目前,甜菜一些主产国家已广泛利用露地越冬方法繁殖甜菜种子。这种方法采种,具有繁殖系数高、种子生产成本低等多种优点。 中国农业科学院甜菜研究所(下称我所),于1958—1965年对“甜菜露地越冬采种”进行了调查和研究。肯定了其优越性,确定了其适宜的播种期、有效的防寒措施、种子的产质量及其采种后代原料甜菜的经济性状等。 由于越冬后的种株,受高温与短日照影响,在个别年份某些地区“无效”植株率较高,种子成熟期不一致,并且有时种子产质量不稳定。因此,在具体推广应用中,应选择适宜的采种地区,采取优良的栽培措施,以保证种子优质与高产。 At present, some of the main producing countries of beet have widely used the winter wintering method to breed beet seeds. This method seed, with a high breeding coefficient, seed production costs and other advantages. Beet Institute of Chinese Academy of Agricultural Sciences (hereinafter referred to as I), from 1958 to 1965 on the “winter beet planting and planting” were investigated and studied. Affirmed its superiority, determined its suitable sowing date, effective measures to prevent cold, the quality of the seed and the economic traits of the beet, which is the seed of its seed. As overwintering species, under the influence of high temperature and short sunshine, in some years in some areas “invalid” plant rate is higher, the seed maturity is inconsistent, and sometimes the quality of seed production is not stable. Therefore, in the specific promotion and application, should select the appropriate mining areas, take good cultivation practices to ensure high quality seeds and high yield.