| 不同施氮水平对水稻产量、吸氮量及土壤肥力的影响 |
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| 引用本文： | 向圣兰,刘敏,陆敏,张丽佳,黄明蔚.不同施氮水平对水稻产量、吸氮量及土壤肥力的影响[J].安徽农业科学,2008,36(19). |
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| 作者姓名： | 向圣兰 刘敏 陆敏 张丽佳 黄明蔚 |
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| 作者单位： | 华东师范大学地理学系地理信息科学教育部重点实验室,上海,200062 |
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| 基金项目： | 国家自然科学基金
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上海市农业"四新"技术推广项目 |
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| 摘 要： | 目的]研究不同施氮量对水稻产量、吸氮量、土壤肥力情况的影响。方法]通过大田定位监测和分析,研究上海郊区沟干泥水稻土不同施肥处理对水稻产量、吸氮量及土壤肥力的影响。结果]常规施肥处理产量与减量处理作物产量差异不显著(P>0.05),生物量高于减量施肥,但籽粒比重减少;吸氮量高于减量施肥,种植前后土壤氮含量变化差距不大。结论]减量施肥不会降低土壤后续生产力。
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| 关 键 词： | 水稻 施氮 产量 土壤肥力 |
Effects of Different Nitrogen Applications on Grain Yield and Soil Fertility |
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| XIANG Sheng-lan et al.Effects of Different Nitrogen Applications on Grain Yield and Soil Fertility[J].Journal of Anhui Agricultural Sciences,2008,36(19). |
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| Authors: | XIANG Sheng-lan |
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| Abstract: | Objective]The research aimed to study the effects of different nitrogen applications on grain yield,nitrogen uptake and soil fertility.Method] Based on the field experiments and analysis,the effects of N fertilizer on its grain yield,absorption contents of nitrogen and soil fertility were studied.Result] The results indicated that the conventional fertilizer treatment and decrement treatment had insignificant difference on the grain yield(P>0.05).The biomass of conventional fertilizer was higher than the latter but the seed rate was lower and the absorption content of nitrogen was higher than the latter.The soil total N content after planting changed a little then before.Conclusion] Reducing the fertilizer rate would not influence soil subsequent productivity. |
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| Keywords: | Rice Nitrogen application Yield Soil fertility |
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