Pear, plum, plum, apricot and other stone fruit trees and fruit trees of age-old fruit trees are most prone to gummy disease. The outflow of glue is first light yellow transparent body, gradually turns to reddish-brown after coagulation, the diseased part is slightly swollen, cortex and The xylem becomes brown and rotten, and other saprophytes become saprophytic. The tree vigor declines day by day. The leaves are small and yellow, and the branches die when they are severe. In the dormant period of fruit trees, the gum scraping method can be used to prevent fluidic diseases. In winter rain and snow weather, the hard flow of glue will be soft in the event of rain and snow, at which point the fruit trees will not be damaged. After the squeegee, apply 100 times of the 402 times bactericidal liquid, 40% of the 50% bismuth arsenic 50 to 100 times liquid and 5 Baume degrees lime sulfur agent to treat the branches of the lesions, clean the scraped gel and concentrate them. Or burned.
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