Answer: Buried soil method. For underground soil burying method, gently overwhelm the tree and lay it flat on the ground, tying a bundle with straw rope, and directly covering the soil with a thickness of 40 cm; for underground soil burying method, dig trenches between rows with the size of The overwhelming tree body is a degree. The main and lateral branches are tied to the central trunk and placed in the trench to cover the soil. The soil thickness is preferably 20 cm above the ground. The burial method is only suitable for young trees that are 1-2 years old. The trunk is painted white. Use 30 parts of water, 9 parts of quicklime, 1.5 parts of lime-sulfur mixture stock solution, 1.5 parts of salt, 0.5 parts of animal and vegetable oil, and 1 part of tree protector to make a whitening agent and brush the trunk. In addition, before the soil freezes, about mid-to-late November, irrigate the frozen water once, which can increase the cold resistance of the tree and reduce the occurrence of stripping and freezing damage. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone API Powder (Active Pharmaceutical Ingredient) Active Pharmaceutical Ingredients refer to the raw materials used in the production of various preparations. They are the effective ingredients in the preparations. They are various powders, crystals, extracts, etc., prepared by chemical synthesis, plant extraction or biotechnology, but Substances that the patient cannot take directly.
According to its source,Active Pharmaceutical Ingredients are divided into two categories: synthetic chemical drugs and natural chemical drugs.Chemical synthetic drugs can be divided into inorganic synthetic drugs and organic synthetic drugs. Inorganic synthetic drugs are inorganic compounds (extremely elements), such as aluminum hydroxide and magnesium trisilicate used to treat gastric and duodenal ulcers; organic synthetic drugs are mainly composed of basic organic chemical raw materials, through a series of organic Drugs made by chemical reactions (such as aspirin, chloramphenicol, caffeine, etc.).
Natural chemical drugs can also be divided into biochemical drugs and phytochemical drugs according to their sources.Antibiotics are generally made by microbial fermentation, which belongs to the category of biochemistry.In recent years, many semisynthetic antibiotics are the combination of biosynthesis and chemosynthesis.Among APIs, organic synthetic drugs account for the largest proportion in variety, yield and output value, which is the main pillar of chemical pharmaceutical industry.The quality of API determines the quality of preparation, so its quality standards are very strict. All countries in the world have formulated strict national pharmacopoeia standards and quality control methods for its widely used API
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