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甘薯病毒病导致甘薯品种种性退化 ,产量、品质降低。在周口大田试验表明 :脱毒甘薯和科学栽培方法相结合 ,是提高甘薯产量 ,改进品质的经济途径。
Sweet potato virus disease leads to sweet potato variety degeneration, yield, quality reduced. Field experiment in Zhoukou showed that the combination of virus-free sweet potato and scientific cultivation method is an economic way to improve sweet potato yield and improve quality.