| 关于平衡施肥中土壤供肥性能的研究 |
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| 引用本文： | 李金凤,姜娟,赵斌,路钰,张中原.关于平衡施肥中土壤供肥性能的研究[J].土壤通报,2002,33(5):351-355. |
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| 作者姓名： | 李金凤 姜娟 赵斌 路钰 张中原 |
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| 作者单位： | 1. 辽宁省土肥总站,辽宁,沈阳,110034
2. 沈阳市土肥站,辽宁,沈阳,110034 |
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| 摘 要： | 以田间试验所设的缺素区产量代替无肥区产量 ,所建立的定产式更接近实际 ,增加了土壤供肥量的计算量 ,减少施肥量。缺素区产量及其养分吸收量是计算土壤供肥量、土壤有效养分校正系数和相对产量等的基础参数。文中讨论的确定土壤供肥量的三种方法精度均较高 ,吻合度均大于 90 %。使平衡施肥建议施肥量达到定量水平
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| 关 键 词： | 土壤供肥量 定产式 测土值 有效养分 校正系数 相对产量 |
| 文章编号： | 0564-3945(2002)05-0351-05 |
| 修稿时间： | 2001年8月21日 |
Properties of Soil Nutrient-supply in the Balanced Fertilization Practices |
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| LI Jin-feng ,JIANG Juan ,ZHAO Bin ,LU Yu ,ZHANG Zhong-yuan.Properties of Soil Nutrient-supply in the Balanced Fertilization Practices[J].Chinese Journal of Soil Science,2002,33(5):351-355. |
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| Authors: | LI Jin-feng JIANG Juan ZHAO Bin LU Yu ZHANG Zhong-yuan |
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| Institution: | LI Jin-feng 1,JIANG Juan 1,ZHAO Bin 1,LU Yu 1,ZHANG Zhong-yuan 2 |
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| Abstract: | A formula was established by the outputs of nutrient-deficient plots instead of the CK plots, which is near to the natural conditions and lead to the increase of soil nutrient-supplying potential but the decrease of fertilization. The output and the amount of nutrient uptake at the nutrient deficient plots are the basic parameters for forecasting the soil nutrient-supplying capacity and correcting the coefficients of available nutrients. The three methods discussed in the paper had higher precision in the forecast of soil nutrient-supply. The fitting value was over 90%. |
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| Keywords: | Soil nutrient-supplying Formula Soil nutrient Corrected coefficient Available nutrients Relative output |
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