腐殖质

Blood lily is planted just below the ground in well-drained, humus-rich soil and prefers to be left undisturbed for many years.

血百合种植下方是在良好的排水，腐殖质丰富的土壤和喜欢理由以左原状多年。

The production of by-products caused the productivity of levulinic acid lower than theoretical one. Based on the study of the degradation of glucose and the formation of 5-hydromethylfurfural and levulinic acid, a kinetic model was proposed, in which, the process was described by a series first-order reactions with parallel by-reaction.

在葡萄糖降解的初始阶段还存在着异构化和可逆反应，降解过程中形成了羟甲基糠醛、腐殖质、乙酰丙酸、甲酸和其它中间产物。

The two reservoirs are the main sources of drinking water in Guiyang. The source of water comes from some streams in drainage area.

分子量变化的程度可以进一步理解DOM的自然形成过程，也可以在引用水处理过程中优化腐殖质的去除过程。

The influences of environmental factors on the abiotic methylation were studied. The biggest production of methylmercury was found after 2 days of incubation in presence of FA. The rate of production of methylmercury depends upon temperature. In presence of FA from sediment, the biggest production of methylmercury was found under 40℃. In presence of FA from soil, production rate increases with temperature. The biggest production of methylmercury was found when solution pH was 2 and 4 in presence of FA from sediment and soil, respectively. Increase in concentrations of inorganic mercury and FA solution causes an increase in the production of methylmercury. Under irradiation with ultraviolet ray, blacklight lamp as well as natural light, methylation is stimulated, especial for irradiation of ultraviolet light.

环境条件对汞甲基化作用的影响研究得出，在底泥和土壤FA体系中甲基汞产量均在反应2天后达到最大值；在底泥FA体系中汞的甲基化在反应温度为40℃时产量最大，而在土壤FA体系中，甲基汞产量在10～60℃之间随反应温度升高而增加；底泥和土壤FA体系中汞的甲基化分别在pH值为2和4时最大；甲基汞产量均随无机汞浓度和腐殖质浓度的增加而增加；紫外线、黑光灯和自然光照射都可促进甲基汞的生成，紫外线的作用尤其明显。

Factors effecting the degradation rate, including types of light sources, photooxidation catalyzers and sensitizers, the pH value of water and the component of humus were investigated in the experiment, and the treatment of wastewater containing triazophos using UV-Fenton was also studied in this paper.

为此本文进行了三唑磷在水体中光降解的实验研究，考察了光源、光催化剂及光敏剂、水体pH值、腐殖质成分等因素对三唑磷光降解的影响，并对UV-Fenton处理三唑磷废水进行了研究。

Main contents of the course includes: related conceptions, matter of soil, soil texture, soil organic matter, soil humus, soil structure, soil moisture, soil air, soil acidity and soil alkalinity, soil colloid, cation exchange, soil former soil-forming process, soil classification, distributions and properties of soil great group in China (fores soil, steppe soil, main non-zonal soil, paddy soil, etc), soil erosion, soil contamination, soil utilization, conservation of soil resource, soil investigation, etc.

土壤地理学是地理科学专业的主要基础课程之一，是一门必修课程；要求掌握土壤地理学基本的理论、知识和方法；主要内容有：有关概念、土壤组成物质、土壤质地、土壤有机质、土壤腐殖质、土壤结构、土壤水分、土壤空气、土壤酸碱性、土壤胶体、土壤阳离子交换、土壤形成因素、土壤形成过程、土壤分类、中国主要土壤类型（森林土壤、草原土壤、主要的非地带性土壤、水稻土等）的分布及其性质、土壤侵蚀、土壤污染、土壤资源的利用与保护、土壤调查研究等。

Five paddy soils with totally 20 layers samples were c ollected from the Four Lake Regions at the different gleyed degrees.

在四湖地区采集了不同潜育程度 5个水稻土剖面共 2 0层样品，用傅积平改进法测定了样品的腐殖质组成，分析了松结态和稳结态中胡敏酸和富里酸的含量。

The local factors such as topography, vegetations and soil moisture contents, have great influences on the distribution, ground temperatures, and ground ice contents of permafrost. About 50 km of wetlands have been identified along the China-Russia crude oil pipeline route. In these segments, the surficial deposits consist of peat and humic layers on the top of thick ground-ice, or ice-rich permafrost. The frozen ground engineering geology conditions in wetlands generally are the worst for building and operating the pipeline. The hazardous periglacial processes, such as the widespreadpresence of pingos, icings and frost mounds due to the extensive occurrence of the frost-susceptible soils and ample supplies of surface and ground waters in winter pose significant threats on pipeline operation.

地形地貌单元、植被分布、地表水分条件的变化等局部因素对多年冻土的分布和地下冰的赋存产生重要的影响，管道沿线大约分布有50 km左右的沼泽湿地，其表层为腐殖质土及泥炭层，泥炭层下面分布着含土冰层或地下冰，是管道沿线最差的冻土工程地质地段；由于中俄原油管道沿线水系发育多，冻胀丘、冰椎和冰幔等不良冻土现象广泛分布。

This paper studied the effects of different crop stubbles put in soil on soil humus by cultural experiment of churnozem.

通过黑钙土的培养试验，研究了不同作物根茬施入土壤后对土壤腐殖质的影响。

It usually grows in humus between cracks in sandstone talus of rock screes , either as solitary individuals or in small groups , in light woodland of Afromontane evergreen forests.

奇异君子兰长在遍地石块的山的斜坡上的裂缝中的腐殖质里，它们或者独居，或者群生，这些地方往往有较少的非洲红豆木长绿树林覆盖。

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。