Key points of planting techniques of Gastrodia elata

Gastrodia elata is a perennial parasitic herb of Orchidaceae, and its growth and development are inseparable from Armillaria mellea. This typical heterotrophic higher plant has a set of unique technical requirements for Gastrodia elata cultivation. Because of the lack of Armillaria mellea to provide nutrition for it, the tuber of Gastrodia elata slowly shrank and died out within 3 years. Let's take a look at the key points of Gastrodia elata planting techniques:

1. Time requirements for key points of planting techniques of Gastrodia elata:

Gastrodia elata should be cultivated from late October to April of the following year. Winter planting is divided into winter planting and spring planting. Winter planting is sown from late October to early December before the soil is frozen. Spring planting is after soil thawing from March to April, and sowing in high altitude mountain areas can be extended to May.

2. The site selection of planting time for the key points of Gastrodia elata planting techniques:

The cultivation site can choose wilderness sloping land, orchard woodland and other land plots, and it is best to choose sandy loam with strong air permeability and water permeability, and the soil pH value is 5-6.

3. Temperature requirements of key points of Gastrodia elata planting techniques:

Temperature control is an important work in the wild cultivation and management of Gastrodia elata. The suitable germination temperature of Gastrodia elata seeds is 22 ℃ ~ 25 ℃. If the initial sowing temperature is low, plastic film or rice straw should be added to increase the ground temperature. The suitable temperature for Gastrodia elata production is 13-25 ℃ (10 cm below the soil surface). The temperature is higher from July to August, so we should pay attention to the prevention of high temperature and drought. We can build a shade shed or sprinkle water around to cool down. Sprinkling water should be carried out after sunset and soil temperature drop. To prevent freezing in winter, areas below 1000 meters above sea level can be covered with branches and leaves and weeds 10-20 centimeters thick after planting; areas above 1000 meters can thicken the mulch to 30 centimeters.

4. Humidity requirements of planting time for key points of planting techniques of Gastrodia elata:

It is generally required that the average relative humidity be controlled at about 80%. From April to June, the soil moisture was controlled by about 60%. Gastrodia elata enters the peak growing period from June to August, when it is appropriate to keep water and reduce temperature, preserve soil moisture and discharge stains, and carry out comprehensive management. if the humidity is less than 60%, it is not conducive to the growth of Gastrodia elata, and it is easy to cause tuber rot when it is more than 80%, so special attention should be paid to humidity control. At the same time, pay attention to keep the planted sand often wet, sprinkle frequently, sprinkle less, and prefer drought to waterlogging. In September, the nutrition accumulation of Gastrodia elata entered the later stage and reached the physiological mature stage, at this time, the soil moisture of the border bed should be controlled below 40%, the soil temperature had dropped to 10 ℃ in late October, and Gastrodia elata entered the dormant period.

5. Pest control on the key points of Gastrodia elata planting:

The main pests affecting the growth of Gastrodia elata are mole clams, grubs, termites and so on. When you can cultivate Gastrodia elata, spread 5% chlordane powder and "termites kill king" around the border bed, or use traps to trap and kill termites.

At present, the main cultivated varieties of Gastrodia elata include Gastrodia elata, Gastrodia elata (form) and Gastrodia elata (form). Only by adapting measures to local conditions, planting scientifically, grasping the key points of planting techniques and strengthening management, can we achieve high yield and high quality Gastrodia elata.

Recommended reading:

There are four steps in planting Gastrodia elata to achieve high yield.

On the efficacy and function of Gastrodia elata in ancient and modern times