| 氮素用量对油葵氮磷钾养分吸收积累及产量的影响 |
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| 引用本文： | 王 蓉,何文寿,马玉波,任 然,赵 涛.氮素用量对油葵氮磷钾养分吸收积累及产量的影响[J].中国油料作物学报,2014,36(4):494. |
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| 作者姓名： | 王 蓉 何文寿 马玉波 任 然 赵 涛 |
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| 作者单位： | 宁夏大学农学院，宁夏回族自治区 银川，750021 |
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| 基金项目： | 国家自然科学基金（31160416）；国家科技支撑计划课题(2011BAD29B07-05) |
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| 摘 要： | 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。
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| 关 键 词： | 油葵 养分 施肥量 产量 |
Effects of nitrogen fertilizer application on NPK accumulations and yield for oilseed sunflower |
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| WANG Rong,HE Wen-shou,MA Yu-bo,REN Ran,ZHAO Tao.Effects of nitrogen fertilizer application on NPK accumulations and yield for oilseed sunflower[J].Chinese Journal of Oil Crop Sciences,2014,36(4):494. |
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| Authors: | WANG Rong HE Wen-shou MA Yu-bo REN Ran ZHAO Tao |
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| Abstract: | To better understand the nutrition of oilseed sunflower plants, fertilizer field experiment was conducted at Tongxin in Ningxia to investigate the effects of N, P and K fertilizers on yield. Results showed that N fertilizer 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 1:0.75:2.88. Under N2P2K2 treatment (12 kg/667m2 N, 6 kg/667m2 P2O5 and 4 kg/667m2 K2O), the highest total accumulations reached 47.99 g/plant of N, 35.45 g/plant of P and 152.30 g/plant of K respectively. The top yield reached 221.02 kg/667m2 under 10.53 kg/667m2 of N fertilizer. The top economic yields reached 220.48 kg/667m2 under 9.54 kg/667m2 of N fertilizer. |
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| Keywords: | Oilseed sunflower Nutrient Fertilization Yield |
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