Planting conditions of Gastrodia elata

Gastrodia elata is a perennial herb belonging to orchids. It is mainly used as tuber for medicine. It is a precious traditional Chinese medicine listed in Chinese Pharmacopoeia and occupies an extremely important position in the long-term best-selling varieties of traditional Chinese medicine market in China. Tianma suitable for planting in moist breathable and good permeability, loose, humus-rich loam or sandy loam, let's take a look at Tianma planting conditions which bar!

temperature conditions

Temperature is the primary factor affecting the growth of Gastrodia elata. Gastrodia elata likes to grow in cool summer and not very cold winter environment, and is sensitive to temperature. The high or low temperature will directly affect the growth, yield and quality of Gastrodia elata. The temperature requirement of Gastrodia elata growth and development is adapted to the seasonal variation of natural temperature in producing areas. When the ground temperature was above 10℃~12℃, the dormant Gastrodia elata began to sprout and grow. When the ground temperature was above 15℃, the growth of Gastrodia elata was vigorous, and the meristem cells of seed hemp divided, elongated and enlarged rapidly, forming new tubers of different sizes. Generally, from late May to early September, when the ground temperature is between 20℃ and 25℃, it is the vigorous period of Gastrodia elata growth. However, when the ground temperature in summer continued to exceed 30℃, the growth of Armillaria mellea and Gastrodia elata was inhibited, and "bird-head-shaped" arrowhead was produced. Therefore, high temperature season, should be heatstroke prevention and cooling. When the temperature was lower than 15℃ in late autumn and early winter, the growth speed of new seed tuber slowed down and gradually stagnated into overwintering dormancy.

humidity conditions

Gastrodia elata is suitable for growing in rainy and humid climatic conditions. Especially in June to August, gastrodia elata growth season, need more water, and late September, rain, low temperature gastrodia elata will be harmed by Armillaria mellea. The soil moisture content in Gastrodia elata production area varies greatly according to different soil types and textures. Humus-rich soil, water content is often maintained at more than 50%. Higher soil moisture is beneficial to the growth of Gastrodia elata and Cyclospora, but too high soil moisture is easy to cause Gastrodia elata decay.

lighting conditions

Gastrodia elata from planting to harvest, the entire process of asexual reproduction are underground. Sunlight does not have much effect on it. Because of its special characteristics, it can be cultivated outdoors, indoors, in bomb shelters and tunnels with or without light. But sexual reproduction requires a certain amount of scattered light. After the arrow hemp is unearthed, the strong direct light will harm the stem of Gastrodia elata, cause sunburn, and lead to plant death. Therefore, the breeding nursery should be built with shade. In addition, in the low mountain area introduction, strong direct light will increase the ground temperature, in the hot summer, should also build a shed shade, reduce the temperature, so that Gastrodia elata spend the summer.

topographical condition

If the high temperature in summer and low temperature in winter can be controlled according to the conditions needed for the growth of Gastrodia elata and Armillaria mellea, and the suitable planting period can be arranged, it can be introduced and cultivated in plain, high mountain, hot southern area or low temperature northeast area without being restricted by altitude. Strong wind will blow flower sprouts and affect seed harvest. Therefore, the flower sprouts of sexual reproduction cultivated arrow hemp must be inserted into bamboo poles to prevent lodging.

soil conditions

There is a nectar cut relationship between soil texture and growth of Gastrodia elata. Gastrodia elata is suitable for growing in sandy soil rich in humus and moist. This soil is loose, water-holding and breathable. The soil pH should be between 5.8 and 6.7. General clay soil water permeability, poor air permeability, gastrodia elata and armillaria mellea poor growth. Indoor, tunnel, air-raid shelter and other places to cultivate gastrodia elata, do not use natural soil, but with yellow sand and rice husk mixed instead of soil as filler, the effect is better. The soil or filler planted with Gastrodia elata is not suitable for repeated use, because the metabolites of Gastrodia elata and Armillaria mellea inhibit the growth of Gastrodia elata and Armillaria mellea, and even cause Gastrodia elata to rot, affecting yield and quality.