Propagation and cultivation of Polygonatum polygonatum

Propagation method: propagate with rhizome and seed, mainly by rhizome propagation.

1. Select deep, fertile, loose and moist loam for soil selection and preparation. Apply rotten compost or barnyard manure 2500kg every 667m2, turn 25~30cm deeply, and then fine and level it to make a border 1.2m wide.

2. Rhizome propagation in late autumn or early spring late March, the underground rhizome was dug out and cut into small segments with 2-3 nodes and hung for half a day or 1 day to make the wound healed, ditching according to row spacing 20~25cm, ditch depth 6cm, planting seedlings in the ditch according to plant spacing 10~15cm, watering after covering soil 3~5cm, so that the soil could be kept moist, and seedlings could emerge in about 15 days. Plant at the end of autumn, pour frozen water before freezing, and keep the soil moist before emergence in the following spring. The 150kg of planting seedlings is about 667m2.

3. Seed propagation the seeds were harvested in August and the sand storage treatment was carried out immediately. 1 part of seed and 3 parts of wet sand were mixed evenly, and the deep 30~40cm pit was dug in the shade to store. The seeds were taken out before sowing in the next spring, ditched according to the row spacing 10~13cm, ditch depth l~2cm, the seeds were evenly scattered into the ditch, slightly suppressed after covering the soil, watered to keep the soil moist. When the temperature is about 15 ℃, the seedlings will emerge in about 15-20 days. When the seedlings were high 5~10cm, the weak seedlings and over-dense seedlings were thinned and transplanted one year later. Planting in spring or autumn, digging holes according to the distance between rows and plants 20cm × 150n, planting 1 seedling in each hole, covering soil and watering. 667 square meters with seed 1~1.5kg.

Cultivation management:

1. During the period of middle tillage and weeding, the seedlings can loosen the soil and weed frequently, and the soil can be properly cultivated at the root of the seedlings, and the weeds can be pulled in the later stage.

2. When topdressing seedlings with high 10~15cm, light human and animal manure water was applied once, and compost l000kg and superphosphate 10kg were applied every 667m2 from June to July, followed by watering. The amount of fertilizer applied in the second year should be increased appropriately.

3. Where the sun shines directly in intercropping, it is easy to make the leaves yellow and wither ahead of time. Intercropping can make full use of the land and shade, can plant corn on the border of Huangjing, and harvest both grain and medicine.