1. The long-term flooding in the shed causes the soluble soil in the deep soil to spread to the surface along with the water, and the use of large amounts of chemical fertilizers further exacerbates the occurrence of salinization, which often results in the planting of young seedlings. Seedlings, this kind of dead seedlings are often not caused directly by the germs, but are mostly dead roots. Suggestion: Small water pouring, less pouring, water flow to the ground is appropriate, if it has become a plant, reduce the use of fertilization, increase the amount of foliar fertilizer, can greatly change the status of crop growth. 2. Although the fight drugs really played very carefully and sprayed very thoroughly, there are some places that have been overlooked. These places are covered by plastic film, namely the shed wall and roof. There are many water droplets in these areas almost all the time. Many spores of pathogens are hidden inside. When water accumulates more, they drop as the waterdrops become part of the secondary infection. Suggestion: Before spraying, use the kind of tool that is used in households with poles and windows to wipe glass, wipe the entire wall of plastic film with rubbing liquid, wipe it twice, leave no dead corner, and then spray, which can basically guarantee this The crops are no longer affected by the same disease, provided that they do not get new spores or the like from the outside. 3. In the spring and autumn, the transmission of virus disease is serious in greenhouses, fly plover and thrips, and there is no resistance problem in virus disease. The number of insecticide nets of the growers is relatively low, except that they can prevent pests like suckers, moths, and butterfly pests from being larger, and they will not be able to prevent pests from sucking and sucking mouthparts. Suggestion: Do a good job of pest control work, pull pest control nets, because the spread of virus disease pests are very small, the body width does not exceed 0.5 mm, and the number of heads is between 300 mesh and 400 mesh, so the following 400 mesh Insect nets to prevent these pests, basically do not achieve any effect, but also how to prevent virus disease is also unable to prevent the reasons. Strengthening the immune system refers to enhancing the immune system of the human body. Immunity is the body's own defense mechanism, which is the body's recognition and exclusion of virus and bacterial invasion, the aging, damage, death, and degeneration of its own cells, as well as the identification of its own cells and the treatment of mutant cells and virus-infected cells in the body. Our company is able to produce pharmaceutical raw materials for strengthening immunity, mainly including:Levofloxacin Hydrochloride,Minoxidil,Meloxicam,Clindamycin hydrochloride,Nebivolol,Amikacin,paracetamol,Gabapentin,Norfloxacin hydrochloride,Neomycin sulfate,streptomycin sulfate,Erythromycin,Baclofen,Dexamethasone,Duloxetine hcl,Ibuprofen,Bupropion HCl, baclofen,Rivaroxaban. Immunity enhancement , Raw Nebivolol Powder,Erythromycin Liquid Form Xi'an Henrikang Biotech Co.,Ltd , https://www.xianhenrikangbio.com