The research results are as follows. Potassium fertilizer can significantly increase the amount of N, P2O5 and K2O absorption and accumulated of spring maize on dry land 40,45 and 48 percent, respectively.

• 施用钾肥显著增加N、P2O5、K2O的吸收累积量,平均分别增长40%25、45%25、48%25;