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山东省文登县农业局,对农民防治甘薯黑斑病的经验作了一些调查和试验。证明育苗时采用浅盖沙的办法,能够大大减轻黑斑病的危害。
Shandong Province Wendeng County Bureau of Agriculture, farmers on the prevention and treatment of sweet potato black spot disease made some investigations and experiments. Prove the use of shallow cover when raising seedlings approach, can greatly reduce the hazards of black spot disease.