Based on applying N and P fertilizers,the treatments with potassium fertilizer could increase the yield of mulberry leaf and the absorption of K in mulberry,and the effects of K2 treatments with 148.5kg K2O/hm2 was the highest.

• 此外；施钾还提高桑树对钾素的吸收利用；以K2处理(148.；5kg K2O/hm2)的施钾效果最好;