实踐証明,在增施肥料的前提下,讲究合理施肥,是获得甘薯丰产的关键。現将各地丰产甘薯的施肥技术,归納分析于后,供生产上参考。一、甘薯的生育規律及需肥特点掌握甘薯的生育规律和不同生育时期对肥料的需要情况,才能做到經济合理用肥,从而获得丰产。本省农民专家胡成愷同志多年的生产实踐証明:“紅皮白心”品种的生育規律是“前結、中旺、后大”,就是在扦插后20天左右开始形成薯块,然后是藤蔓的旺盛生長,到秋分以后藤蔓生長非常緩慢,薯块却迅速肥大。根据这一規律,他在施肥技术上采取施足基肥 Practice has proved that in the premise of increasing fertilizer, pay attention to rational fertilization, sweet potato is the key to yield. Now fertilization techniques around the sweet potato, inductive analysis, for the production of reference. First, the sweet potato fertility rules and characteristics of need to master the reproductive laws of sweet potato and different growth stages of the needs of fertilizer in order to achieve economic and rational use of fertilizers, so as to obtain high yield. The provincial peasant expert Comrade Hu Cheng Kai years of production practice has proved that: “Red White Heart” varieties of the law of birth is “before the knot, in the Wang, after the big” is about 20 days after the cuttings began to form tubers, and then vines Vigorous growth, to autumn after the vine growth is very slow, tubers are rapidly hypertrophy. According to this rule, he applied Shizujifei fertilizer technology