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在山药栽培中，施肥直接影响到快茎的膨大及产量的形成。在施足基肥的前提下，块茎生长初期和盛期施肥量分别占总追肥量的60％和40％，结合生长后期的根外追肥，可确保其地上部有足够的光合面积，为地下块茎的迅速膨大及膨大盛期的延长提供丰富的光合产物，从而夺得高产稳产。
In yam cultivation, fertilization directly affects the formation of fast stem swelling and yield. Under the premise of Shizujifei, tuber growth and fertilizer application rates accounted for 60% and 40% of the total amount of topdressing respectively. Combining the top dressing with top-dressing, it could ensure that there was enough photosynthetic area in the shoot. The rapid expansion and expansion of the expansion period provides abundant photosynthetic products, which won the high and stable yield.