Clustering analysis is a new, reasonable and effective method in soil study.
聚类分析方法是土壤研究中的一种合理有效的新方法。
It is precise for unsaturated soil study to use suction as parameter, however, that brings much difficulty.
考虑吸力的非饱和土研究较为精确，但吸力量测起来比较困难。
In recent years, the agricultural soil study of the Loess Plateau is mainly focused on long-term fertilization effects on soil moisture, soil fertility, and crop yield.
近年来人们对黄土高原地区农业土壤的研究主要集中在长期施肥对土壤中含水量、土壤肥力、农作物产量等的影响。
In recent years, the agricultural soil study of the Loess Plateau is mainly focused on long-term fertilization effects on soil moisture, soil fertility, and crop yield.
近年来人们对黄土高原地区农业土壤的研究主要集中在长期施肥对土壤中含水量、土壤肥力、农作物产量等的影响。
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