. Mechanical intertillage with small tractors. Generally, mechanical intertillage can be used to weed in large seedling areas with row spacing 1 m or more. The small seedling area can be carried out two or three times a month. In addition, in order to prevent soil hardening after irrigation or rainfall, intertillage should be carried out to loosen the soil to facilitate the growth of seedlings.
Water drainage: Osmanthus fragrans is mainly watered within one month after new planting and in the summer of the same year. The newly planted osmanthus must be watered, which can be watered according to the weather and site conditions. Conditionally spray water on the crown of the plant to maintain a certain air humidity and reduce the evaporation of water from the seedlings. In addition, in order to promote the early flowering of osmanthus fragrans, when the flower buds begin to germinate in mid-September, appropriate amount of water should be used to keep the soil moist. Osmanthus fragrans seedlings do not need a lot of watering during normal maintenance, but can be properly watered in particularly dry summer and autumn. Osmanthus fragrans is not tolerant to waterlogging, and poor drainage will lead to a large number of deciduous roots rotting or even dying. Drainage or transplanting waterlogged plants in time and adding a certain amount of sand for planting can promote the growth of new roots.
3. Rational fertilization: Fertilize the seedlings three to four times a year on the principle of applying nitrogen thinly and frequently. In early spring, before the buds began to swell, the roots began to absorb fertilizer. Therefore, in early spring, organic fertilizer should be applied to the tree tray to promote the growth of spring shoots. Spring shoots are branches that bloom in autumn that year. When the buds in spring grow strong, there will be more flowers in the future. In order to restore the tree vigor and supplement the nutrition after flowering in autumn, inorganic fertilizer or garbage miscellaneous fertilizer should be applied in early winter. Fertilization can be applied once or twice according to the growth of osmanthus fragrans. The newly transplanted osmanthus fragrans root system has weak absorption capacity, so it is not suitable for topdressing prematurely. The base fertilizer of the transplant pit should be mixed with soil before covering it. The root system can't be in direct contact with fertilizer, so as not to damage the root system and affect the survival rate.
Fertilizer must be applied where the roots can absorb it. Seedling roots are easy to survive after centralized transplanting, so fertilization in nursery should not be too far away from seedling crown, otherwise the roots will expand outward. But it is not suitable to be applied under the trunk, which is not conducive to the absorption of fertilizer.