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为寻求贮藏期化学防治红薯黑斑病的有效方法,我县从1974年开始进行了多菌灵处理薯种的试验。经多年试验、示范结果用50%多菌灵500倍液浸蘸、泼洒薯种,一般病块率可控制在2%以下,防病效果98%左右。据1981年全县十二个公社的调查,处理区红薯黑斑病贮藏期病块率由25.6肠下降到1一2肠,不仅在贮藏期有效地控制黑斑病的危害,而月能大大压低苗床和田间的病株率。经过多菌灵防病处理的薯种,比
In order to find an effective method of chemical control of sweet potato black spot during storage, my county started from 1974 to test the carbendazim processing potato species. After years of testing, the results of the demonstration were dipped in 500 times of carbendazim 500 times and sprinkled with potato seeds. The rate of common disease can be controlled below 2% and the preventive effect is about 98%. According to a survey conducted by twelve communes in 1981 in the county, the disease rate of sweet potato black spot disease in the treatment area decreased from 25.6 to 1 to 2, which not only effectively controlled the occurrence of black spot during storage, Decrease seedbed and field strain rate. After carbendazim treatment potato disease, than