我国在８０年代后开始在生产上使用单粒型甜菜品种，单粒种的特点是根产量高，适用于纸筒育苗移栽和精量点播，有利提高甜菜单产和总产。但所用品种普遍存在着含糖低、抗病性差等问题，致使这类品种应用面积不大。目前国内外所使用的单粒种一般都是以单粒型育种材料为母本... China began to use single-grain sugar beet varieties in production after the 1980s. Single grain is characterized by high root yield, suitable for transplanting and precision-on-demand of paper tube seedling, which is beneficial to increase the yield and total yield of sugar beet. However, the prevalence of low sugar content of varieties, poor disease resistance and other issues, resulting in the application of such species is not large. At present, single species used at home and abroad are generally based on single grain type breeding materials as female parent ...