In summer, the bamboo blooms, and it will bear seeds. If you want to use the sowing method to propagate the bamboo, you'd better collect the seeds yourself. When flowering every year, artificial pollination: at 9-10 a.m. and 3-4 p.m., this method has a high pollination success rate.
It takes 15 months from pollination to seed maturity, and it takes a long time to wait patiently. At the stage of seed development, we should ensure good ventilation, strengthen the management of water and fertilizer, and promote the plumpness of seed.
After a long wait of 15 months, the seeds can be collected. Select full seeds, immerse them in 40 ℃ warm water for 10 hours, and take them out for standby.
Disinfect the soil to be sown, expose it to the sun or water the disinfectant.
The seeds of balanopsis japonica are large and can be sown on demand with an interval of 2-3cm.
After sowing, control the temperature at 20 ~ 25 ℃, cover with a layer of plastic film, and keep the humidity above 80%. Germinate in 20-25 days. After the leaves grow, they can be planted in pots.
Stem node cutting can be used in spring and autumn, and the best cutting effect is from April to may in spring and September to October in autumn.
Select the full stem, robust growth of the current year's lateral branches, the length of 20-25 cm. Cutting off the leaves at the base, retaining the upper leaflets, pruning the aerial roots, and retaining the shorter part are conducive to absorbing water and promoting the roots.
The cutting soil is mixed with coarse sand, peat or rotten leaf soil.
Insert the prepared branches into the soil, control the temperature at 25 ~ 27 ℃ and higher air humidity, and then take root one month later.
After rooting, the axillary buds on the stem nodes start to sprout. At this time, the maintenance should be strengthened. In order to promote the growth of seedlings, the room temperature should be kept at 10 ℃, and the management of water and fertilizer should be strengthened.
In summer and autumn, the whole section of the lateral branches of large-scale balanopostachys pubescens is cut down, with some air roots, and directly planted in barrels or bowls, which not only has a high survival rate, but also has a fast forming effect. It is one of the most commonly used and simplest methods in the propagation of balanopostachys pubescens.
