地处黄土丘陵区，水土流失严重。
黄土丘陵区干早年份较常见，春旱尤为严重。
Dry year is relatively common in loess region, particularly spring drought.
并提出黄土丘陵区基于水分平衡的草地建设策略。
The strategy for pasture establishment based on soil moisture balance was also presented.
黄土丘陵区旱坡地枣树密植园施肥试验表明，施肥3次效果最好。
Test of fertilizer-applying in arid hillside jujube close planting garden shows that the effect of 3 times fertilizer applying is the best.
黄土丘陵区的沟沿线，是反映该区地形地貌特征的重要的地形结构线。
The thalweg in loess hill area is an important terrain structural line, reflecting topography and landform character.
通过定位试验，对宁南黄土丘陵区几种轮作方式的农田水分平衡进行了研究。
The location experiments have been carried out to study soil moisture balance of farmland under different rotation systems in loess hilly areas of South Ningxia.
风沙是河北省黄土丘陵区较常见的灾害性天气现象之一，多发生于冬春季节。
Wind erosion is one of the most calamity weather phenomenon in loess hilly-gully area of Hebei Province, it often occurs in winter or spring.
秦岭山区地表起伏大，误差较黄土丘陵地区小，最大相对误差为17.8%。
In Qingling mountainous area, errors are relative small and the maximum relative error is 17.8%.
研究结论如下： 沙棘是一个良好的人工林天然化灌木物种，在黄土丘陵区该种群更新良好。
Hippophae rhamnoide is a nicer shrub species for plantation becoming savageness. This population could renew very well in Hilly-gully region of Loess plateau.
文章基于黄土丘陵区油田开发典型流域社会经济调查，探讨了石油开发对当地农村社会经济的影响。
Based on the investigation of rural social economy in typical watershed with oil exploiting in loess hilly-gully region, the effect of oil exploitation on social economy was analyzed.
固原市原州区位于黄土高原西部，属于典型的黄土丘陵区，是国家确定的生态环境建设重点区之一。
Guyuan City County located in the Loess Plateau west, typical of Loess Hills area, is the state for the construction of the ecological environment focused on one area.
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。
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.
根据黄土丘陵区土壤肥力特点及土体结构，选用硝酸铵和过磷酸钙作为试验肥料，进行了不同施肥量试验。
According to soil fertility and soil structure in the loess plateau, the experiment of fertilizer amount was carried out with ammonium nitrate and calcium superphosphate.
利用径流冲刷试验，在不同植被格局的坡面上，对黄土丘陵区坡面不同植被格局的侵蚀产沙规律进行了研究。
According to a runoff scouring experiment on different vegetation patterns of slope faces, the loess hilly gully regions different vegetation patterns are studied.
西部为石灰岩干石山区，中部为黄土丘陵区和台塬区，东部为平原区，海拔高度在731-1716米之间。
West limestone dry stone mountain, central as the Loess Plateau hilly region and the Taiwan area, the eastern plains area, 731-1716 m above sea level in between.
采用计算分形维数的方法，对黄土丘陵区典型草原带土壤团聚体的分形特征及其对植被恢复的响应进行研究。
The characteristics of soil aggregates fractal dimension and its responses to vegetation rehabilitation were studied in the Hilly-gully region of Loess Plateau.
结果表明，全氮、碱解氮和有机质是黄土丘陵区人工林土壤主要的肥力指标，其含量能更好地反映土壤肥力状况。
The results showed that total nitrogen, available nitrogen and organic matter were the main fertility indicators for soil fertility evaluation in the planted forest land on the Loess Plateau.
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。
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.
以1983 ~ 1992年的田间试验结果和室内分析资料为依据，探讨了黄土丘陵区长期施用氮磷肥效应及平衡特征。
The effects and balance properties of long term nitrogen and phosphorous application in loessial hilly regions are explored in this paper based on field experiments and lab analysis from 1983 to 1992.
通过对黄土丘陵区中龄山杨次生林的凋落物及其分解过程，以及蓄积量随时间变化的分析，研究了枯枝落叶层的持水和截留作用及其蓄水减沙效益。
The wilting litter of the middle aged secondary mountain poplar forest and the decomposing process of litter as well as an amount of their accumulation were analysed with changes in time.
通过对黄土丘陵区中龄山杨次生林的凋落物及其分解过程，以及蓄积量随时间变化的分析，研究了枯枝落叶层的持水和截留作用及其蓄水减沙效益。
The wilting litter of the middle aged secondary mountain poplar forest and the decomposing process of litter as well as an amount of their accumulation were analysed with changes in time.
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