The top grade of Tianma in Zhaotong Tianma is famous for its unique quality at home and abroad. It is mainly due to the unique geographical, climatic, soil and other ecological conditions that cannot be replicated. The ancient "Shen Nong's Herbal Classic" records: Tianma "long service and strength, Changyin fat health, light body extension", Li Shizhen in the "Compendium of Materia Medica" records: Tianma "treatment of wind, dizziness, headache", was respected by ancient doctors "Treasures." Zhaotong Tianma is a high-quality, compact and full-bodied, and is the leader of its kind. It is calm, brain-enhancing and intelligent. It is especially suitable for mental workers in modern life.

After testing, the gastrodin content in Zhaotong Tianma ranks first in the country, ranging from 0.44% to 1.79%, with an average content of 0.92%. It contains 29 kinds of inorganic elements such as trace elements and macro elements, among which the essential trace elements of the human body are zinc. 14 kinds of copper, iron, manganese, cobalt, nickel, molybdenum, chromium, antimony, vanadium, tin, silicon, antimony and selenium, especially the content of zinc, manganese and copper inorganic elements called trace elements related to life. It is also extremely high. Zhaotong Tianma is well known both at home and abroad for its high medicinal health value and unique quality. The unrepeatable geographical environment of Zhaotong is located at 105°52′-105°19′ east longitude and 26°34′-28°40′ north latitude. It is located in the northeastern part of Yunnan Province. It has a vertical and horizontal gully, steep terrain, high mountains and deep valleys, and many mountains. The dam is small and is a typical mountain city. Zhaotong Tianma has grown in the mountains and forests, and has become a tribute to the capital. The roots of the main production areas are the streams, the towering trees, the birds and flowers, the fresh air, and the atmosphere full of primitive and mysterious atmosphere. Natural environment. Here is the transition zone from the Sichuan Basin to the Yunnan-Guizhou Plateau. The cold and warm air meets here and merges to form the Kunming quasi-stationary front climate zone. It is rainy all year round, plus the original jungle is not destroyed, biodiversity is preserved, natural humus soil, etc. It provides an excellent environment for the growth of gastrodia. Unique under-forest wild-like planting Zhaotong Tianma Whether it is wild natural growth or cultivation under artificial forest, the growth cycle is completed under natural forest. No fertilizer, pesticides and herbicides are applied during the growth process. Zhaotong Tianmayuan is maintained. Ecological, non-polluting and authentic, while ensuring the quality of wild-type gastrodia without destroying the ecological environment, is a necessary condition for sustainable development. At present, the existing planting area of ​​Zhaotong Tianma imitation wild forest in Zhaotong City has reached 150,000 mu, the output value of planting industry has reached 2 billion yuan, and the processing output value has reached 4 billion yuan. Traditional Tianma processing technology Zhaotong Tianma's processing is a traditional processing technology. The harvesting period of Tianma is in November every year. After the fresh Tianma is excavated, it is graded and washed. Different levels of Tianma tubers are placed in bamboo steamer or wooden rice cooker. . Steam for 8-15 minutes, steam to the heart as well, take out the dry water, put it in the baking room or low-sulphur coal fire with low sulfur, the temperature is controlled at 60 °C -80 °C, while baking While turning, while pinching the side by hand, the gastrodia is shaped until it is dried. It has been proved that the medicinal ingredients of the gastrodia products processed by this method are not damaged.

Zhaotong Tianma quality technical requirements (a) varieties. Wu Tianma, Huang Tianma. (2) Planting range. Suitable planting area (3) cultivation techniques between 1400 and 2800 meters above sea level. 1. Bacteria: Fagaceae, Birch, Rosaceae trees. 2. Strain: Zhaotong's local quality bacteria. 3. Planting: There are two methods of sexual reproduction and asexual reproduction, all of which are standardized planting under the forest. 4. Growth cycle: mature arrowhead (winter hemp) planted for two years (including two years). 5. Harvest time: Every year before and after the winter solstice. (4) Processing. After the gastrodia is excavated, it is washed in stages, steamed to the center with steam, and dried at 60 ° C to 80 ° C. (5) Quality characteristics. The appearance is mainly broad-ovate and oval, and a few are elliptical and oblong; slightly curved and slightly flat. Hard and not easy to break. According to the dry tuber size, it is divided into four grades, namely: special grade, first grade, second grade and third grade. The dried product contains gastrodin (C13H1807) ≥ 0.4% and moisture content less than 13%.