The Three Gorges of the Yangtze River, Shennongjia, Changbai Mountain, Yunnan-Guizhou Plateau and Dabie Mountain are the producing areas of gastrodia elata in China. Among them, the annual output of gastrodia elata in Shennongjia, Three Gorges of the Yangtze River is the highest. Yunnan-Guizhou Plateau mainly produces black-red hybrid gastrodia elata and red gastrodia elata with good quality, which are mainly planted in Nanchong in southern Sichuan and northwest Guizhou. The planting temperature of gastrodia elata should be strictly controlled. The optimum growth temperature of Gastrodia elata is 15℃-25℃, and it is not conducive to growth above 30℃ or below 5℃.

First, the origin of Gastrodia elata

1, Shennongjia, Three Gorges of the Yangtze River

Shennongjia, the Three Gorges of the Yangtze River, has the highest annual gastrodia elata production, which is the largest area in China. This area includes Shiyan, the Three Gorges in Yichang, Hubei and the eastern part of Chongqing, and the quality of gastrodia elata planted in this area is also very good.

2. Changbai Mountain

Changbai Mountain is one of the producing areas of Gastrodia elata, which is mainly planted in North Korea and near Fusong, Jilin. The temperature and environment in these areas are suitable for planting gastrodia elata, and the quality of gastrodia elata planted by them is high.

3. Yungui Plateau

Yunnan-Guizhou Plateau is one of the producing areas of gastrodia elata, which mainly produces black-red hybrid gastrodia elata and red gastrodia elata, mainly planted in Nanchong, southern Sichuan and northwest Guizhou.

4. Dabie Mountain

Dabie Mountain mainly includes southern Henan and Huanggang, Hubei. The output of gastrodia elata is increasing year by year, and the quality is also very good.

Second, the main points of gastrodia elata planting management

1. Gastrodia elata should be protected from direct sunlight from planting to harvesting, and shed should be set up to cool down when the sun shines to ensure the normal growth of Gastrodia elata, so artificial cultivation of Gastrodia elata should be carried out indoors, in the basement and in the greenhouse, and shed should be set up to cool down at the same time.

2. The suitable germination temperature of gastrodia elata seeds is 22℃-25℃. If the temperature is low at the beginning of sowing, plastic film or straw should be covered to raise the ground temperature. The optimum growth temperature of Gastrodia elata is 15℃-25℃. When the temperature exceeds 30℃, the growth of Armillaria mellea and Gastrodia elata will be seriously inhibited. When the temperature is lower than 65438 05℃, the tuber growth rate of Gastrodia elata will be inhibited or even stopped. Below 5℃, it will freeze and rot. Temperature control measures need to be taken.

3, planting gastrodia elata requires that the average relative humidity should be controlled at about 80%, and the planted sand should always be moist, so that it is better to sprinkle frequently and less, rather than drought. The soil humidity should be controlled at about 60% from April to June, and June to August is the peak season for the growth of Gastrodia elata, so it is appropriate to keep water and cool down. Humidity below 60% is not conducive to the growth of gastrodia elata, and more than 80% is easy to cause tuber rot. September is the late stage of nutrient accumulation and physiological maturity of Gastrodia elata, and the soil moisture should be controlled below 40%.