马铃薯是喜钾作物。近年来随马铃薯生产氮的投入量逐年增加，而磷、钾量相对较少，氮磷钾比例失调，制约产量、品质提高。鉴于我国化学钾资源贫乏，且价格较高的实际，自１９９６年以来，我们将江苏农林厅与南京农大联合开发的高效液体生物钾肥应用于马铃薯生产，利用生物钾细 Potato is a hi potassium crop. In recent years, with the potato input of nitrogen production increased year by year, while the phosphorus and potassium content is relatively small, the proportion of nitrogen, phosphorus and potassium imbalance, restricting output, quality improvement. In view of the fact that our chemical potassium resources are scarce and the prices are high, since 1996, we have applied the high efficiency liquid bio-potash fertilizer jointly developed by Jiangsu Agriculture and Forestry Department and Nanjing Agricultural University to potato production.