脱毒甘薯的留种与安全贮藏仇洪华车爱萍（山东省德州市德城区农业局２５３０１６）留种：一是选无病地块留种，防止薯块带病入窖。从采苗圃剪蔓的夏薯留种很少带病。不能用春薯和炕苗、温床苗栽的夏薯留种，受水淹的地块也不宜留种。二是适时收刨，防止窖外冷害。如果在田... Sweet potato seed removal and safe storage Qiu Honghua car Aiping (Decheng District, Dezhou City, Shandong Province Bureau of Agriculture 253016) to stay: First, choose disease-free plots to stay species to prevent tubers sick into the pit. The summer sweet potato cuttings from the nursery are rarely sick. Can not use sweet potato and kang seedlings, seedlings planted summer seedlings planted water, flooded plots should not stay species. Second, timely collection plane to prevent cellar cold damage. If in the field ...