“热抗白45天”大白菜,是武汉市洪山区益农蔬菜技术应用研究所培育成的一代杂种。该品种具有耐热、早熟、高产、抗病等特点,全生育期45天左右;5～8月都可播种,其中以7月中旬至8月中旬播种生长最好,产量最高(高产时亩产可达4000公斤)。现将其栽培技术要点介 “Heat-resistant white 45 days” Chinese cabbage, Hongshan District, Wuhan City, agricultural technology research institutes to cultivate a generation of hybrids. The variety has the characteristics of heat resistance, early maturity, high yield, disease resistance and so on. The whole growth period is about 45 days; it can be planted from May to August, of which the sowing is best and the yield is highest from mid July to mid August Production up to 4000 kg). Now the cultivation techniques of introduction