A letter from Mr. Fei Yongfu, Tonglingshan Copper and Iron Mine, Hubei Daye Non-Ferrous Metals Co., Ltd. asked: There is a kind of Belgian azalea that is sold on the market nowadays. There are many colors. I wonder if it is different from Western azaleas. How to manage in daily cultivation? Especially how to grasp after flowering fertilization?
A: Western azaleas were first bred in the Netherlands and Belgium. They were created by the repeated hybrids of Azalea Rhododendron, Azalea Red, and White Azaleas. They are the highest and most beautiful types of flowers and flowers. Its main features are short stature, tight crowns, delicate habits, and fear of sun exposure. From April to May flowering season, the colors are monochromatic, polychromatic, white, bordered, red, bright spots, sandblasting, sprinkled brocade, etc.; the flower shape is mostly double, double and rarely single; the petals are narrow and long. , rounded, straight, back, waves, flying, wrinkling, curling and so on. In recent years, Belgian rhododendrons, which have swept across the country, are a special group of Western rhododendrons. Compared with the general Xiqiao, the flowers are more colorful, the flower shape is more complex, and the flowering period is more durable. From the plant point of view, the appearance is more dignified. The leaves are dark green and pleasant, and the leaves are set on the branches. The branches are semi-open. When they are opened, the flowers are encrusted with crowns and are very lively and beautiful.
The cultivation and management of Rhododendron in Belgium should pay attention to the following aspects: (1) For soil, peat soil, humming soil, sawdust and other mixed soils should be used, or humus soil under broad-leaved forest can be used alone. Controlled between 5.5-6.5, good permeability, no water. (2) The temperature in the indoor or greenhouse in winter should not be lower than 3 °C to 5 °C, otherwise it will be frozen; in the summer, outdoor summer, it is necessary to create a semi-negative and cool environment, and it is best to have intermittent spraying in a large amount of cultivation. Devices to increase the relative air humidity of the small environment. (3) watering, water quality should be acidic, water from March to June need to be watered once a day, or keep the basin soil moist, water in the basin should be drained in a timely manner; from July to August with the dry with the pouring, at the same time Increase the amount of water spray on the leaf surface. From September to October, it is advisable to keep the basin soil moist and increase the amount of water spray on the leaf surface. From November to February of the following year, it is necessary to reduce the amount of water, spray more water, or change the water supply to spray water. (4) Apply fertilization, require thin-fertilizers, and use common brewing grass juice, fish-bowl water, cake-fat water, etc. Avoid using raw fertilizer, big fertilizer, concentrated fertilizer, and do not contaminate the foliage with fertilizer solution, but also on the foliage. A potassium dihydrogen phosphate solution was sprayed at a concentration of 0.2%. (5) Shading, shading should be given from May to October, usually from 9 to 15 in May, from 8 to 16 in June, from July to August from 8 to 17 and September. From 8:00 to 16:00, October from 9 to 15 o'clock, (6) pruning, the seedlings often have to pick the buds to start, promote the development of collaterals, and grow mainly to thin branches.
As for flowering management, flowering should be placed in an indoor ventilated place and maintained at a room temperature of 8°C to 10°C. In the case of home, flowers can bloom for 2 months or more. For the fern azalea can fertilize, my personal opinion is: As long as the flowering time as room temperature or greenhouse temperature in the 10 °C -12 °C above, apply a suitable amount of quick-acting fertilizer without odor, such as 0.2% potassium dihydrogen phosphate solution, Not sticking to leaves and petals, it should be said that it is harmless, and it is also very beneficial to the plant's recovery after growth.
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