黑龙江省是全国重点甜菜产区之一,近年来甜菜播种面积已稳定在五百万亩左右,年用种量六千余吨,是全国用种量最大的省区。因此甜菜种子工作直接关系到甜菜的产质量和经济效益。进入60年代以来,国内外文献资料大量报导露地越冬采种具有:方法简便省工,用地少,良种繁殖速度快,繁殖系数高,成熟期一致,单产高,成本低等优越性。据此,我省于 Heilongjiang Province is one of the key sugarbeet producing areas in China. In recent years, the sown area of ​​sugar beet has stabilized at about 5 million mu. The annual planting amount is over 6,000 tons, making it the largest province in the country for planting seeds. Therefore, the work of beet seeds is directly related to the quality and economic benefits of sugar beet. Since the 1960s, a large number of domestic and foreign literatures have reported that the winter solstice planting has the following advantages: simple and convenient method, less land use, faster seed multiplication, high multiplication coefficient, consistent mature stage, high yield and low cost. Accordingly, I province