甘薯实现高产的重要条件之一,就是适时施足肥料,满足甘薯各生育阶段正常生长对养分的需求。那么,如何给薯田施肥呢?一、甘薯的需肥规律甘薯对肥料的要求,以钾肥最多,氮肥次之,磷肥需要较少。甘薯对三种肥料的需求情况,因生育期不同而异。钾肥的吸收从栽插到收获都比氮、磷多,尤其在块根膨大期更为明显;氮肥以茎叶生长时期吸收较 Sweet potato to achieve high yield one of the important conditions is timely enough fertilizer to meet the normal growth of sweet potato during the growth of the nutrient needs. So, how to fertilize the potato it? First, the law of sweet potato needs Fertilizer sweet potato requirements to potassium up, followed by nitrogen, phosphate less. The demand of sweet potatoes for three types of fertilizers varies according to the growth period. Potassium fertilizer from planting to harvest than nitrogen, phosphorus, especially in tuberosity period more obvious; nitrogen fertilizer to stem and leaf during the absorption of more