2. China daffodils need to be planted for 2-3 years to blossom. Cultivation in September-June, autumn 10, leaf withering in May of the following year, and dormant as bulbs in June, during which bulbs continue to carry out physiological and biochemical activities. Breeding with lateral balls, digging balls after the dormancy period of the second year, and after the storage period, the big balls bloom in winter, generally L balls and L branches, such as Chongming Narcissus on the market. Propagation with lateral buds, digging balls after dormancy in the second year, planting in autumn and flowering in winter, is also an L-ball L-branch flower. From the seeds planted for 65,438+0 years (spanning 2 years) and the seeds planted for 2 years (spanning 3 years), the large and excellent seeds were selected as seeds, castrated in autumn, replanted and carefully cultivated. In the second year, 1 bulb with lateral bulbs and multi-branched flowers can be obtained, that is, commercial bulbs.
3. The growth and development stages of narcissus need different environmental conditions (such as vegetative growth stage, bulb expansion stage, flower bud differentiation stage and flowering stage). Its roots, stems, leaves and flowers have different requirements for environmental conditions. Narcissus likes cold climate during its growing period, with the optimum temperature of 10-20℃ and the minimum temperature of 0℃. Bulbs swell in spring and flower buds differentiate at high temperature (above 26℃) after drying. After dormancy, bulbs can grow roots at high temperature, but they will not grow leaves, and they will grow leaves with the decrease of temperature. When the temperature is about 6- 10℃, the flower moss will be drawn. During flowering, if the temperature is too high, the flowers will not bloom well or wither. When the temperature is suitable, it likes light and is more resistant to shade. For cultivated flowering bulbs, long-term light can inhibit the growth of leaves and help flowers to elongate, which is higher than leaves. In the growing period, it is rich in water, and it will grow poorly without water. It needs to be fully dried in the late growth stage, otherwise it will affect bud differentiation. The soil should be loose, soft, neutral or slightly acidic.
4. Generally, germination can be seen in 2-4 days. When the temperature is 5- 12℃, it blooms in 40 days; If the room temperature is kept at 65438 05℃, it will bloom in 28-30 days; At room temperature 18-20℃, it will bloom in 23-25 days. The room temperature in the Pearl River Delta region/kloc-0 from mid-October to mid-February is about 16-20℃, and flowers can bloom in 20-25 days under normal circumstances.
5. The height of adult plants is 20-30cm. Under normal circumstances, it blooms in about 25 days, with the high temperature slightly earlier and the low temperature slightly later, and the flowering period is generally 10- 15 days. In order to make flowers grow sturdily, we should bask in the sun during the day. In order to avoid frostbite, please don't put flowers in places with low temperature. Water temperature controls flowering period.