The results showed that the potassium surplus was 57.72 (kg/hm~2) in NK treatment and deficit of 192.97 (kg/hm~2) in NPK treatment during the 1978 to 2000 years.

 
  • 結果表明,1978年到2000年,土壤鉀素收支平衡的狀況為:氮鉀肥處理鉀盈余57 72kg/hm2,氮磷鉀肥處理鉀虧缺192 90kg/hm2。
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