Introduction of Variety selection and Seedling raising and transplanting techniques of Ephedra

Ephedra is a perennial desert medicinal plant. Ephedrine can be extracted after deep processing and can be used as a compatible preparation of many commonly used medicines. It can also be made into a prescription alone, which is expensive in the international market.

In recent years, due to excessive mining, wild ephedra resources have been greatly damaged, and wild resources are decreasing day by day. In order to protect wild resources and alleviate the contradiction of shortage of raw materials in ephedrine production enterprises, ephedra should be planted artificially. The seeds needed for artificial cultivation of ephedra are obtained by collecting wild ephedra, but the seed of wild ephedra has the phenomenon of large and small years and is difficult to collect. The direct seeding method is used to plant ephedra, which has a low emergence rate and a waste of seeds. therefore, transplanting is generally adopted after raising seedlings. Based on the practice of raising seedlings and planting ephedra in Heshuo County for many years, a set of effective planting methods are summarized as follows:

I. selection of varieties

After planting comparison and considering the authentic nature of medicinal materials, the main variety of blue ephedra was selected. Blue ephedra is the main variety of ephedrine extracted from d-ephedrine, and the alkaloid content can reach 1.3%.

2. Raising seedlings of Ephedra

1. The requirements of nursery land. Sandy soil is the best, PH6.8-8, and the salt content is less than 0.1%.

2. Requirements for land preparation. Every 666.7 square meters, 1500 kg of mature organic fertilizer is applied, turned evenly and watered thoroughly. When the field capacity reaches 80%, make the border surface by 3 meters wide, leave the irrigation ditch in the middle to prepare the ground, flatten the border surface, and wait for sowing.

3. Sowing requirements.

The main results are as follows: (1) the sowing time is in late August, and the general seed is 6mur8 kg / 666.7 m. "

(2) the seeds were soaked in warm soup before sowing. The seeds were soaked in water with the ratio of 2 boiled and 1 cool, stirred evenly, cooled naturally and soaked for 12 hours.

(3) the soaked seeds were slightly dried, mixed with fine sand, scattered evenly on the border surface, covered with 2 mm thick fine soil, covered with plastic film, and shaded by grass curtains or shading nets.

4. Management after emergence. After sowing 6Mel for 7 days, remove the plastic film and replenish water according to the soil condition. When watering, pay attention to using small water to seep to both sides through the ditch, and avoid flooding. When ephedra seedlings grow to 2mi 3cm, pay attention to weeding. When the temperature drops to lOq2, the greenhouse should be covered with plastic film, and pay attention to the ventilation and dehumidification at noon after covering the film. Water should be controlled in the early stage after emergence to promote the growth of seedling roots. When the root length reaches 10 cm, it can be watered according to the dry and wet condition of the soil. In early March of the following year, we increased the noon release, gradually expanded the tuyere, and began to refine the seedlings. By the end of March, the outside temperature was 18Q: 00, and the greenhouse film was removed. The seedlings began to be planted in the field in the middle of April.