loess hilly region nte 黄土丘陵区
Semiarid loess hilly region 半干旱黄土丘陵区
the middle loess hilly region 黄土丘陵区
southern Ningxia loess hilly region 宁南黄土丘陵区
Hilly loess region 黄土丘陵区
Loess hilly and gully region 黄土丘陵区
Loess Plateau hilly region 黄土丘陵区
loess hilly-gullied region 黄土沟谷系统
Method Orchard at different years in loess hilly region was chosen as the subject to reveal changes in soil quality through experimental analysis and statistical method,and the slope cropland was used as reference.
方法采用时空互代法,以黄土丘陵区不同年限的塌地果园为研究对象,选取坡耕地为对照,通过室内测试分析,并运用统计和相关分析等方法,研究土壤质量的变化过程。
参考来源 - 黄土丘陵区营造果园后土壤质量效应分析·2,447,543篇论文数据，部分数据来源于NoteExpress
Is located in loess hilly region, serious soil erosion.
地处黄土丘陵区，水土流失严重。
It is necessery that the total consumptive use of water in the rotation period is equal to the total effective precipitation(pre- cipitation minus runoff depth)in the loess hilly region.
在黄土丘陵区要求林草与农作物地在轮作周期内的总耗水量与有效雨量（降雨量与径流深之差）持平。
In loess hilly gully region covered by sheet sand, soil water erosion process is different from typical loess hilly gully region because of worse natural environment and loose land surface material.
在片沙覆盖的黄土丘陵区，由于恶劣的自然环境及松散的地表组成物质，土壤的水蚀过程明显地不同于典型的黄土丘陵区。
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