宝清县地处黑龙江省东部,全年无霜期132天,为了合理利用当地有效积温,发展高效农业,增加农民收入,宝清县小城子镇农业技术服务中心在当地推广了早春覆膜马铃薯—秋白菜栽培模式,该模式已在本县发展到8 000亩。覆膜马铃薯平均亩产2 750 kg,每千克1.9元,亩收入5 225元;秋白菜平均亩产6 000 kg,每千克0.3元,亩收入1 800元,两茬作物亩收入共计7 025元,最高亩收入可 Baoqing County is located in the eastern part of Heilongjiang Province, the annual frost-free period of 132 days, in order to make rational use of local effective accumulated temperature, develop efficient agriculture and increase farmers’ income, Baocheng Town Agricultural Technology Service Center in the local promotion of early spring covered potato - autumn Cabbage cultivation mode, the model has been developed to 8,000 acres in the county. The average yield per mu of coated potato was 2 750 kg, 1.9 yuan per kilogram, and the income of mu was 5 225 yuan. The average yield of autumn cabbage was 6 000 kg, 0.3 yuan per kilogram, and the income of mu was 1,800 yuan. , The highest mu income can be