| 长期定位施肥对土壤养分和玉米产量的影响 |
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| 引用本文： | 董旭,娄翼来.长期定位施肥对土壤养分和玉米产量的影响[J].农村实用技术与信息,2008(1):9-11. |
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| 作者姓名： | 董旭 娄翼来 |
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| 作者单位： | [1]辽宁省土壤肥料总站,沈阳110034 [2]中国科学院沈阳应用生态研究所,沈阳110016 |
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| 摘 要： | 通过对辽宁凤城棕壤长期定位监测点其中8年试验结果的统计分析,明确了长期不同施肥处理对土壤养分和玉米产量的影响。结果显示：较不施肥对照相比,长期不同施肥均提高了土壤有机质和速效氮、磷、钾含量。总的来说,土壤培肥效果以有机肥配施化肥好于相应的单施化肥或有机肥,化肥组合以氮磷钾或氮磷配施效果更好,单施氮肥相对较差。不同施肥处理对玉米产量的影响与上述养分的变化规律相似,且相关分析表明玉米产量与土壤碱解氮和速效磷含量密切相关。综上说明,在施用有机肥的基础上,合理配施氮磷钾肥,是该地区提高土壤肥力和实现玉米增产的最佳方案。
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| 关 键 词： | 长期施肥 土壤养分 作物产量 |
| 文章编号： | 1005-4650（2008）01-0009-03 |
| 收稿时间： | 2007-12-08 |
Effect of Long-term Fertilization on Soil Nutrients and Corn Yield |
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| Authors: | DONG Xu LOU Yi-lai |
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| Abstract: | The results from long-term fertilization field experiment in FengCheng of Liaoning indicated that, each of fertilization treatments increased soil organic matter, available N, P and K content, compared to no fertilization treatment. The effect was shown better with organic fertilizer combined with chemical fertilizer than the corresponding application of any of them alone. And it also was shown better with combined fertilization of N, P and K or N and P than N fertilization alone. The changing law of corn yield affected by fertilizations was similar to soil nutrients studied. Corn yield was significantly correlated with soil organic matter, available N and P contents. So, the conclusion that, the proper combined fertilization of N, P and K based on organic fertilizer application is the optimal fertilization scheme to increase corn yield and soil fertility, can be made. |
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| Keywords: | long-term fertilization soil nutrient corn yield |
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