| 1. | These organics impregnate large volumes of sandstone .
这种有机质渗入了大面积的砂岩。 |
| 2. | The organics are extracted with chloroform and weighed .
用氯仿将有机质提取出来并称重。 |
| 3. | Additions of organic matter to soil hasten calcium losses .
土壤增施有机质会促进钙的损失。 |
| 4. | In dry areas an organic sheet may be helpful and improve survival .
在干旱地区用有机质纸张可能有助，能提高成活率。 |
| 5. | 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。 |
| 6. | 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。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | 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。 |
| 10. | Spectral models for prediction of organic matter in black soil
黑土有机质含量高光谱模型研究 |
