Traditional medicine believes that Rehmannia glutinosa has the effects of nourishing yin and enriching blood, promoting fluid production and quenching thirst. Modern pharmacological experiments have found that glycosides, phenols and sugars in Rehmannia glutinosa extract have effects on almost every system of human body.
The main active ingredients are iridoid glycosides which can improve cardiovascular system function, and rehmannia glutinosa polysaccharides and rehmannia glutinosa oligosaccharides which can regulate endocrine, improve immune function and lower blood sugar. At the same time, phenylethanoid glycoside can promote the proliferation and differentiation of bone cells, and has broad development and application value in health food and medical research.
Extended data
When planting Rehmannia glutinosa, it is necessary to choose a plot with loose soil and deep soil layer suitable for the growth and development of Rehmannia glutinosa. Avoid continuous cropping, the rotation cycle is 3-4 years, and avoid continuous cropping with Gua Tian and sorghum. It is best to plant vegetables, cotton, millet and sweet potatoes in the previous crop.
After harvesting the previous crop, plough it with a big machine to a depth of 30 cm, carefully prepare the soil, and sow it above the ground to achieve "early, deep, clean, fine, solid and flat". 5000 kg of organic fertilizer, 20 kg of urea, 50 kg of calcium magnesium phosphate fertilizer and potassium sulfate 10 kg as base fertilizer were applied every 667m2. Ridge cultivation should be carried out in low-lying areas to facilitate drainage in rainy season and avoid root rot caused by accumulated water. At the same time, the temperature difference increases in the late growth stage of raw land, which is beneficial to nutrient accumulation.
Baidu Encyclopedia-Sheng Di