Ephedra high quality and high yield cultivation techniques

Ephedra is a traditional Chinese herbal medicine, its root can antiperspirant, branches and leaves can cough cough, cough, phlegm, sweating, has a unique effect on asthma, diuresis, emphysema. The ephedrine extracted from it is exported to Southeast Asia, Europe and the United States and other countries, and its products are in short supply. Owing to the excessive extraction and destruction of wild resources, the resources of ephedra have become exhausted. To this end, the Gansu Provincial Science and Technology Commission initiated the project for artificial cultivation of ephedra. From 1990 to 1999, we conducted a 10-year study and conducted an in-depth discussion on the high-yield and high-yield cultivation techniques of ephedra. 1. Biological characteristics of cultivation Ephedra is a perennial small shrub of the Ephedra family and has the characteristics of drought resistance, cold resistance, and tolerance to barrenness. Fertility temperature of 20 ~ 25 °C, branches vigorous, the temperature above 10 °C can germinate into branches. Therefore, the suitable sowing time is mid-April, and the suitable harvesting period is the best from the end of October to the beginning of November in the third year. 2. Main cultivation techniques 2.1 Selection of good varieties There are 11 species of medicinal ephedra in China. The main varieties of the Hexi Corridor are Ephedra, Equisetum, Ephedra, and Ephedra. Among them, the distribution area of ​​Ephedra, with high quality and good quality, is the main target for the purchase of Mahuang processing plant, and it is also the main species for cultivation. 2.2 Soil Fertility Fertilization Ephedra is best planted in deep, well-drained, nutrient-rich neutral sandy loam. And before sowing, it is necessary to deepen the soil preparation. It is advisable to plunge to a depth of 40 cm to reach deep, fine, flat, solid and uniform. At the same time, it is necessary to combine the site preparation with basal fertilisers, generally more than 5,000 kilograms of farmyard manure in Mushi, 40 to 45 kilograms of standard nitrogen fertilizer and 45 kilograms of potassium dihydrogen phosphate. 2.3 Fine seeding, seedlings and ephedras soaked with warm water at 30°C for 4 hours before sowing for germination. Seeding can be done with drill or hole sowing. The sowing depth is 1.50~2cm. After sowing, it covers 2cm thick river sand, after general broadcast. 10 to 15 days to emerge, 300 acres of sowing, plant spacing 20 cm 20 cm. If you use mulching or seedling transplanting, the effect is better. 2.4 Cultivated Weeding Ephedra is a perennial plant, often accompanied by many weeds, competing with water to compete with the ephedra, and has a great impact on the yield and alkali content of ephedra. Therefore, in order to combine cultivators, timely weeding. 2.5 Actively preventing pests and insect pests is one of the important factors that affect the yield and alkali production of ephedra. Therefore, it is necessary to prevent and control pests in time. Insect pests are mainly aphids, and they are sprayed with 1,000 times Chrysanthemum Chrysanthemum Emulsion or 10 times the 40% methylisosulfide EC. 2.6 timely harvest generally 5 to 6 months for the ephedra vigorous growth period, 9 to 10 months for the accumulation of high ephedrine period, harvesting can not be carried out in the high value period. Seeds of live ephedra are suitable for the end of October or early November of the third year. The regenerated plants that grow after harvest are best taken once every two years. 3 cm of reed should be kept when harvesting to facilitate regeneration.