Estimate organic matter and organic carbon by the loss-on-ignition method to support soil-fertility assessment and fertilisation decisions.
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Organic matter from organic C | SOM = OC × 1.724 | Van Bemmelen 1890 |
| Organic carbon (Walkley-Black) | Walkley-Black wet oxidation | GB 9834-88 |
| SOM grading | SOM grading for cropland | 2nd National Soil Survey grading |
土壤有机质含量估算器是一款农业种植领域的在线工具。农业种植工具,帮助计算种植参数与产量。