CAJ | 학술논문

为了筛选甘薯施肥最佳配方,以甘薯品种商薯19为材料,采用田间小区试验,研究了不同氮、磷、钾肥配施用量对甘薯农艺性状和产量的影响。结果表明,甘薯的茎长、分枝数、茎粗、地上部鲜质量及结薯数总体以NPK4处理(氮、磷、钾肥配施比例为1∶1∶2,具体施用量为N 75 kg/hm2、P2 O575 kg/hm2、K2 O 150 kg/hm2)较为适宜；鲜薯产量以NPK4处理最高,达51066.67 kg/hm2,显著高于其他处理,比对照(不施肥处理)极显著增产13.42%；茎粗与地上部鲜质量呈显著正相关,分枝数与茎长呈显著负相关,结薯数与鲜薯产量呈显著正相关。
위료사선감서시비최가배방,이감서품충상서19위재료,채용전간소구시험,연구료불동담、린、갑비배시용량대감서농예성상화산량적영향。결과표명,감서적경장、분지수、경조、지상부선질량급결서수총체이NPK4처리(담、린、갑비배시비례위1∶1∶2,구체시용량위N 75 kg/hm2、P2 O575 kg/hm2、K2 O 150 kg/hm2)교위괄의；선서산량이NPK4처리최고,체51066.67 kg/hm2,현저고우기타처리,비대조(불시비처리)겁현저증산13.42%；경조여지상부선질량정현저정상관,분지수여경장정현저부상관,결서수여선서산량정현저정상관。
Using sweetpotato cv. Shangshu 19 as material,a plot field experiment was conducted to study the effects of different proportions of nitrogen( N) ,phosphorus( P) ,potassium( K) fertilizers on sweetpota-to agronomic traits and yield. The results showed that as far as the length of the vine,number of base bran-ches,stem diameter,aboveground fresh weight and root number of sweetpotato,the NPK4 treatment with N∶P∶K of 1∶1∶2 and N of 75 kg/ha was optimal. The NPK4 treatment obtained the highest fresh root yield of 51 066. 67 kg/ha,which was significantly higher than the other treatments,and the yield signifi-cantly increased by 13. 42% compared to the control without fertilizer. There was significant positive cor-relation between the stem diameter and aboveground fresh weight,significant negative correlation between the number of base branches and length of the vine,and significant positive correlation between the root number and fresh root yield.