After snowing, the management of winter-warming vegetable greenhouses requires extra care to ensure the temperature and light conditions required for crop growth. Rationally increase organic fertilizers. The increase of organic fertilizer in the soil can increase the heat capacity of the soil, protect the root system of plants, and reduce the loss of heat during rain and snow. On cloudy days, she insisted on rolling up the winter vegetable greenhouse straw. In the case of continuous rain, snow and cloudy conditions, many vegetable farmers do not think it necessary to draft the curtains. Actually, it is not necessary to fully obtain light, to compensate for the growing needs of vegetables, and to carry out photosynthesis. The roll screen time can be appropriately delayed, but drafts must be drafted at noon to increase scattered light. Greenhouse manufacturers warn you that when the snow weather ends, sudden drafting of the curtain may cause a sudden increase in temperature in the winter-warm vegetable greenhouses. The transpiration of crops will increase and seedlings will appear. The grass curtains can be put down at appropriate intervals to prevent seedlings from occurring. . Chitosan is a product of n-deacetylated chitosan. Chitin, chitosan and cellulose have similar chemical structure. Cellulose is hydroxyl group at C2 position, chitin and chitosan are replaced by an acetyl group and an amino group respectively at C2 position. Chitin and chitosan have many unique properties such as biodegradability, cell affinity and biological effect, especially chitosan containing free amino group, which is the only basic polysaccharide in natural polysaccharides. Chitin,Chitosan,Chitosan Oligosaccharide,Carboxymethyl chitosan Allied Extracts Solutions , https://www.alliedbiosolutions.com
The amino groups in the chitosan molecular structure are more reactive than the acetylamino groups in the chitin molecule, which makes the polysaccharide have excellent biological functions and can carry out chemical modification reaction. Therefore, chitosan is considered as a functional biomaterial with greater application potential than cellulose.
Chitosan is the product of natural polysaccharide chitin removing part of the acetyl group, with biodegradability, biocompatibility, non-toxicity, antibacterial, anti-cancer, lipid-lowering, immune enhancement and other physiological functions. Widely used in food additives, textile, agriculture, environmental protection, beauty care, cosmetics, antibacterial agent, medical fiber, medical dressings, artificial tissue materials, drug slow release materials, gene transduction carrier, biomedical fields, medical absorbable materials, tissue engineering carrier materials, medical and drug development, and many other fields and other daily-use chemical industry.