Control methods of grape diseases in rainy season

1. From time to time, it is found that the disease is overcast and rainy, hot and humid, and is most susceptible to the disease. You have to go to the vineyard for a comprehensive observation every day. Timely detection of disease symptomatic spray. 2. Do a good job of prevention and relief of diseases mainly with Bordeaux solution, and apply other drugs to spray one time before flowering, one time after blooming, one time, one time, one If the occurrence of white rot, anthrax, then symptomatic spray. Most of these drugs are acidic and the interval time should be strictly controlled with Bordeaux liquid, which is very effective in disease prevention. 3. Timely fertilizing and strengthening the rainy season will lead to the loss of fertility. According to the loss of land fertility and grape growth, timely fertilizer should be applied less and diligently. Can also be extra-root topdressing, combined with spraying, if necessary, spray separately. 4. After ploughing and loosening the soil and increasing the permeability of heavy rain and rainstorm, the surface of the vineyard will be hardened, resulting in lack of oxygen in grape roots, reduced resistance and susceptibility to disease. Ploughing in the deeper ground before the rainy season. In the rainy season, we should pay close attention to the interval between rainy days and plough the vineyard to increase soil permeability. 5. To clean up the secondary shoot and change the rainy season, the grape is the most likely to grow, and the incidence of secondary shoot is very high. It is necessary to pick the heart in time and erase the deputy tip. For plants with too many new shoots, some of them should be removed to facilitate ventilation and light transmission and improve stress resistance. 6. Clear the garden at the right time to contain the source of the disease. if a disease occurs in the vineyard, the disease is most likely to spread because of high temperature and humidity. The garden should be cleared at any time. Remove the diseased leaves, branches and fruits from the garden, bury them or burn them. Remove weeds in the garden in time, often wash scissors and disinfect them when cutting off diseased branches and fruits to prevent cross-infection.