甜菜多倍体品种是近年来国内外甜菜品种的主流。在我国东北、华北、宁夏、新疆等甜菜产区已大规模应用,取得了巨大的经济效益。张掖地区农科所引进甜菜多倍体品种“中甜——双丰309”,1990—1993年累计推广种植12.8万亩,占四年全区甜菜种植面积的35.5％,平均块根亩产量4240公斤,含糖率19.6％,比对照品种甘糖一号增产3.3％,提高含糖2.01度,亩产糖量853公斤,比对照提高12.7％。该品种由轻工部甜菜糖业研究所培育,具有加工品质优良,稳定性好、抗褐斑病、耐根病的特点,充分表现了多倍体甜菜品种丰产优质、抗逆性强的优势,1993年通过张 Sugarbeet polyploid varieties in recent years, the mainstream of sugar beet varieties at home and abroad. In China’s northeast, North China, Ningxia, Xinjiang and other beet producing areas have been large-scale application, and achieved great economic benefits. Sugar beet polyploid variety “Zhongtian-Shuangfeng 309” introduced by Zhangye Prefecture’s agricultural sciences was promoted. From 1990 to 1993, a total of 128,000 mu was planted and popularized, accounting for 35.5% of the beet planting area in the whole four years and an average of 4240 kilograms per mu yield , The sugar content was 19.6%, which was 3.3% higher than that of the control sugar variety Sugar Cane No.1. The sugarcane sugar content increased 2.01 degrees and the sugar yield per mu was 853 kg, increased by 12.7% compared with the control. This variety is cultivated by the Institute of Beet Sugar Industry, Ministry of Light Industry. It has the characteristics of good processing quality, good stability, resistance to brown spot and root-resistant disease and fully demonstrates the advantages of high yield and high quality of polyploid beet varieties and strong resistance. In 1993 by Zhang