Dahlia cultivation management method :
The stem of Dahlia is crisp and tender, and it can not withstand the wind and the water. When planting, choose a place with high dryness, good drainage, sunny and leeward, and make it a sorghum. The row spacing is about 1 meter, and the dwarf variety is 40 cm to 50 cm. The stalks of Dahlia are succulent and tender, and pillars should be set up to prevent wind breaks.
Watering should master the principle of dry and re-irrigation. If it suddenly blooms in the summer after continuous cloudy days, it should be sprayed with clean water to the ground and leaves to cool down, otherwise the leaves will be burnt and yellow. When there is no rain in the sky, in addition to watering every day, it should also be sprayed with water to cool down. Apply liquid fertilizer every 10 days after the bud, until the flower buds pass through. Leave 10 cm to 15 cm of the neck before the frost, cut off the branches and leaves, dig up the roots, and dry it for 1 to 2 days, then stack the room for dry sand storage. Store at room temperature around 5C.
Potted dahlia is better to use multiple basins. Use a shallow basin with a large mouth and at the same time, make the drainage hole at the bottom of the basin as large as possible, and put a layer of broken tiles on the bottom to make a drainage layer. The culture soil must contain half of the sand. The last time you change the basin, you need to apply enough base fertilizer to supply sufficient nutrients. The cut flowers are made with dahlia, and the cultivation points are planted in the same place. The plant spacing is 50 cm to 100 cm. The growth season is half a month, and the liquid fertilizer is applied once, and the tops are reserved.
Multi-purpose cutting and sowing and breeding, mainly cutting, usually in September-October.
1. The upper potting time is generally in mid-October, 1-2 plants per pot, and the new high-fat film is sprayed on the surface of the plant after the upper pot, so that the plant grows rapidly;
2. When the seedling grows 10-12 cm high, leave 2 knots to top, and cultivate 6-8 branches per pot. The last topping is carried out 40-50 days before the Spring Festival to control flowering during the Spring Festival;
3, watering: watering 2-3 times a day, you need to properly control the water before flowering;
4. Fertilization: In the early stage, nitrogen fertilizer was mainly applied, and phosphorus and potassium fertilizer were mainly applied in the later stage. Generally, inorganic fertilizer is applied once every 10 days, and organic fertilizer is applied once a month;
5, pest control: regular spraying to protect the feet;
6. Tied bamboo: After the last picking and setting of the branches, begin to tie the bamboo, each piece of bamboo, and remove too many side branches for ventilation;
7, picking buds: When the flower buds grow to the size of peanuts, each branch leaves 2 flower buds, other flower buds remove the flower buds and spray the flowers Zhuang Ti Ling, the petals are large, the flowers are bright, and the flowering period is prolonged;
8. Ding Lei: When the flower buds are red, only one flower bud is left per branch.
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