...四川紫色丘陵区；坡耕地；地表径流；氮、磷流失系数 中图分类号：S157 文献标识码：A 文章编号：1674-5906（2009）06-2344-05 [gap=11241]key words: purple hilly region; sloping land; Surface runoff; nitrogen and phosphorus loss coefficient ..
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purple soil hilly region 紫色土丘陵区
The paper studied the distribution of humus carbon in soils sections and the characteristics of humus carbon fraction of purple paddy in Mid-Sichuan Hilly Region.
研究了川中丘陵区紫色水稻土土壤腐殖质碳的剖面分布及其组成特征，探讨了土壤腐殖质与活性有机碳、土壤全氮含量的关系。
Based on the data of observation in fixed location, the pilot study on soil moisture dynamic variation law of farmland in purple soil hilly region has been done.
依据定位观测数据，对紫色土丘陵区农用地土壤水分的动态变化规律进行了初步研究。
Soil physicochemical properties under 4 different land utilization types in a purple soil hilly region were analyzed.
依据定位观测数据，对紫色土丘陵区农用地土壤水分的动态变化规律进行了初步研究。
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