What kind of soil is rhododendron suitable for?
The choice of soil is very important for the growth and development of rhododendron. There are many methods for the cultivation of rhododendron, which vary from variety to variety, but they must have the following conditions: loose, unobstructed drainage, good ventilation, acidic soil, rich humus and sufficient base fertilizer. Usually azaleas thrive when living in acidic loam. If they are in alkaline soil, they soon die of leaf yellow exhaustion. Rhododendron is regarded as an indicator of acidic soil. Generally speaking, rotten leaf soil belongs to acid soil, and pine leaf humus soil is the best, which is an ideal culture soil for planting rhododendron. You can dig under the pine and cypress forest in the mountain area, or you can take soil under the ground where there are many pine and cypress trees in the courtyard. And add appropriate amount of sulfur powder and alum before use to improve its acidity before use. The soil with high humus content is the most suitable for the growth of rhododendron. There is a lot of humus, which can replenish the nutrients in the soil in time, improve the soil structure, preserve soil water, keep fertilizer, aerate, absorb heat and keep heat. It can also reduce the harm of toxic substances in the soil and promote the root system of rhododendron to expand in all directions.
Tongguanshan in Yixing, Jiangsu Province and Montenegro mud, a new product in Fenghua, Zhejiang Province, are most suitable for the growth and development of rhododendron. The cultivated soil can also be self-made. Take 2 parts of weathered mountain topsoil, 1 part of deciduous leaves, 1 part of dry dung of herbivores, mix for 1 year, sift out impurities, and then use. It can also be piled up with 3 parts of mountain skin soil, 3 parts of horse dung, 3 parts of deciduous weeds and 1 part of human feces and urine, which can be screened and used after 1-2 years. The prepared culture soil should be stored indoors to prevent fertility loss due to sun and rain.
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Management of soilless propagation of rhododendron
The propagation method of rhododendron can be propagated by cutting, grafting, striping and sowing, while cutting and grafting are widely used, and the excellent characteristics of crystal seeds can be maintained. The sowing method is mainly used for cross breeding to select excellent individual plants. Most of the cuttings are semi-lignified branches, which can be carried out from May to August. Often use river sand, perlite and peat as the matrix. After planting the flowerpot, cover it with a plastic bag and put it in a half-shaded place. Spray water once a day in the morning and evening within a week, and keep the pot soil moist after that. At the temperature of 20-25 ℃, the general variety is about 4.
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What kind of fertilizer is good for azaleas?
Rhododendron is a fertilizer-loving plant, which needs not only nitrogen, phosphorus, potassium and other main nutrient elements, but also boron: copper, molybdenum, zinc and other trace elements. Azaleas should use fertilizers with mild fertility and long fertilizer efficiency. Household cuckoos can use horns, sheep horns and animal hoof slices, which contain 12% 15% nitrogen and 0.2% phosphorus, as well as a small amount of potassium and trace elements. The thin hoof piece can be effective after 1 month, the thick hoof horn can be seen after 2 months, and the fertility can be maintained for 6 Mel for 8 months. When in use, it can be combined with changing the basin and pouring the basin to bury the hoof into the edge or bottom of the basin.
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