| 不同类型氮肥对夏玉米产量、氮肥利用率及土壤氮素表观盈亏的影响 |
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| 引用本文： | 石岳峰,张民,张志华,宋瑞磊,朱强.不同类型氮肥对夏玉米产量、氮肥利用率及土壤氮素表观盈亏的影响[J].水土保持学报,2009,23(6). |
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| 作者姓名： | 石岳峰 张民 张志华 宋瑞磊 朱强 |
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| 作者单位： | 山东农业大学资源与环境学院,山东,泰安,271018 |
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| 基金项目： | 国家科技支撑计划，国家自然科学基金 |
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| 摘 要： | 通过田间小区试验,比较研究了不同肥料类型、不同施氮量对夏玉米产量、氮肥利用率、土壤氮素表观盈亏量及植株氮素累积萤的影响.结果表明,夏玉米产量随施氮量增大而增大,但施肥过量产量降低,同等施氮条件下,控释掺混氮肥各处理夏玉米产量和氮肥利用率均高于普通尿素处理.施氮显著增加了0-40cm土层土壤无机氮含量,同时显著提高了玉米生长中后期植株体内氮素含量.经夏玉米季后,除高量施氮的T4,T6处理出现土壤氮索表观盈余外,其余处理均出现土壤氮素表观亏缺,施氮后土壤表观盈余量增加,且随施氮量的增加而增加.
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| 关 键 词： | 氮素利用效率 土壤氮素表观盈亏量 植株氮素累积量 |
Effects of Different Types of Nitrogen Fertilization on Yield,N Use Efficiency and Apparent Budget of Soil Nitrogen In Summer Maize |
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| SHI Yue-feng,ZHANG Min,ZHANG Zhi-hua,SONG Rui-lei,ZHU Qiang.Effects of Different Types of Nitrogen Fertilization on Yield,N Use Efficiency and Apparent Budget of Soil Nitrogen In Summer Maize[J].Journal of Soil and Water Conservation,2009,23(6). |
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| Authors: | SHI Yue-feng ZHANG Min ZHANG Zhi-hua SONG Rui-lei ZHU Qiang |
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| Abstract: | This experiment was conducted to explore the effects of different N strategies on yield,nitrogen use efficiency(NUE),apparent budget of soil N(ABSN)and content of N in plant.The results showed that yield increased with the application of N fertilizer,and yield reduced with the excessive N application rate.With the same nitrogen,the maize yield and nitrogen use efficiency of controlled-release nitrogen fertilizer (CRNF)with higher level compared with common urea.The mineral N content in soil layer(0-40 cm)are significantly increased with the increment of N application rate.The nitrogen contents in the plant and grain are increased by application of nitrogen fertilizer.After summer maize season,all treatments showed soil N deficit(SND)except T4,T6 and the amount of SND decreased with the increment of N application rate. |
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| Keywords: | nitrogen utilization efficiency apparent budget of soil nitrogen nitrogen accumulation in plant |
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