The stem nodes of Solanum nigrum are easy to produce adventitious roots, which can be propagated by cutting branches. Choose robust sections, cut each section into two sections, plant them on pre-arranged seedbeds with leaves, or keep them moist with sand beds, or plant them in water tanks for about 65,438+00 days to take root, and then transplant and plant them. In frost-free areas, cutting propagation can be carried out all year round.
When planting in pieces, choose good land and apply soil miscellaneous fertilizer as base fertilizer, and apply 3000 ~ 4000 kg per 667㎡. Prepare the border soil, the width of the border is about 1.2 ~ 1.4m, and plant holes at the row spacing of 30 ~ 40cm× 30 ~ 40cm, and rooting cuttings can be planted in the holes, either singly or in pairs. Cabbage has strong drought tolerance, but sufficient water supply is beneficial to the growth of stems and leaves, which can increase yield and improve quality. Pay attention to keep the soil moist and fertilize the soil, and apply 1000kg dilute chicken manure water or 10 ~ 12kg urea every 667m 2. Generally, young stems can be picked when they are about 15cm long. The more times you pick it, the more vigorous the branches are. Every time 1 time, the yield can reach 600-800kg per 667m2. It grows rapidly at high temperature, and can be picked 15 days 1 time; In winter, the temperature is low and the growth is slow, and it can be harvested in June 1 time. When harvesting, pick the tender buds with 5-6 leaves at the top, and leave two nodes at the base so that the new buds can continue to germinate for the next picking.
In northern China, Gynura bicolor can't overwinter in the open field. In winter, plants can be moved into greenhouses for production, or the whole plant of heel in can be planted in sunny fields or greenhouses, and then cut in open fields in the following spring.
Solanum nigrum has few pests and diseases, and generally does not need medication.