soil drainage

The system have 11 indicators, including the organic matter, phosphorus, potassium, zinc and effective, texture, pH, profile configuration, landform type, soil parent materials, guaranteed rate of irrigation and drainage capacity.

研究建立了荆州市耕地地力评价指标体系，选取了有机质、有效磷、速效钾、有效锌、质地、pH、剖面构型、地貌类型、成土母质、灌溉保证率和排涝能力11项指标。

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Plant and soil samples collected from the Yangtze River ( Changjiang) drainage basin were analyzed for carbon content, stable carbon isotopes and lignin phenol content to investigate the characteristics of terrigenous organic matter.

为探讨长江流域中植物和土壤的木质素特征，应用碱性氧化铜分解-气相色谱检测法对长江流域的典型植物和土壤样品中的木质素进行了测定分析。

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It is advisable to mix coarse grit into heavy soil to improve drainage.

建议将粗砂掺到黏重的土壤里，以提高排水性能。

《柯林斯高阶英汉双解学习词典》

A granite based soil region is distributed widely in the drainage area of Dongting Lake.

花岗岩母质土壤区在洞庭湖流域广泛分布.

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Space and time change on water-salt movement in saline-alkali soil without drainage was studied and analyzed.

研究分析了榆林沙区无排灌条件 盐碱地 水盐运动的时空变化,其水盐运行主要是随着季节、地形等因素的变化而变化.

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Dividing out four drainage basins, and on the basis of the achievement of three water changes, applying runoff coefficient formula from ShanDong water conservancy's academy and USLE, respectively counting and assessment in average surface runoff average supply to groundwater and average soil erosion;

划分出四个小流域，根据三水转化研究成果，采用山东省水科院变径流系数经验公式法和美国通用水土流失方程，分别对该地多年平均地表径流、地下水补给和水土流失进行计算评价；

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Study for the Control of Stability and Settlement in Construction of Soft Soil Road Bank Treated with Surcharge Preloading and Vertical Drainage Wells

排水体堆载预压法处理软土路基施工中的稳定和沉降控制研究

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A dark meadow soil rich in organic material; developed through poor drainage in humid grassy or sedge regions.

黑色的草地土壤，富含有机物，在潮湿的草地或莎草地因排水不好而形成。

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With fecund and loose with the arenaceous qualitative soil with good drainage had better.

以肥沃疏松和排水良好的砂质土壤为好.

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The main function of vibration crushed gravel is to squeeze soil, eliminate earthquake liquid and debase liquid grade, it also enhance the property of soil drainage, spread consolidation, improve compressibility and shear strengh.

振动挤密碎石桩在组合型复合地基中主要作用是对土体进行挤密，消除地震液化或降低液化，增加排水性能，加速土体固结，改善土的压缩性和抗剪强度。

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Should be the most acidic, humus-rich and good drainage area of growth, micro-alkali soil can be.

最宜在酸性 、 富含腐殖质而排水良好的地域生长, 微碱土也可.

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