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- soil organic matter fractions 土壤有机质部分
- Humin, which is not soluble in water at any pH value, generally constitutes the most abundant organic matter fraction in soil. 从分离、结构和作用3个方面，综述了土壤胡敏素的研究现状和最新进展，并对今后的研究方向进行了展望，以促进胡敏素研究的继续深入开展。
- As the major fraction of soil organic matter (SOM), humic substances (HS) are particularly important. 作为土壤有机质主体的腐殖物质的研究，一直受到各国学者的普遍重视。
- Variation of soil organic phosphorus fractions, and relationship of organic P and its fractions, with soil organic matter and readily available P were studied with Bowman-Cole method. 采用Bowman和Cole提出的有机P分组方法,对长期施肥条件下土壤有机P的组成变化以及有机P及其组分与有机质、速效P的关系进行研究。
- 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。
- 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。
- The results indicated that most of Ni were bound to Fe-Mn oxides and organic matter fractions, and majority of Cd were associated with carbonates, exchangeable and Fe-Mn oxides fractions. 镉主要以碳酸盐结合态、可交换态、铁锰氧化物结合态为主，三者佔总含量的94%25以上。
- DCCA ordination showed that soil organic matter content was the decisive factor to the development of communities. DCCA排序进一步表明了土壤有机质含量是所有因子中对植物群落发展起决定性作用的主要环境因素.
- The nitrate content in turnip was reduced,while soil organic matter content in the rhizosphere was signifi... 施用有机肥料萝卜的硝酸盐含量明显下降,当季作物收获后根际土壤有机质含量明显提高。
- Soil organic matter (SOM) distribution has obvious spatial differences as fertility index in grassland. 摘要作为草地土壤重要肥力指标的有机质，存在明显的空间差异。
- Capacity measuration is the prevailing method of soil organic matter determination. 容量法是土壤有机质测定中普遍使用的方法。
- Jenkinson D S,Rayner J H.The turnover of soil organic matter in some of the Rothamsted classical experiments[J]. 徐秋芳;姜培坤;沈泉.;灌木林与阔叶林土壤有机碳库的比较研究[J]北京林业大学学报;2005;27(2)
- The soil organic matter accumulated more rapidly with higher C /N ratio organic manures which contained more lignin. 施用碳氮比大，木质素含量高的有机肥，土壤有机质积累快;
- Application of fertilizers raised the contents of soil organic matter and NPK, and significant in application manures. 施肥提高了土壤有机质及N、P、K养分含量,施有机肥土壤养分含量增加显著。
- After the contour hedgerow had been planted for five years, the contents of soil organic matter increased prominently. 在该区种植新银合欢、马桑、黄荆等植物篱5年后，土壤有机质的含量明显增加；
- Soil organic matter contents can also be raised through continuously plowing under stalks into land. 同时，近年来秸秆还田的增加有助于提高土壤有机质含量。
- Soil organic matter is the uppermost factor affecting soil dehydrogenase activity of natural wetland. 土壤有机质成为影响冲积平原湿地土壤氧化还原酶活性最主要的因素。
- There were apparent effects of long-term fertilization on labile organic matter fractionations in red soil and grey-desert soil,while its effects were less in loess soil and fluvo-aquic soil. 潮土以中活性有机质为主。施肥对红壤、灰漠土活性有机质组分影响明显,对垆土、潮土影响相对较小。
- The soil organic matter and total N stabilize basically, available P increase while alkaline hydrolyze N decrease obviously in the cornrice rotation. 玉米、稻连作土壤有机质和全氮基本稳定，有效磷呈上升趋势，碱解氮和速效钾下降趋势明显。
- In submerged systems, soil organic matter serves as a nutrient reservoir and provides rich sources of mineral elements for plants. 在水淹系统中,土壤有机质如同一个营养库,为植物的生长提供丰富的矿物质成分。
