Fertilizing flowers is one of the important measures to raise flowers. The key to doing a good job in fertilization is to achieve timely and appropriate amount. In time, it is necessary to fertilize when the flowers need fertilizer. For example, it was found that the color of the leaves of the flowers became lighter and the plants grew thin and slow. At this time, fertilization was like the charcoal in the snow, which was the most timely. This can be used as a metaphor for people to eat. When you get food in your stomach, you will eat very fragrant and be good for your health. On the contrary, if you eat a lot of food when you are full of stomach or when you are about to sleep, it will not only be harmful to your health, but will be harmful to your health. The right amount is that the amount of fertilizer applied should be mastered. If it is applied too little, it will not work. If it is applied excessively, it will not achieve the purpose, but will burn the flower branches. It should also be noted that the flower should be applied with nitrogen fertilizer at the seedling stage, which can promote the growth of the seedlings quickly and robustly, and the phosphate fertilizer should be applied during the flowering period to facilitate the flowering.
Fertilization must also pay attention to the relationship between the seasons. In spring and summer, the flowers grow fast and vigorous, and can be fertilized more. After autumn, the flowers grow slowly and should be less fertilized; in winter, there is no need to apply fertilizer. It is also important to master the number of fertilizations. The number of fertilizations of potted flowers may be more, but the amount of application should be less, and should not be applied too much or too thick. From the beginning of the spring to the beginning of the autumn, it is generally possible to apply 1 time of thin fertilizer water every 1-2 weeks; after the autumn, apply 1 time to release the thin fertilizer water every 2-3 weeks;
The time of fertilization can be carried out in the evening. It is important to note that the hot season cannot be fertilized around noon, because the soil temperature is high during this time and fertilization is easy to damage. In addition, before fertilizing water, it is best to loosen the potted soil first, which will facilitate the smooth infiltration of the fertilizer and water, and be absorbed by the roots of the plants.
Chemical fertilizers such as ammonium sulfate (nitrogen fertilizer), superphosphate (phosphorus fertilizer), potassium sulfate (potassium fertilizer), etc., are suitable for garden flower application. Potted flowers should not be applied often, otherwise the time will be longer and the pots will become harder and harder until they are knotted.
Fertilization should also be applied according to the variety of flowers. The fertilizer used cannot be the same. Such as sweet-scented osmanthus, camellia, pig manure Avoid human urine; Camellia, azalea, gardenia and other flowers native to the south, avoid alkaline fertilizer; need to trim the flowers every year, should increase the proportion of phosphate fertilizer, potassium fertilizer. Flower-based flowers such as chrysanthemums, dahlias, etc., need to apply a proper amount of nutrient-rich fertilizers during flowering to make flowers more beautiful; flowers that focus on leaves should be more focused on nitrogen fertilizer; The flower should be properly reduced in the flowering period, while in the strong fruit period, the nutrient-rich fertilizer should be applied. The bulb flower should be applied with potassium fertilizer to enrich the bulb; the fragrant flower should be applied with phosphate fertilizer and potassium fertilizer to promote the flower aroma. If organic fertilizer is applied, it is not allowed to use unfermented raw fertilizer. It must be fully decomposed and added with water to make it thin. For chemical fertilizers, the dosage must be strictly controlled. It is better not to have more, but not too thick, otherwise it will easily burn out the roots and cause death.
Some experts who have years of experience in flower cultivation have summed up a practical set of fertilization methods. That is, "four more, four less, four no and three bogey." "Four more" means yellow thin and multiple application, more application before germination, more application in the bud stage, more application after flowering; "four less" is fat and less application, less germination, less flowering, less rainy season; "four no "It’s a long time, no new application. Do not apply in the summer, do not sleep. "Three bogey" is a bogey of heavy fertilizer, two bogey hot fertilizer (referring to avoid fertilization when the soil temperature is high in the summer before noon), three bogey on the fertilizer (referring to avoid planting flowers directly on the base fertilizer of the pelvic floor, Instead, use a layer of soil on the base fertilizer).
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API Powder is fully defined in ICH Q7A as any substance or mixture of substances intended for use in the manufacture of pharmaceutical products and, when used in pharmaceutical products, as an active ingredient of pharmaceutical products. Such substances have pharmacological activities or other direct effects in the diagnosis, treatment, symptom relief, management or prevention of disease, or can affect the function or structure of the body. The active ingredient of a medicine. Only when an API is processed into a pharmaceutical preparation can it become a medicine for clinical application.
According to its source, apis are divided into chemical synthetic 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 (very few are elements), such as aluminum hydroxide and magnesium trisilicate for the treatment of gastric and duodenal ulcer, etc. Organic synthetic drugs are mainly made of basic organic chemical raw materials, through a series of organic chemical reactions and drugs (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 produced by microbial fermentation and belong to the category of biochemistry. In recent years, a variety of semi-synthetic antibiotics are the combination of biosynthesis and chemical synthesis products. Among apis, organic synthetic drugs account for the largest proportion of variety, yield and output value, which is the main pillar of chemical pharmaceutical industry. The quality of the API determines the quality of the preparation, so its quality standards are very strict. All countries in the world have formulated strict national pharmacopoeia standards and quality control methods for the widely used APIS.
Specific API after processing -- pharmaceutical preparations
The term API is used mainly in relation to the finished product. Mainly raw materials obtained by chemical processing means, supply raw materials for the production of finished drugs. For example, cefpirome sulfate for injection is a drug, then cefpirome sulfate is an API
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