Three main points of seed Propagation of traditional Chinese Medicine Ginseng

Ginseng seed propagation methods, one is direct seeding, do not transplant after sowing, grow continuously for 4 ~ 6 years, thinning seedlings twice, which is the direction of development in the future, the other is transplanting method.

1. Land selection and land preparation are suitable to choose places with leeward and sunny direction, high soil fertility and good ventilation and permeability. Ginseng planting land, it is best to clean up the site in the previous year, ploughing and raking many times, ripening the soil, relaxing for a year, applying farm manure and pesticides to improve soil fertility and eliminate diseases and pests. To make a border with a width of 1m to 1.5m and a length of 20m to 30m, the shading sheds are divided into full shade sheds, double transparent sheds, semi-transparent sheds and so on. Different shed types can be selected according to climate, soil, topography and other conditions.

two。 Ginseng seeds accelerated by seeds belong to the type of incomplete development of embryo structure. Therefore, it must go through the process of post-ripening before it can sprout and emerge. The process of post-ripening can be divided into two processes: morphological post-ripening and physiological post-ripening. The morphological post-ripening stage of ginseng embryo needs 12-18 ℃ temperature change for 3-4 months, and the physiological post-ripening stage needs 2-4 ℃ low temperature for 2-3 months.

(1) the seeds harvested last year were naturally germinated outdoors and began to germinate before the middle of June, and the seeds harvested in the same year were germinated immediately after they were collected. Select leeward to sunny highland, dig deep 35cm pit, wide and long depending on the number of seeds, 1 seed mixed with 3 parts of tidal sand, put into the pit for variable temperature treatment, and then cover the soil about 6cm. Keep proper humidity and check frequently. After 2-3 months, the seeds will crack and sow on the border bed. The seeds can also be stored and sown the following spring. Storage method: put the seeds dried in the shade and mixed with dry sand in a box and put them in a cold and dry place.

(2) Indoor control germination in the room where the temperature can be controlled, control the temperature of the germination box within the range of 10: 20 ℃, when the seed crack rate is more than 95%, store at 0: 5 ℃ at low temperature and sow in the following spring.

3. Sowing and transplanting are generally divided into three types: spring sowing, summer sowing and autumn sowing. Sowing on demand with sowing machine or artificial sowing with eye press is the best way to implement reasonable close planting, plant row spacing 5cm × 4~5cm, soil covering 3~4cm. Ginseng is generally harvested in 6 years, during which it is transplanted once or twice. Spring planting should be carried out in mid-late April, should be finished before overwintering buds germinate, autumn should be planted in mid-late October, should be planted before soil freezing, along with planting, choose disease-free strong seedlings. It is suitable for flat planting in high altitude mountain areas, oblique planting in low altitude plain, and oblique planting of 1-year-old 2-year-old seedlings and 3-year-old seedlings. 1-year-old seedlings were transplanted with row spacing of 15cm × 6cm, covered with soil of 3cm, 2-year-old seedlings with row spacing of 20cm × 7cm, covered with soil of 4cm, and 3-year-old seedlings with row spacing of 25cm × 8cm, covered with soil 5~9cm.