长江下游地区露地越冬采种甜菜的适宜播期为８ 月上旬， 移栽期在９ 月中、下旬， 移栽期秧龄在８ ～１０ 片叶，适宜栽植密度５２５００ 株／ｈｍ２ 。冬前块根直径达４ ～５ｃｍ ，３ 月上旬挖顶芽，孕蕾期打花蕾，始花期根外喷施磷酸二氢钾，生育期要开沟降渍，及时防治病虫害 The suitable sowing date for planting beet in the open area in the lower reaches of the Yangtze River in early August was in the beginning of August and the transplanting period was in the middle of September and the end of the year. The transplanting period was 8 to 10 leaves and suitable planting density was 52,500 plants / hm2. Winter before the root diameter of 4 ~ 5cm, digging the top bud in early March, bud buds during pregnancy, the beginning of flowering root sprayed with potassium dihydrogen phosphate, growth period to ditch drop, timely prevention and control of pests and diseases