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本文将1984年采集的10个土样分析资料与1948年在相同地点采集的土样资料作了比较,结果表明,几十年后这些土壤质地变粗、土壤有机质及养分也发生了逆变。
In this paper, the comparison of 10 soil samples collected in 1984 with the soil samples collected at the same site in 1948 shows that after decades, the soil texture became coarse and the soil organic matter and nutrients also reversed.