Recommended Chemical Soil Test Procedures for the North Central Region
Recommended Chemical Soil Test Procedures for the North Central Region
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发表时间：
1998
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通讯作者：
S. Dakota
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作者：
S. Dakota
在过去的30年里，NCR-13土壤测试和植物分析委员会成员一直在努力使与他们相关的土壤测试实验室的程序标准化。已经进行了大量的样品交换和实验，以确定测试方法、样品大小、土壤萃取剂比例、摇晃时间和速度、容器大小和形状以及其他实验室程序对测试结果的影响。通过这些活动，委员会制定了建议的土壤试验程序。实验表明，程序上的微小偏差可能导致测试结果的显著差异。提高土壤检测的可信度对所有实验室都有好处。所有实验室采用这些建议的程序将是朝着改善土壤测试形象迈出的重要一步，并有望提高基于土壤测试的肥料建议的完整性。中北部农业实验站在过去五十年进行的校正研究已被用来校正这些建议的程序。NCR-13希望大家清楚地认识到，公布这些测试和程序绝不意味着达到了最终目的。应继续研究和创新土壤测试方法。委员会强烈鼓励加大研究力度，设计更好、更快、更便宜和更准确的土壤测试。由于肥料的成本很高，以及许多与土壤有关的环境问题，只在需要的地方施用肥料，并按达到响应目标所需的每种元素的数量施用肥料，比以往任何时候都更加重要。实现这一目标的最大希望是更好的土壤测试和更好的与植物反应的相关性。NCR-13随时准备评估有前途的新土壤试验，并将在有明确理由的情况下迅速采取行动修改其建议。威斯康辛州。1996-97年的正式代表名单如下：本版《北中部地区推荐化学土壤试验程序》章节的作者和合著者是NCR-13委员会的官方代表，但有以下例外：作者身份本出版物在1980年和1988年在Bill Dahnke的领导下进行了修订，Bill Dahnke是NCR-13委员会的北达科他州代表，直到他退休。他对这两项修订的介绍原封不动地列在下面。NCR-13土壤测试和植物分析委员会邀请我担任这次修订的编辑，我认为这是一种荣誉和……
Over the past 30 years, the NCR-13 Soil Testing and Plant Analysis Committee members have worked hard at standardizing the procedures of Soil Testing Laboratories with which they are associated. There have been numerous sample exchanges and experiments to determine the influence of testing method, sample size, soil extractant ratios, shaking time and speed, container size and shape, and other laboratory procedures on test results. As a result of these activities , the committee arrived at the recommended procedures for soil tests. Experiments have shown that minor deviations in procedures may cause significant differences in test results. It is to the advantage of all laboratories that the credibility of soil testing be enhanced. The adoption of these recommended procedures by all laboratories would be a major step toward improving the image of soil testing and, hopefully, the integrity of fertilizer recommendations based on soil tests. Calibration studies conducted by the North Central Agricultural Experiment Stations over the past five decades have been used to calibrate these recommended procedures. NCR-13 wants it clearly understood that the publication of these tests and procedures in no way implies that the ultimate has been reached. Research and innovation on methods of soil testing should continue. The committee strongly encourages increased research efforts to devise better, faster, less expensive and more accurate soil tests. With the high cost of fertilizer , and with the many soil related environmental concerns, it is more important than ever that fertilizer be applied only where needed and in the amount of each element needed for the response goal. The best hope of attaining this goal is better soil tests and better correlations with plant response. NCR-13 stands ready to evaluate promising new soil tests, and with clear justification will move quickly to revise their recommendations. Wisconsin. The 1996-97 official representatives are listed below. The authors and co-authors of the chapters in this edition of Recommended Chemical Soil Test Procedures for the North Central Region are official representatives to the NCR-13 committee with the following exceptions: Authorship This publication was revised in 1980 and 1988 under the leadership of Bill Dahnke who was the North Dakota representative to the NCR-13 committee until his retirement. His introduction to those two revisions is included below without change. The NCR-13 committee on Soil Testing and Plant Analysis asked me to serve as editor for this revision, which I deemed an honor and a …