Summer thunderstorms have a great impact on vegetable production. First, the precipitation intensity assembly causes soil compaction, causing hypoxia in the roots of vegetables, and harmful gases cannot be volatilized. Second, raindrops can easily cause disease. Finally, the thunderstorm time is short, and the weather quickly turns fine after the weather. The temperature rises and the transpiration increases sharply. The normal physiological functions of the plant are destroyed, the plants are prone to wilting, and diseases are prone to occur.
Therefore, vegetables should pay special attention to thunderstorms:
First, it is necessary to drain and water the well water in time after the thunderstorm to reduce the temperature in the field to improve the breathing environment of the plant.
The second is to strengthen the cultivating loose soil. The soil oxygen deficiency caused by thunderstorm can be improved by cultivating loose soil.
Third, the rain can cause soil de-fertilization, and should be topdressed in time, especially for some quick-acting fertilizers.
Fourth, the vegetable fields that have been rejected by the cockroaches should be drained in time, and a leafy vegetable with short growing season, such as Chinese cabbage and fennel, can be planted.
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what is API?
High-purity plant monomer refers to one or more single chemical components with specific biological activity or pharmacological effects extracted from plants, and its purity is usually high, meaning that the content of the component in the extract reaches a certain percentage, and the content of other impurities or irrelevant components is low.
These plant monomers are usually secondary metabolites of plants, such as flavonoids (flavonoids), alkaloids (alkaloids), terpenoids (terpenoids), phenolics (phenolics), etc., which play a variety of physiological functions in plants such as defense, signal transduction, and antioxidant. Due to their pharmacological activity, high-purity plant monomers are often used in pharmaceuticals, health products, cosmetics and other biotechnology products.
For example, Naringenin is a high-purity plant monomer extracted from citrus plants with antioxidant and anti-inflammatory activities; Corosolic acid is a high-purity active monomer extracted from loquat leaves, which is considered to be effective in treating type 2 diabetes and obesity.
Extraction and preparation of high-purity plant monomers usually require a complex separation and purification process, including extraction, column chromatography, crystallization, recrystallization and other steps to ensure the purity and activity of the final product. These processes may be required by specialized biotechnology companies.
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