| 氮素运筹对玉米干物质积累、氮素吸收分配及产量的影响 |
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| 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. |
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| 作者姓名： | 李青军 张炎 胡伟 孟凤轩 冯广平 胡国智 刘新兰 |
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| 作者单位： | 1. 新疆农业科学院土壤肥料与农业节水研究所,新疆乌鲁木齐,830091
2. 新疆博尔塔拉蒙古自治州农技推广中心,新疆博乐,833421 |
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| 基金项目： | 国家"十一五"科技支撑计划项目,国际植物营养研究所(IPNI)项目 |
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| 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。
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| 关 键 词： | 氮素 玉米 吸收分配 产量 |
| 收稿时间： | 2010-06-22 |
Effects of nitrogen management on maize dry matter accumulation,nitrogen uptake and distribution and maize yield |
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| 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].Plant Nutrition and Fertilizer Science,2011,17(3):755-760. |
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| Authors: | LI Qing-jun ZHANG Yan HU Wei MENG Feng-xuan FENG Guang-ping HU Guo-zhi LIU Xin-lan |
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| Affiliation: | LI Qing-jun1,ZHANG Yan1,HU Wei1,MENG Feng-xuan1,FENG Guang-ping1,HU Guo-zhi1,LIU Xin-lan2(1 Institute of Soil and Fertilizer,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China,2 Agricultural Technology Promotion Center,Xinjiang Boertala Mongolia Self-rule State,Bole 833421,China) |
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| 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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| Keywords: | nitrogen maize nitrogen uptake and distribution yield |
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