| 1. | Water storage in soil organic horizons is a further factor to consider .
在土壤有机质中的水分贮积是一个值得进一步考虑的因素。 |
| 2. | These compounds make up approximately 10 to 15% of the total organic matter in soils .
这些化合物占整个土壤有机质总量的10-15。 |
| 3. | Soil organic matter is the product of microbial decomposition of plant and animal residues .
土壤有机质是微生物分解植物和动物残体的产物。 |
| 4. | The organic matter in soil contains a small but fairly uniform proportion of phosphate .
土壤有机质中含有少量的磷酸盐，且其比例始终不变。 |
| 5. | A major portion of the soil organic matter is derived from the added and residual vegetative material .
加进去的和残留下来的植物物质则是土壤有机质的主要来源。 |
| 6. | Method for determination of soil organic matter
土壤有机质测定法 |
| 7. | An improvement on the heating condition of soil organic matter determination
土壤有机质测定方法加热条件的改进 |
| 8. | Influence of organic matter content on infiltration capacity of field soils
土壤有机质含量对土壤入渗能力影响的试验研究 |
| 9. | Determination of organic matter in forest soil and calculation carbon - nitrogen ratio
森林土壤有机质的测定及碳氮比的计算 |
| 10. | Accumulative regularity of organic matter and nitrogen content in sheltered ground
设施栽培土壤有机质和氮素含量的积累规律 |
