Plowing in the woodland: The young orchard is usually overturned by 15 cm, and the result has been deep-leafed and enlarged, and raw soil or humus has been added to improve the growth environment of the root system. The adult tree orchard should be deep-turned and the depth of the ground is 30 to 35 cm. Be careful not to scratch the root of the tree. At the same time as the soil is turned over, it is necessary to carry out comprehensive sorting, and water and soil conservation facilities should be well-prepared to prevent the loss of soil and water in the rainy season, and the surface pests can be turned to the depths and suffocated. Fertilization: Chestnut fertilization, generally based on organic fertilizer, with a small amount of chemical fertilizer. Open a circular fertilization ditch along each tree canopy. The ditch is 30-45 cm wide and deep. Each tree is full of fruit and the yield is 15-25 kg. 100-150 kg of base fertilizer, 2000 g of superphosphate, and 1000 U of urea should be applied. Grams, 1000 grams of compound fertilizer, Shi Hou Pei earthworms, absorbed by the root system, rapid restoration of tree vigor. Smearing and whitening: When the age is more than 10 years, it can be done by scraping the skin. The scraping time should be the best after fruit picking. For cold regions, it is usually appropriate to scrape the skin in the early spring. The trunks of the fruit trees and the rough branches on the main branches are the wintering sites for pests. When scraping the skin, the underside of the trunk should be covered with plastic, and the rough skin, old skin, and cracked skin should be scraped off with a knife, and brought to the park and burned. After the skin is shaved, the trunk and large branches are painted with whitening agent in time to prevent pests or pathogens from infecting the trunk. Pruning: For 5-6-year-old chestnuts after pruning and shaping, only cut off the base of the chaotic branches and branches. Generally, it does not need to be short-cut. The dry and dead branches, dead branches and diseased shoots should be completely removed. When there are crowded overlapping branches and dense branches in adult trees and aged trees, the overlapped branches and dense branches in the inner and middle branches should be properly removed. The crown is well ventilated and light, with three-dimensional results. For aging chestnut trees, old branches should be sawn off, and main branches should be re-cultivated. However, they can also use longer branches to replace the main branches to form a new canopy and restore its tree vigor to form a strong result tree. Antifreeze: Most chestnut trees fall into the winter as soon as they reach winter, especially in cold regions. Chestnut trees are prone to freezing damage, which is very unfavorable for the wintering of trees. Before defoliating or defrosting chestnut trees, trees should be planted in loose soil, combined with base fertilizer, and soil at the base. When the soil is dry, water should be poured in places where conditions are required to improve the cold resistance of the tree and make it safe for winter.
operation in China.
Intranasal spray administration, no injection and no pain
Produced with SPF embryonated eggs
pollution is excluded.
Influenza Vaccine,Influenza Vaccine Development,Influenza Vaccine Strains,Flu Vaccine Changchun BCHT Biotechnology Co. , https://www.ccbcht.net
Influenza Vaccine, Live, Nasal, Freeze-dried Exclusively authorized by the WHO in China WHO
Influenza Vaccine, Live, Nasal, Freeze-dried is a cooperative project with the WHO, which has been included in Global Action Plan for Influenza Vaccines (GAP)[1]. Hundreds of millions of doses have been used in the world, and Changchun BCHT Biotechnology Co. has the exclusive right of production and
The vaccine is inoculated by nasal spray, equipped with nasal spray device, and only needs to spray once a year in two nostrils to prevent influenza.
Mucosal immunity + Cellular immunity + Humoral immunity
After influenza virus attacks human body, it widely exists in nasal cavity, respiratory tract and other mucosal parts, as well as in body fluids and cells.
Vaccination of Influenza Vaccine, Live, Nasal, Freeze-dried can quickly stimulate the triple immune response of human body, and carry out defense
against viruses in different parts:
·Intranasal administration can produce mucosal immunity (IgA antibody), which forms the first immune defense line in the nasal cavity.
·Produce humoral immunity (IgG antibody) to remove influenza virus from body fluids.
·Produce cellular immunity (T cells) to remove influenza virus from cells
3+N More extensive protection
The production strains are recommended and supplied by the WHO every year.
The vaccine can not only effectively resist the vaccine strain, but also produce cross immunity to other subtypes of influenza virus.
The chick embryos for vaccine production comes from SPF (specific pathogen free) chicken flocks, so the risk of exogenous pathogenic microorganism
Free of inactivator, split agent and preservative
High protection and fast antibody production
This is the first influenza vaccine in China that has been evaluated by the protection effect of etiology in clinical stage. The protective effect of phase III
clinical trial is consistent with the literature[2]
.
First, the immune barrier was formed in the nasal mucosa after LAIV vaccination. It has been reported that the antibody of nasal mucosa can be
produced in 3 days[3], which greatly shortens the time for vaccine to produce
protective effect.