The Propagation method of Tulip

The propagation methods of tulips include bulb reproduction, seed reproduction and tissue culture. the latter two methods take a long time (seed reproduction takes 5 years to blossom) and have a high cost. in addition to cultivating new varieties, detoxification and other special uses, we generally use the method of ball propagation, let's take a look!

Seed propagation of tulip

Seeds can be used in cross breeding. Seeds do not dormant, but low temperature is needed for germination. the suitable low temperature is about 5C, germination is delayed above 10C, and no germination is above 25C. Under suitable conditions, the germination rate can reach more than 90%. It can germinate 40-45 days after sowing. After germination, the seedlings were transferred to 23C after about 70 days at 13C, which could accelerate the ripening of bulbs. In Nanjing area, the cold frame was sown in autumn in November, and the natural low temperature in winter was used to sprout in mid-February of the next spring. It takes about 135 days from germination to harvest. During dormancy in summer, bulbs were dug up and stored under 20C~25C, then planted in autumn, and flowered after 4 or 5 years of cultivation.

Bulbous propagation of tulips

1. Soil selection: tulips like sandy loam with loose soil and good air permeability, and the place with good drainage, plenty of sunshine and fertile soil should be selected for ball reproduction, and the best pH is between 6.6 and 7. Soil preparation should be carried out before planting, 8-10 cubic meters of rotten farm manure should be applied before land preparation, and then rotary ploughing with tractors should be used to stir the soil and farm manure evenly.

2. Bulb planting: when the soil temperature of 15 cm soil layer dropped to about 9 ℃ in autumn, small bulbs were planted with row spacing of 7 cm × 11 cm, and the thickness of the covered soil was 4-5 times that of the bulb. Immediately after planting, the bulbs were watered and covered with straw to facilitate the seed bulbs to survive the winter in the field. The mulch was opened at the beginning of March, and the new buds exposed and began to grow.

3. Disease prevention and fertilization: after the soil is thawed in early spring, new buds sprout, spray once a week to prevent diseases and insects, especially aphids, topdressing once every two weeks, and irrigate roots with calcium nitrate or potassium nitrate 2-5% liquid fertilizer until 4 weeks before dormancy.