absolute age of soil [土壤] 土壤绝对年龄
relative age of soil [土壤] 土壤相对年龄
soil true age 又称土壤真实年龄
early age cement-soil 早龄期水泥土
developing age of red soil 山原红壤发育年龄
N green fodder, esp when freshly cut and fed to livestock in a confined area 青刈饲料
Its impact on the latest from the glacier, soil age short.
它脱离冰川影响最晚，成土年龄短。
SummaryResults available showed that soil age did no significant effect on the distribution of the forms of soil organic nitrogen.
现有的材料说明，土壤年龄对土壤的氮素形态分布没有明显的影响。
Soil age and the distribution of buried ancient paddy at Chuodun site in Yangtze River Delta were determined using 14C dating and other archeological methods.
方法以绰墩遗址埋藏的古稻田土壤为研究对象，根据14C和考古学方法确定了土壤成土年龄和分布；
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