What are the precautions for American ginseng cultivation?

American ginseng is a valuable tonifying medicine, which can replenish qi and nourish yin, relieve insomnia, enhance memory, clear heat and promote fluid and other functions. The main domestic producing areas are in Shaanxi, Heilongjiang and other areas. What are the points for attention in the cultivation of American ginseng?

1. Soil

The cultivation of American ginseng needs to choose a more fertile soil, preferably a relatively loose sandy soil with a lot of organic matter. Suitable for growing in neutral soil, but also requires that the former crop can not be radish and other eggplant fruit crops. American ginseng also needs to choose a shelter zone to affect growth on the one hand.

Second, seed treatment and germination

American ginseng must deal with seeds and accelerate germination in order to disinfect. Soak it in carbendazim for half an hour or so. Then rinse the remaining drugs in clean water, and finally put the seeds in an environment of about 20 degrees to germinate. It can also be directly soaked in potassium permanganate solution for about 15 to 20 minutes to remove and drain water to accelerate germination to improve the resistance and germination speed of seeds.

3. Planting density

American ginseng also has high requirements for planting density, which is generally planted according to the density of row spacing of 30 cm and plant spacing of 20 cm. This density can make the permeability better, which is beneficial to the absorption of nutrients and field management. When planting, small modifications can be made according to the condition of the soil.

4. Temperature

American ginseng has strong cold resistance, but it prefers to grow in a mild and humid environment. The soil temperature can be sown at about 5 to 7 degrees, seedlings can emerge above 10 degrees, 15 to 20 degrees are most suitable for the growth of American ginseng, and flowering above 20 degrees. When planting American ginseng, the temperature needs to be adjusted. American ginseng has a certain degree of cold resistance, no less than ten degrees below zero is generally not frozen to death.

5. Lighting

American ginseng prefers shade and does not require much light. You can't put it in direct sunlight. When planting, you need to build a shade and use refracted light to supplement the light. American ginseng needs more shade in infancy and proper addition of light in adulthood. Light can be added appropriately when the temperature is relatively low in autumn and winter, and shade should be added in summer. Illuminance is generally controlled between 1030% and 30%.

VI. Humidity

American ginseng likes to be moist and resistant, and the humidity needs to be maintained at about 55% when planting. If the lack of water will lead to poor growth. In the stage of growth and development, it is necessary to keep wet by sprinkling water frequently, and do not contain too much water during the overwintering period, otherwise there will be freezing injury.

V7. Fertilization

The fertilizer of American ginseng is mainly bean cake fertilizer and phosphorus and potassium fertilizer, which should be decided according to the fertility of the soil. In the later stage of growth (June to August), appropriate phosphorus and potassium fertilizer and urea are needed, and fertilization is carried out once a month.

8. Diseases and insect pests

If the soil is hardened, American ginseng is prone to bacterial blight and embroidery rot. The control method is to disinfect the soil with 10-15 grams of carbendazim per square meter before planting ginseng to keep the soil loose and drained. If weevil and borer harm ginseng leaves, hit 600 times of parathion or 500 times of carbaryl.

The planting cycle of American ginseng is relatively long (usually 4 to 6 years), there are many things to pay attention to, and it takes more energy to take care of them.