甜菜的种子在构造上可以分为多粒种和单粒种。多粒种在一个种球(聚花果)内含数粒种籽,发多个芽。这不仅带来间苗困难,而且间苗适期短,易造成苗间拥挤,影响幼苗生长发育;单粒种每一个种球内只有一粒种籽只发一个芽,既便于间苗又有利于幼苗正常生长,同时间苗适宜期也较多粒种相应延长。 Beet seeds are structurally divided into multiple species and single species. Multi-species in a bulbs (poly flowers fruit) contains a few seeds, a number of buds. This not only brings the seedling difficulty, but also the short duration of the seedling is easy to cause the seedling crowding, which will affect the growth and development of the seedling. Only one seed per seed in a single seed produces only one bud, which not only facilitates the seedling but also helps the seedling to be normal Growth, the same time more suitable seedling corresponding species longer.