When should cauliflower be planted in spring? When should cauliflower be planted in spring?
2. Suitable for sowing and planting. In Hana Haruna, the seedlings should be cultivated in the greenhouse or sunshine bed in late June and 5438+February, and planted in the nature reserve in early and middle March. Open field cultivation should be carried out from late March to early April, not too early or too late. Autumn cauliflower should be planted strictly, generally from late June to early July, from late July to early August, and from the end of September to the end of 10.
3. Cultivate healthy seedlings of suitable age. Seedling raising is carried out in a nutrition pot, and the germination stage and seedling stage of autumn cauliflower are in high temperature and rainy season, so covering and shading measures should be taken. Generally, the seedling age of autumn cauliflower is 25-30 days with 5-6 leaves, while that of Hana Haruna is 70-80 days with 5-7 leaves.
4. Ensure the supply of water and fertilizer. After the cauliflower is planted, combined with slow seedling watering, urea 10 kg per mu can be applied topdressing, and then squat down. When the diameter of the flower ball is about 3 cm, end the squatting position, apply 25 kg of urea along with the watering mu, and then water every 4-5 days to keep the border surface moist.
5. Pay attention to insect prevention. Spraying 2.5% triadimefon 5000 times and 20% metronidazole 2000 times can control aphids and cabbage caterpillar, and be careful not to use highly toxic pesticides.
6. Cover flowers in time and harvest them in time. When the flower ball is formed, the method of folding the leaves inward can be used to cover the flower ball carefully in time. When the flower ball is fully grown, white, dense in texture, flat in surface, and the edge has not yet spread, it is the harvest time.