• ISSN 1008-505X
  • CN 11-3996/S
李青军, 张炎, 胡伟, 孟凤轩, 冯广平, 胡国智, 刘新兰. 氮素运筹对玉米干物质积累、氮素吸收分配及产量的影响[J]. 植物营养与肥料学报, 2011, 17(3): 755-760. DOI: 10.11674/zwyf.2011.0284
引用本文: 李青军, 张炎, 胡伟, 孟凤轩, 冯广平, 胡国智, 刘新兰. 氮素运筹对玉米干物质积累、氮素吸收分配及产量的影响[J]. 植物营养与肥料学报, 2011, 17(3): 755-760. DOI: 10.11674/zwyf.2011.0284
LI Qing-jun, ZHANG Yan, HU Wei, MENG Feng-xuan, FENG Guang-ping, HU Guo-zhi, LIU Xin-lan. Effects of nitrogen management on maize dry matter accumulation, nitrogen uptake and distribution and maize yield[J]. Journal of Plant Nutrition and Fertilizers, 2011, 17(3): 755-760. DOI: 10.11674/zwyf.2011.0284
Citation: LI Qing-jun, ZHANG Yan, HU Wei, MENG Feng-xuan, FENG Guang-ping, HU Guo-zhi, LIU Xin-lan. Effects of nitrogen management on maize dry matter accumulation, nitrogen uptake and distribution and maize yield[J]. Journal of Plant Nutrition and Fertilizers, 2011, 17(3): 755-760. DOI: 10.11674/zwyf.2011.0284

氮素运筹对玉米干物质积累、氮素吸收分配及产量的影响

Effects of nitrogen management on maize dry matter accumulation, nitrogen uptake and distribution and maize yield

  • 摘要: 田间小区试验,研究了氮素运筹对玉米干物质累积、氮素吸收分配及产量的影响。结果表明,施氮和有机肥可以延长干物质积累的旺盛时期,使玉米干物质总量积累速率最大的时刻推后1~3d,增加了玉米的干物质积累量。氮肥配施有机肥能延长氮素积累的旺盛时期,其中,N2+M处理氮素积累的旺盛时期△t分别比N0、N1、N2、N3和FP处理延长了6、4、6、1和7d,该时段吸N量比FP处理增加 0.25 g/plant,比等氮量的N2处理增加0.24 g/plant。播前施有机肥 30 t/hm2,在减 N 26.83%的情况下,玉米吸氮量比常规施肥(FP)提高 6.52%,氮素利用率达54.31%,高于常规施肥的 33.27%;玉米增产24.12%,比常规施肥增收2696元/hm2。

     

    Abstract: The effects of nitrogen management on maize dry matter accumulation, nitrogen uptake and distribution and maize yield were studied through a plot field experiment. The result showed that application of nitrogen fertilizer and organic matter could prolong the vigorous time of dry matter accumulation, postpone the maximum accumulation rate by 1~3d compared to the other treatments. Application of N combined with organic fertilizer could also delay the time of maximum N accumulation rate, prolong the vigorous period of N accumulation. The treatment of N2+M prolonged the vigorous period of N accumulation △t by 6 d、4 d、6 d、1 d、7 d compared to N0、N1、N2、N3、FP treatments respectively, increased the nitrogen uptake by 0.25 g/plant compared to FP treatment, and by 0.24 g/plant compare to treatments with equal N rate. Using organic fertilizer 30 t/hm2 as base fertilizer, under the condition of N application rate reduced 26.83%, enhanced the N uptake by 6.52% compare to the local conventional fertilization. The nitrogen utilization was 54.31% which was 33.27% higher than that under conventional fertilization, It could also increase he maize yield by 24.12% and the income by 2696 yuan/ha compare to conventional fertilization.

     

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