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甘薯生产上的良种化问题一直没有得到很好地解决,1958、1963年针对胜利百号退化问题先后提出过“选蔓留种”、“选纯复壮”等措施,实践证明,凡是连续采用此法,以符合原品种短、粗、壮特征的植株上剪蔓夏栽留种的增产效果就相当显著,但是这些措施没有认真推广开来,目前各地生产
The problem of seed production in sweet potato has not been solved well. In 1958 and 1963, there were measures such as “choosing species to stay alive” and “choosing pure rejuvenation” in response to the degeneration of Shengli Hundred Provinces. Practice has proved that those who adopt this Method to meet the original varieties of short, thick, strong characteristics of the plant cuttings on the planting of manchurian yield growth effect is quite significant, but these measures did not seriously promote it, the current production around