Cutting propagation of golden bract flower
Golden bract flower is mainly propagated by cutting. The cutting time can be all year round, and April is the best. Select the branches with strong growth and short internodes as cuttings, remove the lower leaves and retain the top leaves, with a length of about 8-10cm. Insert them in plain sand, shade and moisturize them, and take root after about half a month. They can blossom in the same year when cutting, or they can be cut in water p>
When cutting golden bud flower seedlings into the basin, first prepare pond mud and green bran ash, mix them in the ratio of 2:1, and add chicken manure as base fertilizer. After the seedlings grow for a week, they can be slowly given an appropriate amount of light. After the seedlings survive, they need to pick the heart, leaving 1 or 2 sections to pick the heart for the first time. After the new shoots grow 2-3 pairs of leaves, they can keep a pair of leaves to pick the heart, and they can bloom 2 or 3 months after stopping picking the heart. In addition, 500ppm Paclobutrazol or 2000ppm dwarf can be injected into roots to prevent too long internodes and too high plants after heart picking p>
Other propagation methods of golden bract flower
In addition, in order to promote the rapid propagation of golden bract flower, the tissue culture method of golden bract flower stem tip and axillary bud can also be used for propagation. However, this method is difficult, professional and not suitable for family operation p>
Precautions for propagation of golden bract flower
In flowering period and winter greenhouse, small black mildew spots often appear on the flowers due to poor ventilation. This kind of mildew is actually the excreta of pink scale insects. Once the adult density is too high, these dense black spots will appear, resulting in the gradual mildew of golden bracts. In addition, red wax frying and aphid damage often occur, which directly affects the growth and ornamental effect of golden bracts. In case of pests, you can use 40% Omethoate 1500 times liquid to spray continuously
Generally, the overwintering temperature of golden bracts should not be lower than 10 ℃, otherwise the leaves are easy to turn yellow and wither. If the temperature can be above 15 ℃, they can bloom in winter. In the spring of the next year, the stems of old plants for more than 2 years have been semi lignified and their growth is weak. At this time, cutting should be renewed< span>