After ten years of hard work, the researchers of Northeast Forestry University finally made a breakthrough in the research of the medicinal plant Rhodiola alpine. On the basis of revealing the environmental regulation law of salidroside in Rhodiola, they proposed the cultivation model of Alpine Rhodiola with the aim of increasing the production of Salidroside in the field, which has been successfully planted in the field test base.
Alpine Rhodiola rosea, also called Rhodiola rosea and Kurile Rhodiola rosea, is a perennial herb of Rhodiola in the family Crassulaceae. It is mainly distributed in the top of some high mountains in the southeast of Changbai Mountain in Jilin Province and Zhangguangcailing in Heilongjiang Province in China , A typical alpine plant. This medicinal plant has the functions of strengthening and strengthening the body, nourishing and strengthening, and can significantly enhance the body's anti-fatigue, anti-hypoxia, anti-aging and anti-radiation capabilities. It is of great application value in military medicine, aerospace medicine, alpine medicine and sports medicine. Environmentally adaptable drugs. The distribution range of wild alpine Rhodiola is narrow, and with the large-scale adoption of people, the reserves have decreased year by year, which is almost endangered. Although the technology of artificial cultivation of Rhodiola rosea has been greatly developed in recent years, there are always problems such as low output and low content of medicinal active ingredients.
The research team led by Professor Yan Xiufeng of the School of Life Sciences, Northeast Forestry University started in 1997 with the support of the National Natural Science Foundation of China and the Natural Science Foundation of Heilongjiang Province "Environmental Regulation of Salidroside in Medicinal Plant Alpine Rhodiola". The correlation between the main active ingredients in Rhodiola rosea, the basic characteristics of salidroside content, and the environmental factors such as season, light, water and nitrogen nutrition on the regulation of salidroside synthesis and the genetic background was systematically studied. Research.
The study found that there are geographical differences in the content of salidroside in wild alpine Rhodiola, and the age of Rhodiola plants with higher salidroside content is mostly between 9 and 12 years. The soil organic matter content and total nitrogen The content, available potassium content, pH value, etc. all have a significant correlation with salidroside content, of which the pH value has the most significant effect. In the cultivated alpine Rhodiola rosea, the salidroside content has obvious seasonal changes. Except for the one-year-old alpine Rhodiola rosea, the salidroside content is the lowest at the end of July and the beginning of August, and this period happens to be The period of concentrated precipitation and the largest cumulative precipitation. On the basis of revealing this law, the research team conducted an in-depth study on the effect of light intensity and light quality on the content of salidroside in plants in greenhouses and artificially planted medicine nurseries. The results show that the red filter film can significantly increase the content of salidroside. Among them, the growth rate of Rhodiola rosea plants grown for 3 years is 7.13% ～ 67.57%; the increase range of Rhodiola rosea grown for 4 years is 45.45% ～ 55.27% .
Based on the above research results, they proposed the artificial cultivation method of Rhodiola alpine with red filter treatment, water and nutrition control measures, and successfully planted in the field test base. At present, "The cultivation and harvesting method of Rhodiola rosea" has won the national invention patent and won the second prize of Heilongjiang Science and Technology Progress Award.
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