soil organic layer

基本解釋

The results show that soil organic carbon contents and storages in each soil layer increases with the increasing years of C.
結(jié)果表明，各層次土壤有機碳含量和儲量隨小葉錦雞兒種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機無機複郃躰組成及有機碳在各級複郃躰中的分佈特征。
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.
對呈貢縣14個村的蔬菜土壤上下層有機質(zhì)含量和陽離子交換量進(jìn)行調(diào)查分析。