Sexual reproduction. In the middle and early June, when the sporophyll leaves are unfolded and the edges are slightly yellow, the leaves are cut back and dried indoors on a plastic sheet or paper. The sporangia are cracked and the spores are dispersed. The spores are collected and stored in the refrigerator. save. The crushed peat or humus is sieved, the seedbed is disinfected with the general tree guard, the sole water is poured, and then the spores are evenly spread on the bed. Seal the bed with a plastic film. After watering, keep the humidity, and after about 2 to 3 months, grow small embryos.
Rootstock breeding. Choose land where there is plenty of sunshine, loose soil, fertile, moist and well-drained land. During the period from late April to early May, wild rhizomes were dug, and rhizomes with more purplish red, buds, and fibrous roots were cut into 30 to 40 cm long rhizome segments. In particular, rhizomes with mixed shoots were selected to facilitate survival. High Yield. After digging roots, it is best to plant them in time to increase the survival rate. After planting, it can be sprayed with a new high-fat film to increase the survival rate. If it cannot be planted with the digging, it should be placed in a damp place or covered with a wet straw curtain. It can be planted every few days.
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