| 氮磷互作对春玉米产量及氮素吸收积累的影响 |
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| 引用本文： | 华 伟,曹国军,耿玉辉,车 明,韩圆圆,黄 岩.氮磷互作对春玉米产量及氮素吸收积累的影响[J].中国农学通报,2017,33(6):27-33. |
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| 作者姓名： | 华 伟 曹国军 耿玉辉 车 明 韩圆圆 黄 岩 |
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| 作者单位： | 吉林农业大学资源与环境学院,吉林农业大学资源与环境学院,吉林农业大学资源与环境学院,吉林农业大学资源与环境学院,吉林农业大学资源与环境学院,吉林农业大学资源与环境学院 |
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| 基金项目： | 国家科技支撑计划“玉米生理生化特性及肥料运筹机制研究”(2011BAD16B10)；国家科技支撑计划“粮食大面积均衡增产技术集成研究与 示范”(2012BAD04B02)。 |
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| 摘 要： | 研究旨在掌握玉米适宜的氮磷肥施用量,为吉林省东部春玉米高产和氮肥高效利用提供理论依据和技术支撑。采用田间小区试验的方法,设置氮肥和磷肥各5个施肥水平,研究不同氮磷水平的配合施用对春玉米产量及氮素吸收积累的影响。结果表明:在钾肥施用量相同(K_2O 120 kg/hm~2)的条件下,适宜的氮磷互作可显著提高春玉米产量,且影响效果表现为NP;随着生育期的进行,植株氮素积累量逐渐增加,成熟期达到峰值,其中氮磷互作量为N 280 kg/hm~2、P_2O_5 110 kg/hm~2时植株氮素积累量达到峰值,为338.9 kg/hm~2;适宜的氮磷互作可提高植株氮素吸收速度和阶段积累量,在生育后期维持较高的氮素积累量,且可获得较高的氮肥利用率、氮素吸收效率和氮肥偏生产力。综合考虑产量和氮素吸收利用效率等因素,在K_2O 120 kg/hm~2条件下,施N 280 kg/hm~2、P_2O_5 110 kg/hm~2,可获得较高的氮素吸收利用率,也可使产量达到最大值,为12796.4 kg/hm~2。
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| 关 键 词： | 氮磷互作 玉米 产量 氮素吸收积累 |
| 收稿时间： | 2016/4/26 0:00:00 |
| 修稿时间： | 2017/2/16 0:00:00 |
Interaction of Nitrogen and Phosphorus Affecting Spring Maize Yield and N Uptake Accumulation |
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| Abstract: | The research aimed to master the appropriate application amount of nitrogen and phosphorus fertilizer for maize and to provide theoretical basis and technical support for efficient use of nitrogen fertilizer and high yield of spring corn in eastern Jilin Province. Using field plot experiment, setting five nitrogen and phosphorus fertilizer levels, the influences of different levels of nitrogen and phosphorus combined fertilizationon spring maize yield and N absorption accumulation were studied. The results showed that under the condition of same application amount of K fertilizer (K2O 120 kg/hm2), appropriate nitrogen and phosphorus amount could significantly improve spring maize yield, and the influence effect was N>P. Along with the growth period, nitrogen accumulation of plant gradually increased, and reached the peak at mature period. When the amount of nitrogen and phosphorus was N 280 kg/hm2, P2O5 110 kg/hm2, the plant nitrogen accumulation reached the peak, which was 338.9 kg/hm2. Appropriate nitrogen and phosphorus interaction could improve the plant nitrogen absorption rate and the stage accumulation amount, maintain higher amount of accumulated nitrogen
in later stage of growth period and obtain higher nitrogen utilization efficiency, nitrogen absorption efficiency and nitrogen partial productivity. Taking maize yield and N absorption and utilization efficiency into comprehensive consideration, under the condition of K2O 120 kg/hm2, applying N 280 kg/hm2, P2O5 110 kg/hm2 can obtain higher nitrogen absorption efficiency, also can make maize yield reach the peak of 12796.4 kg/hm2. |
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| Keywords: | nitrogen and phosphorus interaction corn yield N accumulation |
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