soil organic layer

基本解释

The results show that soil organic carbon contents and storages in each soil layer increases with the increasing years of C.
结果表明，各层次土壤有机碳含量和储量随小叶锦鸡儿种植年限的增加而增加。
The variation of organic-mineral complex content and the distribution characteristics of organic carbon fractions in black soil plough layer under different tillage periods;
研究了不同耕作方式下黑土有机无机复合体组成及有机碳在各级复合体中的分布特征。
The article investigates and analyzes the content of organic matter and cationic exchange of upper and under layer of soil planting vegetable of 14 villages in Chenggong county.
对呈贡县14个村的蔬菜土壤上下层有机质含量和阳离子交换量进行调查分析。