The use of semi-subterranean greenhouses for the cultivation of shiitake mushrooms can be practiced by placing herringbone mushrooms in the underground pits, with a 45-degree angle from the ground. When discharging, put a layer of four mushrooms on a layer with a spacing of 10 cm. Place 1 mushroom in the upper part of the 4 roots of the mushroom as wood, and put 4 more mushrooms on it. Emissions. In order to facilitate the management of the mushrooming period, the trees should be discharged according to tree species and coarse breakdown levels. After raising the bacteria or the mushrooms that have been mushroomed for the last time, put them in the underground pits, and then make water replenishment. Spray water 3 times a day for 1 hour each time and continue to spray for 2-3 days until the mushrooms ooze water. . The moisture-absorbing mushroom wood is covered with a film, but ventilation is required for 1-2 hours every day, and the film on the upper part of the greenhouse is opened at night to increase the temperature difference between day and night, to stimulate mushrooming. If conditions permit, mushroom wood absorbs enough water and then sprays 4010-6 citric acid, which can accelerate the flower buds. The young mushroom that has just grown has a brownish color if it is not white, indicating excessive moisture. If the young mushroom dries and shrinks, it means the dry cold is slightly stronger. It is better to remove the film and spray water in the pit to increase the air humidity. In short, after the mushroom buds are grown in large quantities, when the young mushroom diameter is 1.5-2.5 cm long, if there is no pattern on the old mushroom cap or its pattern is not obvious, and the groove stripe is light and not white, it can not be covered every few days. Membrane, and appropriate to reduce the cover, to promote the formation of mushroom and then shade, cover film, so that the mushroom grows. However, it should be noted that in the rainy days, it must be covered with plastic film to prevent the mushroom body from being affected by the rain and reduce the quality and even reduce the production. Silymarin is a flavonoid complex extracted from the seeds of the Compositae plant Silybum marianum by condensation of dihydroflavonols and phenylpropanone derivatives. The appearance is yellow powder or crystalline powder with bitter taste. Easily soluble in acetone, ethyl acetate, methanol and ethanol, slightly soluble in chloroform, almost insoluble in water, has a strong hepatoprotective effect, can protect liver cells from damage by free radicals, and is far more effective than vitamin E and promote protein The synthesis speeds up the production of new liver cells, allowing the damaged liver cells to repair themselves, so it is called "natural hepatoprotective medicine". It mainly contains four flavonoid isomers of silybin, isosilybin, silymarin and silybinin. Among them, silybin is the main biologically active component of silymarin and has the highest content. It has the functions of anti-oxygen free radicals, anti-lipid peroxidation, and protection of liver cell membranes. Due to the shortcomings of silymarin insoluble in water, poor oral absorption, and low bioavailability, the solid dispersion technology of lecithin can be used to increase the fat solubility of silybin and increase the bioavailability (about 3 times), thereby enhancing its resistance. Lipid peroxidation, stabilize and repair damaged liver cell membrane, promote the recovery of liver cell function and so on. Clinically, it has achieved good results in the treatment of acute and chronic hepatitis, hepatitis B, cirrhosis and various toxic liver injuries. Milk thistle seed extract,Milk thistle extract,Silymarin,Silybin,Silybine PYSON Co. ,Ltd. , https://www.pysonbio.com