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随着露地越冬采种甜菜在良繁比例中的扩大和良繁中心带向南推移,我国甜菜南繁种子已形成晋南、冀南、山东、苏北、皖北、豫北、陕西关中等生产基地,1985年南繁已达6,000余吨,占全国种子产量的50％以上,并继续扩大。目前,我国甜菜采种带正趋向最适地带,江苏、安徽一线约占南繁种的70％以上。根据这一进程,种子早熟,事关正在蓬勃兴起的甜菜南繁基地的巩固和发展,以及我国甜菜制糖业的经济效益和社会效益。种子早熟,已成为南北关注的一个突出问题。
With the open-field winter planting sugar beet in the expansion of the proportion of good propagation and the center of good propagation southward shift, China’s beet Nanfan seed has formed Jinnan, Jinan, Shandong, northern Jiangsu, northern Anhui, Northern Shaanxi and Shaanxi Guanzhong production base In 1985, Nanfan reached more than 6,000 tons, accounting for more than 50% of the national seed production and continued to expand. At present, the sugarbeet planting belt in our country is going to the most suitable zone, with about 70% of the south breeds in Jiangsu and Anhui. According to this process, the seeds are premature, which is related to the consolidation and development of the burgeoning beet Nanfan base and the economic and social benefits of sugar beet industry in our country. Precocious seeds have become a prominent issue concerning the north and south.