重金属在土壤剖面分布没有规律性；
The heavy metals were irregularly distributed in soil profiles.
不同耕作处理能影响土壤水分剖面分布。
Tillage treatments affect soil water distribution in soil profile.
施用氮肥可明显增加土壤硝态氮残留数量，并影响其剖面分布；
Application of N fertilizer significantly increased the amount of residual nitrate-N, and affected its distribution in the soil profile.
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