The virus is composed of a nucleic acid molecule (DNA or RNA) with a protein consisting of non-cell morphology of the campal life of the living body. The general symptoms of viral infection are fever, headache, cough and other symptoms of systemic poisoning and viral host and invasion of tissues and organs leading to inflammatory symptoms caused by local symptoms (diarrhea, rash, liver function damage, etc.). Different symptoms of the different virus, some viruses can also damage the myocardium, causing viral myocarditis. There are two types of viral infections, mostly recessive infections (subclinical infections), and a few are dominant infections. Dominant infection can be divided into acute infection and persistent infection. There are many ways of antiviral infection, such as direct inhibition or killing of viruses, interference with virus adsorption, prevent viruses from penetrating cells, inhibit viral biosynthesis, inhibit viral release or enhance host antivirus capabilities. At present, there are several major types of antiviral drugs: Anti-Respiratory virus infection drugs, anti-immune virus drugs, anti-hepatitis virus drugs, anti-herpes virus drugs.
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First, a reasonable park: the cultivation area must be free from pollution such as the atmosphere and water, and have a good water and gas environment. The terrain is relatively high, and it is best to be sunny and ventilated. There are no large buildings around, and the soil is arid and has good conditions for watering. The heads were selected for evacuated varieties, and the disease-free strong seedlings were planted at a spacing of 1.5 meters and 6 meters. Second, fertilizer and water management: To adhere to large fertilizer suitable water, reasonable nitrogen, increase the ratio of phosphorus and potassium. During the site preparation, 5,000 kg of farmyard manure per acre was applied, and nitrogen fertilizer was applied during the growing season; foliar fertilizer was sprayed; 3% of zinc sulfate was sprayed before germination; 0.3-0.5% of urea and 0.2-0.3% of dihydrogen phosphate were sprayed during the growing season. Potassium. Pour 1 water after each fertilization, but not too much, so as to avoid high humidity, increase the incidence. Third, plastic pruning 1, plastic and frame type: Dulong dry plastic, a main vine 1.5 meters long, the front of both sides of the uniform distribution of the results of 10-12 mother branches, each branch left 20 centimeters left a result of the branch, arranged 1 A vegetative branch, the results of branches and vegetative branches each year conversion, shelf type with a small shed, greenhouse height of 1.5 meters, growth under the ear canopy can reduce the incidence of sunburn. 2. Pruning (1) Winter Shear: The first year of heavy shearing, leaving 1 mother branch with a length of 20 cm, and the main vine with a length of 1 meter in the 2nd year, leaving 3-5 result branches above, leaving 1 result for each result branch. Ears. In the third year, there was a full shed, when the main vine was 1.5-2 meters in length, leaving 10-12 result branches, half of which resulted in 2-3 buds per result branch, cutting vegetative branches and preparation Branches, leaving 1-2 buds cut off. (2) Summer Scissors: 1 Tied vines: The new shoots are fixed on a scaffold, distributed evenly, and reasonably occupy space. 2 Topping: For the characteristics of small red leaves, leave 7-8 leaves topping, can control long growth, and increase photosynthetic efficiency. (3) Inflorescence whole-splitter: According to the principle of vegetative shoots and fruiting branches of 2:1, the inflorescences on the vegetative shoots should be removed, and the spike tips should be removed so that the ear shape is inverted trapezoid and when the ear is more crowded, some of the fruit particles are removed. 4 bagging: can reduce the pests and diseases, reduce sunburn. Pick the bag before the first half of the month to facilitate coloring. Fourth, pest control: As far as possible the use of biological and mineral sources of pesticides. 1. Diseases: (1) White rot of grapes: Strengthen cultivation and management, increase disease resistance, cut off diseased parts at any time, eliminate pathogens, spray medicines at the early stage of disease, and spray them 3-5 times every 15 days. The agent can be used 70% thiophanate-methyl 800 times, 50% carbendazim WP 800 times. (2) scab disease: to prevent the main, before the germination spray shovel remover, 0.5% pentanol sodium mixed 3 Baume degree of lime sulfur. In the growing season, after the leaves are colored, they are sprayed once every 10-15 days. The agent can be used with 1:0.5:200 Bordeaux mixture and 50% withdrawn 800 times. (3) Anthrax: When the grape berry began to colorize, it was sprayed for the first time, and 50 times of the bacteriostatic WP was used for 800 times. The drug was stopped one month before picking. (4) Downy mildew: diseased leaves were collected in late autumn. Spraying at the early stage of the disease, 1:0.5:200 Bordeaux fluid can be used, and 65% of the same zinc can be used for 500 times. 2. Insect pests: Grape-winged moth: Combine winter cuts, cut off damaged vines to eliminate overwintering larvae, and spray urine on the 3rd 1500-fold solution of the young urine during the insect period. Before spraying the grapes, 3 Baume degrees lime sulfur is sprayed, and the growth season spray 0.2 - 0.3 Baume degree lime sulfur agent.