The best land for planting osmanthus fragrans seedlings is sandy land with acidic soil and places with thick soil layer, abundant sunshine and convenient irrigation and drainage. Before sowing, it is best to plough, dig sweet-scented osmanthus seedling holes according to the plant spacing of 1 m, and then use farmyard manure and phosphate fertilizer as the base fertilizer of each hole soil according to the ratio of 20: 5. This is the first step of osmanthus planting technology.
2, timely transplanting
The best time to transplant osmanthus fragrans is February or March. It is spring at this time, and the saplings are more active. Moreover, the selection of seedlings should be to leave more seedlings in the roots, and the survival rate of seedlings with less rhizomes and more wounds will be greatly reduced. After the seedlings are buried in the soil, keep moisture to prevent the seedlings from dehydration.
3. Fertilizer irrigation
After the seedlings are transplanted, they only need to be fertilized three times a day. In March, 0.2 kg nitrogen fertilizer can be applied to each plant, which can make the seedlings grow and sprout faster. In July, 0.2 kg of phosphorus and potassium fertilizer can be applied to each plant, which can enhance the drought resistance of seedlings. In June 5438+ 10, 2 kg of organic fertilizer can be applied to each plant, which can enhance the cold resistance of seedlings.
4, plastic pruning
Pruning of osmanthus trees is carried out once a year in spring and autumn. Only short branches need to be left on each side branch, and the weaker branches and branches suffering from insect pests are cut off. This can make full use of the nutrients absorbed by trees. In order to ensure the overall appearance of osmanthus trees and the uniform growth of each part.
5. Weeding and reclaiming land
Tilling the land planted with osmanthus fragrans in spring and autumn every year can effectively improve the soil structure. In late autumn and early winter, it is necessary to wrap the roots of osmanthus fragrans with plastic film and paint the main branches white, which can enhance the cold resistance of trees. Weeding frequency is about 3 times a year, which can prevent excessive weeds from consuming organic matter in the soil.
6, pest control
The main pests and diseases of osmanthus fragrans are Chilo suppressalis, scale insects, Fusarium wilt, soot disease and so on. The frequent periods of these diseases are mostly from May to September. 80% 20 times dichlorvos emulsion, 90% 1000 times trichlorfon solution, 2.5% 2,500 times fenvalerate EC and10% 2,000 times cypermethrin solution can be used for protection and treatment.