CAJ | 학술논문

为研究氮素对油葵植株氮磷钾养分积累和产量的影响，采用田间试验方法，在宁夏中部干旱带同心地区进行了油葵肥料试验。结果表明，在供试土壤条件下，氮磷钾养分积累均呈“S”型曲线，符合Logistic方程。施氮量在6～18kg/667m2之间时，均促进油葵对氮磷钾的吸收。其中，100kg籽粒所需N、P2O5、K2O范围分别是5．68～6．19kg、4．32～4．62kg、14．82～21．20kg，三要素（N∶P2O5∶K2O）平均比例为1∶0．76∶2．93。成熟期时，氮磷钾总积累量均是N2P2K2处理最高，分别达到47．99g/株、35．45g/株、152．30g/株。当施氮量为10．53kg/667m2时，产量达最高值221．02kg/667m2，最佳经济效应施氮量为9．54kg/667m2，最佳经济效益产量为220．48kg/667m2。
위연구담소대유규식주담린갑양분적루화산량적영향，채용전간시험방법，재저하중부간한대동심지구진행료유규비료시험。결과표명，재공시토양조건하，담린갑양분적루균정“S”형곡선，부합Logistic방정。시담량재6～18kg/667m2지간시，균촉진유규대담린갑적흡수。기중，100kg자립소수N、P2O5、K2O범위분별시5．68～6．19kg、4．32～4．62kg、14．82～21．20kg，삼요소（N∶P2O5∶K2O）평균비례위1∶0．76∶2．93。성숙기시，담린갑총적루량균시N2P2K2처리최고，분별체도47．99g/주、35．45g/주、152．30g/주。당시담량위10．53kg/667m2시，산량체최고치221．02kg/667m2，최가경제효응시담량위9．54kg/667m2，최가경제효익산량위220．48kg/667m2。
To better understand the nutrition of oilseed sunflower plants,fertilizer field experiment was con-ducted at Tongxin in Ningxia to investigate the effects of N,P and K fertilizers on yield.Results showed that N fer-tilizer affected organ's NPK accumulation at different growth stages.The accumulations of the three elements showed S curves along with the growth,imitated by Logistic equations.In the maturity stage,100 kg seeds of sunflower were obtained under average nutrition ratio (N∶P2O5∶K2O)of 1∶0.76∶2.93.Under the N2P2K2 treatment (12kg/667m2 N,6kg/667m2 P2O5 and 4kg/667m2 K2O),the highest total accumulations reached 47.99g/plant of N,35.45g/plant of P and 152.30g/plant of K respectively.The top yield reached 221.02kg/667m2 under 10.53 kg/667m2 of N fertilizer.The top economic yields reached 220.48kg/667m2 under 9.54kg/667m2 of N fertilizer.