Soil with a high content of organic matter and water. The term usually refers to peat. The USDA defines an organic soil as one with a minimum of 20–30% organic matter, depending on the clay content.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。