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The first method is to discuss soil agrochemical analysis projects with many analytical methods. Some of these methods are classic methods, some are recommended methods, and some are general methods. Soil agrochemical analysis requires rapid, batch, low-cost and accurate analysis. All laboratories can compare methods based on their own situation, and share their experiences. Such as the selection of extractants, the choice of colorimetric wavelength, the choice of redox agents, etc.
The second is that the data of the data review soil agrochemical analysis all have certain relevance and range of values. Such as soil organic matter and total nitrogen, full amount of nutrients and available nutrients. The laboratory personnel should have a general understanding of the range of values ​​of some soil agrochemical analyses.
Third, the data comparison mainly includes the mutual comparison method between laboratories (comparison of test results by different laboratories sending the same sample to each other), the reference comparison method (using the reference sample issued by the superior department for comparison of differences), and the insertion of standards. Method (determined by inserting a standard sample of known concentration into the sample to be tested), error comparison method (parallel test by error theory).
Soil agrochemical analysis work skills
The soil agrochemical information collection system has automated the information acquisition of soil testing and fertilization, but in the process of use, it can pay attention to the following aspects: