cumulative profile
... cumulative production-time relationship 累积产量-时间关联 cumulative profile 累积剖面 cumulative property curve 累积特征曲线 ...
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·2,447,543篇论文数据，部分数据来源于NoteExpress
结果表明：随着氮肥用量的提高，土壤剖面硝态氮累积量明显增加，其向土壤下层淋溶的程度也越严重；
The results show the amounts of NO3-N accumulation in the soil profiles and their extents to leach into the deeper soil layers are increased significantly as the nitrogen fertilizer usage increased.
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