| 基于常规土壤有效磷(Olsen法)分析的高效测试技术研究 |
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| 引用本文： | 杨俐苹,白由路,王磊,王贺,卢艳丽.基于常规土壤有效磷(Olsen法)分析的高效测试技术研究[J].中国土壤与肥料,2011(3):87-91. |
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| 作者姓名： | 杨俐苹 白由路 王磊 王贺 卢艳丽 |
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| 作者单位： | 农业部作物营养与施肥重点实验室,中国农业科学院农业资源与农业区划研究所,北京100081 |
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| 摘 要： | 提高常规方法土壤测试的效率是我国测土配方施肥亟待解决的技术问题。通过30个有代表性的土样研究了与现代化测试技术手段相应的土壤有效磷(Olsen-P)的分析过程的改进和提高,结果显示:700 nm波长比色测定土壤有效磷比882 nm波长测定有显著正偏差,土壤有效磷的比色测定应该用882 nm波长以消除土壤可溶有机质影响;改进的钼锑抗显色剂10 min可稳定显色,大大缩短了比色测定需要等待的时间,且测定结果与原有测定过程测定结果一致。同时改进的显色剂稳定时间长,24 h的测定结果和10 min测定结果没有差异。土壤有效磷测定显色过程采用稀释加液器和比色测定中采用泵吸式进样器,可以大大提高土壤测试效率。
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| 关 键 词： | 土壤有效磷 土壤测试 测试效率 |
Study on the method of determining available phosphorus (Olsen-P) with high testing efficiency |
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| YANG Li-ping,BAI You-lu,WANG Lei,WANG He,LU Yan-li.Study on the method of determining available phosphorus (Olsen-P) with high testing efficiency[J].Soil and Fertilizer Sciences in China,2011(3):87-91. |
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| Authors: | YANG Li-ping BAI You-lu WANG Lei WANG He LU Yan-li |
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| Institution: | YANG Li-ping,BAI You-lu,WANG Lei,WANG He,LU Yan-li(Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization,Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081) |
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| Abstract: | Improve efficiency of Chinese traditional soil testing method is eager to be solved in soil testing and fertilizer recommendation action.It was studied that technical advances and adjustment of the method applying in the determination of available phosphorus(Olsen-P)with modern testing technology.Research using 30 soil samples indicated that amount of high bias associated with the 700 nm relative to the 882 nm wavelength was highly soil dependent.The 882 nm wavelength was superior and did not have a soil so... |
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| Keywords: | soil available P Olsen-P soil testing efficiency |
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