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甜菜的生物学特性和经济价值,决定了其良种繁育技术的特殊性。我省甜菜良种繁育发展过程大致可划分为四个时期。一、1972年以前的初级阶段我省进行甜菜引种试验最早的时间是1915年(见甘肃省图书馆馆藏资料《甘肃
The biological characteristics and economic value of sugar beet determine the particularity of its breeding technology. Beet breeding in our province can be broadly divided into four stages of development. First, the primary stage before 1972, the first time in our province beet introduction test is 1915 (see the Gansu Provincial Library Collection Information "Gansu