The farmland nutrient balance of nitrogen,phosphorus,and potassium in Gansu Province was studied and the results show that N,P in this region are surplus,K is at a loss.

• 对甘肃省农田N、P、K养分平衡状况分析结果表明,甘肃省农田N、P、K养分平衡状况为N、P盈余,而K素亏损。