The beginning of May is an important stage in the management of spring peanut seedlings. The following three points should be made in production.
Windproof solid film. At the turn of spring and summer, the weather changes erraticly, and there are often strong winds and sharp cooling weather. For some newly grown mulch peanuts, it will cause great damage, such as the film being blown open and torn. Therefore, for the peanut field where the mulch film has been destroyed, the new film is covered in time, and for the field where the mulch film is not firmly fixed, the film is pressed to ensure the heat preservation and preservation effect of the mulch film.
Check the seedlings to fill the gap. Affected by wind, early sowing, low ground temperature, low seed quality or poor soil moisture, the film spring peanuts often have the phenomenon of lack of seedlings and ridges. Once the peanuts have emerged, they should go to the field to see the emergence of peanuts. Happening. Where there is a shortage of seedlings, it is necessary to plant the seedlings in time, and after replanting, pour the water on the raft.
Open the hole and put the seedlings. When the two true leaves of the peanuts are fully unfolded, the seedlings can be opened. It is best to put the seedlings in the morning when the temperature is low and the light is insufficient. You can use the diapering tools such as bamboo sticks or iron wire to make the seedlings follow the opening, and the soil will be pressed with the soil around the membrane hole. In fact, one touch gently, which not only has the effect of warming and protecting the pores of the sealing film, but also plays the role of avoiding the light to release the seedlings, releasing the first pair of side branches, and naturally clearing the trees. When placing the seedlings in the opening, pay special attention to protect the mulch film to prevent the foot from smashing or tearing the mulch film.
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Chinese herbal medicine chemistry refers to the science of using modern chemical theories and methods to study the chemical composition of Chinese herbal medicine. The object of Chinese herbal medicine chemistry research is the chemical composition of Chinese herbal medicine. The chemical composition of Chinese herbal medicine is very complex, usually sugar, Amino Acid, protein, oil, wax , enzymes, pigments, vitamins, organic acids, tannins, inorganic salts, volatile oils, alkaloids, glycosides, etc. Every Chinese herbal medicine may contain multiple ingredients. Among these ingredients, some of them have obvious biological activity and play a medical role, and are often called active ingredients, such as alkaloids, glycosides, volatile oils, amino acids, etc. The reason why Chinese herbal medicine has medical effects is mainly due to the active ingredients it contains. In addition to many active ingredients of Chinese herbal medicines that have been studied in the past and have been widely used, such as berberine (berberine), which is Antibacterial and anti-inflammatory in Coptis chinensis, ephedrine, which is antiasthmatic in Ephedra, and reserpentine, an antihypertensive ingredient in Rauwolfia, In recent years, more active ingredients of Chinese herbal medicines have been discovered one after another at home and abroad, especially in terms of biological active ingredients for anti-tumor, treatment of cardiovascular diseases and chronic bronchitis. Other ingredients are commonly found in Chinese herbal medicine, but usually have no biological activity and no medical effect, and are called "ineffective ingredients", such as sugars, proteins, pigments, resins, inorganic salts, etc.
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