一旦腐殖质层消失，养分就无法从土壤中回收和过滤，致使土壤由肥沃变为贫瘠，只适于热带草原植被的生长。
Once the humus layer disappears, nutrients cannot be recycled and leach from the soil, converting soil from fertile to infertile and making it suitable only for savanna vegetation.
间作在常规农作物生长间期内种植的农作物，比如冬麦或三叶草，以预防土壤侵蚀并能提供腐殖质和氮。
Cover crop: a crop such as winter rye or clover planted between periods of regular crop production to prevent soil erosion and provide humus or nitrogen.
蚯蚓吃下大量土壤，排出肥力丰富、物理结构理想的腐殖质。
Earthworms consume large amounts of soil, and produce a rich humus, perfect in texture.
缺少腐殖质和过度淋滤使这种土壤对农业几乎无用。
The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose.
根据腐殖质与矿物质土壤的结合程度、分解作用中所含的有机物类型以及原有的植被，腐殖质可区分为几个类型。
Humus is classified according to how well it is incorporated into the mineral soil, the types of organisms involved in its decomposition, and the vegetation from which it is derived.
在常规农作物生长间期内种植的农作物，比如冬麦或三叶草，以预防土壤侵蚀并能提供腐殖质和氮。
A crop, such as winter rye or clover, planted between periods of regular crop production to prevent soil erosion and provide humus or nitrogen.
疏松，易碎的土壤，富含腐殖质并适宜种植。
土壤腐殖质层可被定义为在草皮与土壤表面之间的一层有机残留物。
Thatch can be described as the layer of organic residue located immediately between the sward and the soil surface.
在这种堆肥化过程中，有机物由不稳定状态转化为稳定的腐殖质物质，用作肥料和改良土壤。
During the process the organic materials will be turned to the stable humus, which can be used as fertilizer and amend for the plant soil.
砂岩发育的土壤主导因子是土层厚度、非毛管孔隙度和腐殖质层厚度。
The major factors of the soil developed from arenite were soil-layer depth, non-capillary porosity and humus depth.
有机培肥试验中，大于土壤腐殖质4%的有机质增量，不表现产量效应。
It was also showed in a soil organic amendment experiment that there was no response to increment of organic matter when soil contained humus more than 4%.
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。
Blood lily is planted just below the ground in well-drained, humus-rich soil and prefers to be left undisturbed for many years.
本文在腐殖质组成研究基础上，提出了HM组成概念和研究方法，并比较了不同类型土壤腐殖质组成、HM组成及光学性质。
This paper presented the conception and studying methods of HM, and compared the composition and optical property of Humus and HM in different soils.
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 content of methyl functional group of humus is an important index to evaluate the humification of soil.
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。
This paper studied the effects of different crop stubbles put in soil on soil humus by cultural experiment of churnozem.
腐殖质：土壤中无生命的、细小的有机物质。
Humus: Nonliving, finely divided organic matter in soil, derived from microbial decomposition of plant and animal substances.
由于土壤性质和腐殖质含量的不同，土壤的含水量并不能很好地说明是否适宜植物的生长。
Because of the distinction of soil property and humus content, soil water content is not ideal to indicate whether it is suitable to the growth of plant.
结果表明，长期施肥不仅影响土壤腐殖质的含量与组成，还影响腐殖质的理化性质。
The results showed that long term fertilization affected not only the content and composition of soil humus, but also the physicochemical property of the soil humus.
对土壤腐殖质的分析化学研究进展进行了综述。
This paper reviews on the recent research progress of soil humic substances in analytical chemistry.
在杏园和苹果园覆盖麦草，研究其对土壤腐殖质组成、微生物区系及土壤酶活性变化的影响。
The experiment was carried out to evaluate effects of covering wheat straw in apple orchard and apricot orchard on soil humus composition, microflora and soil enzyme activities.
研究了川中丘陵区紫色水稻土土壤腐殖质碳的剖面分布及其组成特征，探讨了土壤腐殖质与活性有机碳、土壤全氮含量的关系。
The paper studied the distribution of humus carbon in soils sections and the characteristics of humus carbon fraction of purple paddy in Mid-Sichuan Hilly Region.
同时，对土壤腐殖质的研究中有待进一步用分析化学方法解决的几个问题进行了探讨。
At the same time, some projects for soil humic substances are discussed which may be solved by the methods of analytical chemistry in th…
本文对黑钙土、黑土中各种作物根茬留茬与否对土壤腐殖质、土壤重组有机质的组成、结合形态及某些光学性质进行了测定。
There are few studies on the effect of crop root systems on the composition, particularly on the heavy fraction of soil humus.
同时，土壤腐殖质含量与纤维素酶活性、纤维素酶活性与过氧化氢酶活性间有很好的相关性。
Further-more, there are well correlations between the content of humus and cellulase activity, between cellulase and hydrogen peroxidase activity.
几种非腐解有机物料施于苏打草甸水稻土后，对土壤中不同结合形态的腐殖质的动态变化进行了研究。
The combined states of soil humic substances were studied after undecomposed organic materials were applied into sodic meadow paddy soil.
可见，土壤是石粒和曾经是活体的物质的混合物。表土中这种曾是活体的东西叫做“腐殖质”。
SO the topSOil is bits of rock mixed with things that are once alive. These things in the topSOil that were once alive are called humus.
铁线莲若生长在深的、富含腐殖质的土壤中，会生成得更好，并且对枯萎病有最大的抗性。
Clematis will grow best and be the most resistant to wilt if it is grown in deep, humus-rich soil.
铁线莲若生长在深的、富含腐殖质的土壤中，会生成得更好，并且对枯萎病有最大的抗性。
Clematis will grow best and be the most resistant to wilt if it is grown in deep, humus-rich soil.
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