以下为句子列表：
英文: 20 surface soil samples in Pinus bungeana of Xiaolongshan Tianshui were collected for isolation and genus identification of fungi by dilution-plate method.
中文: 摘要在样地调查的基础上，在小陇山白皮松分布区采集表土土样20个，采用稀释平板计数法对真菌进行了分离，并进一步鉴定到属。
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英文: Bare soil is protected from the impact of rainfall which can cause surface soil crusting, compaction, and erosion.
中文: 塑料薄膜覆盖使裸土免受降雨引起的表土结壳、压实和侵蚀。
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英文: Because no tillage and minimum tillage reduce erosion and concentrate nutrients in the surface soil just below the residue cover, micronutrients generally are less often deficient than under conventional tillage.
中文: 由于少耕和免耕减少了水土流失，同时把养分富集在植物残茬覆盖下的土壤表层，所以，与传统耕作制相比，少耕和免耕一般不易发生微量元素的缺乏。
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英文: Because the construction of water conservancy projects and hydroelectric projects peels off more surface soil and occupies large area, compilation and implementation of soil and water conservation scheme are important measures to prevent soil loss by arti
中文: 水利水电工程建设项目剥离表土多，施工占地面积大，对其进行水土保持方案编制和实施，是防治人为活动造成水土流失的重要措施。
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英文: By statistical analysis,we have established that the baseline of Ni in the surface soil of Guiyang is 7.0 mg/kg and that the soil with Ni content over 7.0 mg/kg may suffer contamination caused by human activities.
中文: 通过对 个样品的分析,得到以下结论:贵阳市表层土壤中镍的基线值为7.0 mg/kg,大于7.0 mg/kg的样品可能遭受人为污染.
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