Device and method for rapidly detecting nutrient releasing rate of controlled-release fertilizer based on electric conductivity method
A technology of controlled release fertilizer and electrical conductivity, applied in the direction of material resistance, etc., can solve the problems of complicated operation steps, long time-consuming, increased errors, etc., and achieve the effects of short analysis time, avoiding experimental errors, and accurate moving positions.
Inactive Publication Date: 2015-12-02
SHANDONG AGRI UNIV FERTILIZER TECH CO LTD
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However, due to the cumbersome operation steps and long time-consuming in the direct determination process of chemical method, the error caused by human operation increases accordingly
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[0036] When conducting conductivity measurement, the whole device needs to be placed in a constant temperature box (25°C).
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The invention belongs to the technical field of a test for detecting the nutrient releasing rate of a controlled-release fertilizer, relates to a device and method for rapidly detecting the nutrient releasing rate of the controlled-release fertilizer based on an electric conductivity method, and particularly relates to a device and method for rapidly detecting the still water dissolution rate and the accumulation releasing rate of the controlled-release fertilizer based on the electric conductivity method. The device comprises a bracket, a water feeding device, a glass container, a digital display electric conductivity instrument, an electronic stirrer, a PCL control system for controlling detection steps and the like. With the adoption of the special device, an uneven concentration distribution phenomenon caused by external temperature fluctuation and long-time standing of a solution to be detected is avoided; and the detected electric conductivity value of a nutrient solution is relatively reliable and accurate, and meanwhile, the operation time is greatly shortened.
Description
technical field [0001] The invention belongs to the technical field of testing the nutrient release rate of controlled-release fertilizers, and relates to a device and method for rapidly detecting the nutrient release rate of controlled-release fertilizers based on the electrical conductivity method, in particular to a method for rapidly measuring the hydrostatic dissolution of controlled-release fertilizers based on the electrical conductivity method rate and cumulative release rate devices and methods. Background technique [0002] The slow / controlled release performance of coated fertilizers is one of the important indicators for evaluating its quality and effective application. At present, the methods for evaluating the slow / controlled release performance of coated fertilizers mainly include hydrostatic dissolution method and soil dissolution method. Compared with the soil dissolution method, the static water dissolution method is widely used by major slow / controlled rel...
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IPC IPC(8): G01N27/06
Inventor 马学文丁方军禹化果孟庆羽吴凤林朱福军焦安浩
Owner SHANDONG AGRI UNIV FERTILIZER TECH CO LTD
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