土壤溶液soil solution 土壤中的液相部分，其中溶有多种无机和有机的化合物。它们的组成和性质，受土壤母质、气候、地形和生物的制约而经常变化，反过来又影响土壤形成、发育和植物生长。土壤溶液中的物质，有的可在不同程度上降低溶液的表面张力而产生正吸附，有的又可能增加溶液的表面张力而产生负吸附。因此，离土粒表面不同距离部位的土壤溶液，其组成和浓度均有差别，从而为根毛提供可选择的液相部位。浓度过稀，植物不能得到充分的营养；浓度过大，会阻碍植物吸水；其中含有较多有害盐类时，能引起土壤盐渍化。
Soil solution samples were obtained by centrifuging fresh soil samples. Results show that the concentration of DOC in soil solution was significantly increased at the initial stage of flooding and then decreased gradually regardless of straw incorporation.
结果表明,淹水后土壤溶液中DOC浓度在淹水初期明显增加,而后逐渐下降。
参考来源 - 秸秆还田对稻田土壤溶液中溶解性有机质的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
土壤中对植物有用的矿物质元素必须先溶解在土壤溶液中，然后才能被根吸收。
The mineral elements from the soil that are usable by the plant must be dissolved in the soil solution before they can be taken into the root.
本文用实测资料分析了温度对麦田土壤溶液养分浓度的影响。
Study was conducted to undersdand the effects of temperature on the nutrient concentrations in soil solution.
而土壤电导率是以数字形式表示土壤溶液的导电能力，反映了土壤的水盐状况。
Soil conductivity represents the conductive capability of soil solution in digital form, reflecting the state of water and salt in the soil.
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