• 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.

    一旦腐殖质消失养分无法土壤回收过滤,致使土壤肥沃变为贫瘠,适于热带草原植被的生长。

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  • 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.

    根据腐殖质矿物质土壤结合程度、分解作用所含的有机物类型以及原有植被,腐殖质区分为几个类型。

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  • 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.

    间作常规农作物生长期内种植农作物,比如冬麦三叶草预防土壤侵蚀能提供腐殖质

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  • Earthworms consume large amounts of soil, and produce a rich humus, perfect in texture.

    蚯蚓吃下大量土壤,排出肥力丰富、物理结构理想的腐殖质

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  • The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose.

    缺少腐殖质过度淋滤使这种土壤农业几乎无用

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  • Deep mixing method for soft soil is ineffective while humus content is above a certain value, thus additives should be mixed into cemented soil to eliminate the influence.

    深层搅拌加固含有腐殖酸失去了效用,需要添加促进剂消除腐殖酸影响

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  • A crop, such as winter rye or clover, planted between periods of regular crop production to prevent soil erosion and provide humus or nitrogen.

    常规农作物生长期内种植农作物,比如冬麦三叶草预防土壤侵蚀能提供腐殖质

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  • Loose, friable soil, rich in humus and fit for planting.

    疏松易碎土壤富含腐殖质适宜种植

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  • The paper points out that the factors which influence the bark quantity are soil quality, the position and the shape of the slope, the depth of humus soil, and the content of organic matter.

    影响黑荆树皮主导立地因子土壤质地黑土层厚度、坡、土壤有机质含量

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  • 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.

    这种堆肥化过程中,有机物由不稳定状态转化稳定腐殖质物质用作肥料改良土壤。

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

    通过黑钙土培养试验,研究不同作物土壤土壤腐殖质影响

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  • 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.

    由于土壤性质腐殖质含量不同,土壤的含水量不能很好说明是否适宜植物的生长

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

    胡敏酸甲氧基功能含量多寡衡量土壤腐殖质化的重要指标

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  • 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.

    苹果园覆盖麦草,研究其土壤腐殖质组成微生物区系土壤活性变化的影响。

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  • The variation of composition and nature of every soil type humus vertical distribution is obvious.

    腐殖质组成性质垂直变化明显

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  • 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.

    结果表明长期施肥不仅影响土壤腐殖质含量组成影响腐殖质的理化性质

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  • There are few studies on the effect of crop root systems on the composition, particularly on the heavy fraction of soil humus.

    本文黑钙土、黑土中各种作物茬留茬与否对土壤腐殖质、土壤重组有机质组成、结合形态及某些光学性质进行了测定。

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  • The soil under the humus is not dark. This lighter soil is rather like sand; it is made of bits of rock.

    腐殖土下面土壤不是黑色的,这种浅色的土壤沙子碎石变成

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  • The major factors of the soil developed from arenite were soil-layer depth, non-capillary porosity and humus depth.

    砂岩发育土壤主导因子土层厚度非毛管孔隙度腐殖质层厚度。

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  • Humus: Nonliving, finely divided organic matter in soil, derived from microbial decomposition of plant and animal substances.

    腐殖质土壤无生命的、细小有机物质

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  • There is a relationship on soil polyphenol oxidase betweenforming of soil organic matter and medium of forming humus.

    土壤多酚氧化酶土壤有机质形成有关,殖化一种媒介

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  • For soil trace element, the ageing humus had fixed effect. The nascent active humus had effect to promote the activity.

    土壤微量元素老化腐殖质固定作用新生活性腐殖质有促进活性作用。

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  • 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%.

    有机培肥试验大于土壤腐殖质4%有机质增量表现产量效应。

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  • Land reclamation technology includes surface humus soil stripping and piling, blocks the dregs dam. retaining dam, flood drainage guide, land leveling and backfilling of soil humus.

    土地复垦技术措施包括表层腐殖质剥离堆放、拦土坝导洪排水、土地平整与腐殖质土回填等;

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  • It would be important to increase soil humus content to alleviate the pollution and enhance the soil self-purification.

    提高土壤腐殖质含量减轻污染危害增强土壤自能力的重要措施。

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  • The results indicated that humus application inhibited soil Hg to shift to the plants, Hg fixation rate by the humus being over 90%.

    结果表明腐殖酸施用可抑制土壤植株迁移,对土壤汞的最大固定超过90 % ;

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  • Humus layer in different forest types and soil surface type and quantity of soil fungal communities have a significant difference.

    不同林型腐殖质土壤表层土壤真菌群落种类数量存在显著差异。

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  • The soil under the humus is not dark. This lighter soil is rather like sand; it is made of bit of rock.

    殖上下面的土壤并不这种浅色土壤沙子碎石变成

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  • The soil under the humus is not dark. This lighter soil is rather like sand; it is made of bit of rock.

    殖上下面的土壤并不这种浅色土壤沙子碎石变成

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