Wang Dianshan, a farmer in Lidian Town, asked: “The phenomenon of “hats†in cotton seedlings is often unearthed. How many of these cotton seedlings are thin and rotten, why not?
A: This is mainly due to the fact that after the sowing of cotton seeds, the soil is too thin, watering on the seedbed is insufficient or the water is not uniform, so that some cotton seeds do not absorb enough water and the swelling pressure of the endosperm is insufficient, causing the cotton shell to come out of the soil, resulting in seedlings The potential is weak and the leaves are rot. The solution is to put the cotton seeds on the seedbed first after pouring soaked enough water, followed by the thickness of the cover soil must be about 1.5 cm, heat preservation and promotion of Qi Miao, seedlings are not out of Qi Do not easily remove the film.
Plant extracts are based on plants as raw materials. According to the needs of the use of the final product extracted, through a physical and chemical extraction and separation process, one or more effective ingredients in the plant are obtained and concentrated, without changing the effective ingredients. The product formed by the structure.
1. According to the content of active ingredients, it can be divided into three types: effective monomer extract, standard extract and ratio extract;
2. Divided into glycosides, acids, polyphenols, polysaccharides, terpenes, flavonoids, alkaloids, etc. according to ingredients;
3. According to the product form, it can be divided into vegetable oil, extract, powder, lens, etc.
4. According to the purpose, plant extracts can be divided into natural pigment products, traditional Chinese medicine extract products, extract products and concentrated products.
There are several classifications of some of the best-selling plant extracts in the world. For example, Rhodiola, Ginkgo biloba, Ginseng extracts are used in the field of brain strengthening, nourishment, and prevention and treatment of Alzheimer's; polypeptide extracts of green tea, Citrus aurantium, apple, and bitter gourd Used in weight loss, lowering blood sugar and preventing diabetes; Paclitaxel, tea polyphenols, theanine, bioflavonoids, such as lycopene, anthocyanins, etc. are used in natural anti-cancer fields; licorice, garlic, astragalus, soybean extract Used in the field of human immune system.
Plant extract,milk thistle extract,Quercetin,mushroom extract,rutin
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