Karst area soil nutrient reserve sampling and calculating method
A soil nutrient and calculation method technology, applied in the direction of removing certain component weighing, soil material testing, material inspection products, etc., can solve the problems of estimation uncertainty, without considering regional specificity, etc., and achieve accurate data acquisition , Reasonable design and strong operability
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[0026] Example 1:
[0027] A method for sampling and calculating soil nutrient reserves in karst areas, the steps are:
[0028] (1) Establish sample plots: select typical ecosystems in the karst area, and set up three 20m×20m standard plots each with a 25m interval between the plots when the site conditions are basically the same.
[0029] (2) Calculate the average soil thickness: first divide the sample plot into 16 small plots of 5m×5m, and obtain 25 grid points for each, use a soil drill to measure the soil thickness of each grid point, and calculate the average soil thickness of the standard sample plot .
[0030] (3) Digging section and sampling: In each standard sample plot, a typical soil section is dug and sampled according to the average thickness of the soil. Because the soil layer is thin, three ring cutters are taken for every 10cm soil layer to determine the soil bulk density. Take 500g soil samples at the same time; at the 4 corners and the middle of each standard sampl...
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