腐殖质

The intensity of humic acid sorption on kaolinite, gibbsite and quartz is related to the nature and number of adsorption site of the minerals, the electricity and the specific surface.

矿物结合的腐殖质可改变矿物的表面性质，矿物对腐殖酸的吸附强度与矿物的吸附位性质、密度、荷电性及比表面积有关。

Cold zone black glebe is evolved under the conditions of frigid temperature and earth -surface vegetation eroded by years.

充满神奇韵味的寒地黑土，是在寒冷气候条件下，地表植被经过寒来暑往漫长的腐蚀形成腐殖质后演化而成的。

Gley A waterlogged soil lacking in oxyen, in which raw humus accumulates as a result of lack of decomposition by bacteria.

潜育土：是一种氧含量低而水含量很高的土壤，由于缺少分解性细菌而在其内积累了大量的腐殖质。

Results showed that the topsoil structure of the CK treatment was dense with little porosity developed, and the soil microstructure was sandy granular fabric - granular fabric. In these treatments using chemical fertilizers only, the soil particles did not form soil structure with little porosity, and the soil microstructures in the N, NP or NPK treatment were observed as prophyropectic fabric-fine sand agglomerplasmic fabric, much better than the CK treatment. In those treatments receiving farm manure alone or farm manure plus chemical fertilizers, the quantity of groundmass increased obviously. The soil had a loosen structure, higher porosity, enriched animal and plant residua, iron-manganese nodules and humus, and more micro-aggregates developed. The soil microstructure of the MNPK treatment was pectized-compacted takyric fabric-intertextic fabric, the best microstructure observed among all the treatments.

结果表明：长期不施肥料的CK处理，土壤耕层结构致密，很少有孔隙发育，土壤微结构为结构较差的碎屑聚积状-沙粒聚积状；长期单施化学肥料，土壤颗粒未形成结构体，少孔隙，土壤微结构主要为斑晶胶凝状－细沙粒聚积状结构，土壤结构比CK处理优；长期施用有机肥或有机无机肥料配施的处理，土壤粗颗粒数量显著增加，结构疏松，孔隙量大，动、植物残体丰富，有铁锰结核和腐殖质的形成和微团聚体的发育，土壤微结构类型以MNPK处理最好，为胶凝紧实状－多孔状结构。

The content of methyl functional group of humus is an important index to evaluate the humification of soil.

胡敏酸甲氧基功能团的含量多寡是衡量土壤腐殖质化的重要指标。

The final process in organic matter decomposition is known as humification.

有机物分解的最后程序称为腐殖质化。

Therefore, the aim of these treatments is to provide a mature, stabilized organic material in which the humification process,Which typically occurs under natural soil conditions, has started and has reached an adequate degree with the production of "real" humic substances.

因此，这些处理的目的就是要提供一个成熟的稳定的有机物质，在其中腐殖化作用（自然土壤条件下的典型现象）已经发生而且已经达到一个足够的程度，能产生真正的腐殖质。

A long-term combinition of organic manure with chemical fertilizers could improve the humification of soil humus, enhance the activity of humus, reduce the antioxidization ability of soil organic carbon, and increase the nutrient-supplying capacity, so was the best fertilization model for maintaining the soil fertility.

长期有机肥与化肥配施，对改善土壤腐殖质的腐殖化程度和提高其活性，降低土壤有机碳的抗氧化能力，提高土壤养分供应能力具有良好的作用，是保持土壤肥力的最优施肥方式。

Compared to routine inoculation method, total organic carbon, dissolved organic matter of TSCT decrease by 6.37%, 6.57%; and humic substance, humic acid, and humification index of TSCT increase by 8.61%, 16.75%, 18.40% at 336 hours of composting, respectively.

结果表明，在堆肥336 h，与普通接种法比较，三阶段温度控制接种法堆肥总有机碳、水溶性有机碳含量依次降低6.37%、6.57%；而腐殖质、胡敏酸、腐殖化指数分别增加了8.61%、16.75%、18.40%。

If you do not know what Humus is, join the club.

如果您不知道什么是腐殖质，加入这个俱乐部。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。