... parent soil material 土壤母质 residual parent material 残积母质 sidual parent material 残积母质 ...
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Mountainous area provides rich saccharoid for basin, which is important parent material of oasis soil formation.
山地为盆地提供了丰富的粒状物质，它们是绿洲土壤重要的成土母质；
The result showed that the tested trace elements had different distribution in different parent material profile and soil types. Red parent material had high content of total Zn.
结果表明：红土母质中全锌含量均高于黄土母质，全铜在不同亚类、不同母质黑土中含量分布变异较小；
Under the same parent material condition, urease activity was significantly correlated with forming time and maturity of soil.
在母质相同的情况下，脲酶活性高低又与成土时间的长短和土壤熟化程度呈正相关。
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