It is a perennial herbaceous flower. It is generally flowering in spring and autumn. The sapling is an ornamental plant. The culture of paulownia is not technically demanding, but it also needs to be kept in mind. Please refer to this page for knowledge about the culture method of paulownia.
Introduction of Yantong
Erythrina: Phyllostachys, perennial herb. Also known as the Snowy, it is a perennial bulbous herbaceous flower of the family. With large fleshy tubers, the ground stem is very short, the leaves are long oval, densely fluffy, slightly fleshy, leaves opposite, flower top or twin, corolla bell-shaped, sharp round, colorful, velvety, red and pink Rose red, purple, blue and complex colors, the flower shape is strange, it is an excellent potted plant.
Morphological characteristics of sylvestris
Leaves heart-shaped, hypertrophic and thick, with long petiole, rooted from roots. In spring and summer, the leaves are stalked with flowers, one stem, and one stalk, the corolla is long tubular, the petals are thick, the raw luster, five lobes, white, and the leaves are densely fluffy. With large fleshy tubers, the ground stem is very short, the leaves are long oval, densely fluffy, slightly fleshy, leaves opposite, flower top or twin, corolla bell-shaped, sharp round, colorful, velvety, red and pink Rose red, purple, blue and complex colors, the flower shape is strange, it is an excellent potted plant.
Cultivation techniques of paulownia
1 Transplanting 3 parts of humus or peat soil in potted plants, plus 1 part perlite, 1 part of river sand and a small amount of base fertilizer. The soil should be loose, slightly acidic, and the first transplant should be carried out when the seedlings grow 1 to 2 true leaves. When the seedlings grow 3 to 4 true leaves, they are transplanted to a 10 cm pot. When the plants grow up, switch to a pot of about 15 cm. Potted plants should not be too deep, so it is better not to bury the first pair of true leaves in the soil. If the planting is too deep, it will cause poor growth or perishable.
2 Illumination Winter seedlings need to be sunny, and they should be gradually shaded from April, and the shading time will be shortened during the fruiting period.
3 Fertilizer management After transplanting to a 10 cm inch pot for 10 days, loosen the soil once and apply the decomposed bean cake water. To apply the base fertilizer, place the decomposed cow dung or a small amount of bone powder or superphosphate on the bottom of the basin, and then cover the coarse-grained soil. After fertilization, the leaves should be sprayed with water and watered less after flowering. The plants stop watering after entering dormancy.
Way of breeding
Reproductive technology
1 Seeding method Dalbergia can be obtained by artificially assisted pollination. The seeds are small, with 2.5-30,000 capsules per gram. After sowing, about 5000-6000 plants can be produced. It can be sown all year round. It is best to use from August to September. The cultivated soil to be sown should be loose, fertile and well-drained slightly acidic soil, and a small amount of superphosphate is added.
2 Bud insertion After the dragon ball is dormant, it is carried out during spring germination. Leave the main bud in the center of the bulb, and remove the remaining side buds. Insert the back cover with a plastic film to keep the temperature at 20 °C. Roots can be rooted after half a month.
3 Leaf Insert The mature leaves are cut with petiole and inserted obliquely into the sand bed to maintain the temperature at 20 °C. After about 3 weeks, the incision heals and roots, and a small bulb is formed, which can be cut and planted in the upper pot.
4 Cutting the bulbs When the new shoots grow out in the early spring, the new shoots are cut into several pieces to ensure that each piece has a bud. The wound is smeared with sulfur powder or charcoal powder. After drying, it is planted in the upper pot.
5 Tissue culture method select the young leaves or stem segments of D. sylvestris, disinfected by conventional methods, cut the young leaves into l cm squares, cut the stem segments into 0. 8 -1 cm long sections, inoculate MS + BA 2.0 mg /L +NAA 0.2 mg / liter of medium, the culture temperature is 25 ± 3 ° C, 10 -20 hours of light per day, light intensity 1500 - 2000 lux, 45 days or so, leaves and stem segments can grow out of the indefinite Buds can be propagated once every 50 days.
