CAJ | 학술논문

通过前期试验结果氮磷钾配施基础上，调节氮磷钾比例，分析其对西北干旱区马铃薯生长和产量的影响。结果表明：在氮（N）-磷（P2O5）-钾（K2O）施用比例为12-10-8 kg/667 m2的基础上，分别减少或增加磷、钾的施用量对马铃薯前期地上部的生长无显著影响，而减少或增施氮肥对植株的生长和出苗均有抑制作用；在常规施肥（N-P2O5-K2O比例为12-10-8 kg/667 m2）基础上增施一定剂量的磷肥（P2O：10 kg/667 m2）可有效促进匍匐茎的膨大，从而提高商品薯率和产量，试验获得的最佳施肥量N-P2O-K2O比例为12-20-8 kg/667 m2。
통과전기시험결과담린갑배시기출상，조절담린갑비례，분석기대서북간한구마령서생장화산량적영향。결과표명：재담（N）-린（P2O5）-갑（K2O）시용비례위12-10-8 kg/667 m2적기출상，분별감소혹증가린、갑적시용량대마령서전기지상부적생장무현저영향，이감소혹증시담비대식주적생장화출묘균유억제작용；재상규시비（N-P2O5-K2O비례위12-10-8 kg/667 m2）기출상증시일정제량적린비（P2O：10 kg/667 m2）가유효촉진포복경적팽대，종이제고상품서솔화산량，시험획득적최가시비량N-P2O-K2O비례위12-20-8 kg/667 m2。
Based on previous test results of fertilizer application, NPK application ratio was adjusted and the influence of the NPK ratio on the growth and yield of potato was analyzed in the arid area of Northwestern China. The results showed that compared with the conventional fertilizer application (12-10-8 kg/667 m2), decrease or increase of potassium and phosphorus fertilizer rates had no significant effect on the aboveground growth at the early stage, however, decrease or increase of nitrogen inhibited the emergence and plant growth. Increase of phosphate (P2O5:10 kg/667 m2) based on the conventional fertilizer application rate (12-10-8 kg/667 m2) promoted stolons enlargement, thereby, the yield and marketable tuber percentage of potatoes shonld be enhanced. The experimental results indicated that the optimum fertilization rate of N,P and K was 12-20-8 kg/667 m 2.