Answer: To prevent and treat this type of disease, the park should be selected from plots with high soil organic matter content, looseness, good ventilation, and low groundwater level. The plot should be planted with non-pathogen-free plots of gramineous plants for many years, and plots with a pH greater than 8 should be selected. Kiwifruit should not be grown. When the garden is built, all the plant residues in the garden must be removed and adequately cooked manure and cake fat should be applied. When irrigating, avoid flooding or irrigating the trees. If there are conditions, sprinkler irrigation or drip irrigation may be used. Reasonable load, for susceptible orchards, can be used to exterminate or orally immunize the roots, once every 15 days, even irrigation 2 to 3 times.
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