The yield of annual?root lotus was 19.9% higher than that of the control, the decline of yield resulted from the reduction of fructification percentage and the weight of single seed.

• 新植子莲与宿根子莲单株产量存在较大差异；新植子莲的产量比宿根子莲(两年)高19.；9%25；造成宿根子莲产量下降的主要原因是结实率和单粒干重减少所致；而与单株莲蓬数、单株心皮数关系不大。