Northern cultivation of Belgian rhododendron
China is the origin of rhododendron, which was introduced to Europe from European countries and crossbred with its local varieties to obtain an excellent horticultural variety, "four Seasons Rhododendron", which is distributed in the Netherlands, Belgium, Denmark, Germany and so on. Belgium is also known as the Belgian rhododendron because of the most varieties.
It likes cool, avoid high temperature and hot; avoid scorching sun, like semi-shade; thin and shallow roots, afraid of dry and waterlogging; avoid thick fertilizer, easy to hurt roots; like weak acid soil, water, avoid salt and alkali; the optimum growth temperature is 20-25 ℃.
The northern climate is cold in winter, hot and dry in summer, and the soil and water are alkaline, which is not suitable for the growth of rhododendron. In order to cultivate cuckoos in the north, conditions suitable for cuckoo growth must be created.
The following points should be noted:
1. Pay attention to shading and moisturizing in spring and summer. Belgian cuckoos prefer semi-overcast and well-ventilated humid environments. They should always sprinkle water on and around the ground to moisturize and shade with 50-70% shade nets.
2. Pay attention to plant pruning in autumn. Belgian rhododendrons can form buds in all seasons. If you want them to blossom before the Spring Festival, they should be pruned from July to August, so that the buds can bloom before the Spring Festival.
3. Attention should be paid to heat preservation in winter. The Belgian rhododendron almost stops growing when the temperature is lower than 10 ℃, so the greenhouse temperature should be higher than 10 ℃.
4. Watering and fertilization should be suitable for fertilizer. Belgian rhododendron root is thin and shallow, afraid of dry and waterlogging, dry leaf tip will scorch, waterlogged leaf color turns yellow, heart leaf curl. 1 ‰ ferrous sulfate can be added when watering, and the fertilization concentration should not exceed 2 ‰.
With the right method, Belgian rhododendrons can also grow flowers in the north.
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Lingyun Baimao tea
In the Lingyun production line of Guangzhou Jingcha Food Co., Ltd., in Dashantun, Jiayou Town, Lingyun County, workers are busy screening the finished black tea that has just been processed. Some are packed, some are busy weighing and registering, and the products are ready to be loaded and shipped to Guangzhou. The head of the company said: since the Jing Tea Food Company was put into production and listed last year, its products have been in short supply and all have been exported to the European Union. Huang Daxiong, general manager of Guangxi Langfu Organic Tea Co., Ltd., expressed his plan to make tea: Lingyun tea has entered the scale and market access system.
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Manufacturing technology of black tea
The manufacturing process of black tea is to kill green, knead, pile and dry. Among them, woodpile is a unique process in the manufacture of black tea, and it is also a key process to form the quality of black tea. The main results are as follows: (1) because the leaves picked by black tea are thick and old and the water content is low, they need to be stir-fried at high temperature and stir evenly, showing dark green. (2) after kneading and killing green leaves out of the pot, immediately knead and twist while it is hot, it is easy to shape a good shape. The method of kneading is the same as that of ordinary black and green tea. (3) the rolled leaves are piled on the bamboo mat, 15 thick.
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