Loess Plateau hilly region 黄土丘陵区
hilly region of red earth 红壤丘陵区
purple hilly region 四川紫色丘陵区 ; 紫色丘陵区
hilly region floodproofing [水利] 山丘区防洪
the hilly region 丘陵地区
red hilly region 红壤丘陵区
Soil and water loss is very serious in south red soil hilly region. It is very impendent mission for this region to construct soil and water conservation forest.
南方红壤丘陵区属于十分严重水土流失区，在该地区开展人工水土保持林建设是一项十分迫切的任务。
参考来源 - 红壤丘陵区人工林地生态学特征及其水土保持机理研究Method The relationship between 8 main economical character and yield of 15 hybrid corn sowed in Spring and cultivated in rice field in hilly region of southern Hunan Province were analyzed by correlation analysis and path analysis.
方法以湘南丘陵山区稻田春播的15个杂交玉米品种为材料,采用相关分析和通径分析方法分析了玉米品种8个主要农艺性状与产量的相互关系。
参考来源 - 稻田春播杂交玉米产量与主要农艺性状的相关及通径分析·2,447,543篇论文数据，部分数据来源于NoteExpress
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