Modern pharmacological research shows that Dendrobium has the main medicinal characteristics of clearing stomach heat, promoting fluid production and relieving annoyance, and can nourish yin and promote fluid production, clear fire and reduce fever; Can benefit qi and nourish yin, clear heat and strengthen spleen; Can benefit qi and promote fluid production, relieve sore throat and improve eyesight; It can also nourish yin and tonify kidney, astringe and soothe the nerves, and has certain auxiliary therapeutic effects on diabetes due to yin deficiency, hyperlipidemia, neurasthenia, chronic bronchitis, emphysema, dry mouth and bitter taste, insomnia, dreaminess, dry cough and shortness of breath after radiotherapy and chemotherapy.

In fact, clearing away heat and benefiting yin deficiency is only a simple description of the use of Dendrobium. Experts pointed out that different varieties of Dendrobium have different effects.

For example, wild Dendrobium such as Dendrobium nobile and Dendrobium candidum, which grow on the plateau, are cold and bitter in nature, so their medicinal properties are relatively cold in Dendrobium, suitable for clearing away deficiency and heat, and fresh products have stronger heat-clearing power than dry products.

Another example is that Dendrobium nobile contains more complex alkaloids than other varieties; Dendrobium candidum contains more polysaccharides. These two characteristics may be the pharmacological basis of its anti-aging, anti-tumor and immune enhancement effects.

Other Dendrobium species, such as Guangdong Dendrobium, Dendrobium tenuifolium and Dendrobium nobile, are sweet in taste and flat in nature, so they are good at nourishing lung and stomach yin.

Huang specially reminded that Dendrobium is a product of nourishing yin and clearing heat after all. Therefore, patients with qi deficiency, yang deficiency and blood deficiency are not suitable to take Dendrobium as a tonic.

Who are the above patients? Most of their symptoms are: cold limbs, cold abdomen and warm stomach, long urine, thin stool, pale mouth, thin saliva and abdominal distension.

Experts reminded not to blindly eat Dendrobium through hearsay. "Especially wild Dendrobium, fresh products have stronger heat-clearing power than dry products. Otherwise, it is even more useless to hurt Yuanyang. "

Extended data:

breeding method

Mainly adopts the method of ramet propagation. Dendrobium planting is generally carried out in spring, and it is easy to survive because of the high humidity and increased rainfall in spring. Dendrobium nobile, which is robust and free from diseases and insect pests, is selected, and the old stems that have been cut for more than 3 years are used as medicine, and the new stems that are 2 years old are used for reproduction. When breeding, subtract the old roots, leave 2~3 cm, separate the seeds, each gram contains 2~3 stems, and then plant. You can stick stones and trees.

Stick to stones and plants. On the selected stones, holes are chiseled according to the plant spacing of 30 cm, and a layer of cow dung mixed with mud is thinly coated, so that the man-made stone holes or stone troughs at the planting holes are plugged to make them stable and not fall off, and pebbles can be plugged and fixed.

Stick to trees and plants. On the selected tree, cut a part of bark from the tree according to 30-40cm, coat a thin layer of mixture of cow dung and soil on the seeds, then put them into the broken skin or longitudinal fissure ditch of the tree to stick the bark, then cover them with a layer of straw and bind them with bamboo.

References:

CCTV- Dendrobium is good, but don't eat it indiscriminately, let alone overdo it.

Baidu encyclopedia-Dendrobium