| 1. | Pollen sedimentary facies of fluvial sediments on north china plain
华北平原冲积物孢粉沉积相研究 |
| 2. | A study on the ecological groundwater table in the north china plain
华北平原地下水生态环境水位研究 |
| 3. | Spatial and temporal variation of atmospheric nitrogen deposition in north china plain
华北平原大气氮素沉降的时空变异 |
| 4. | Cultivation pattern and development of quality forage in the north china plain
华北平原主要优质牧草的种植模式与产业发展方向 |
| 5. | The number of gas - consuming households has been growing fast in recent years
海淀区平原海拔为50米左右，属于华北平原的一部分。 |
| 6. | Research on evapotranspiration of field ecological system of summer maize in northern plain
华北平原夏玉米农田生态系统蒸散规律研究 |
| 7. | The drought and crop failure were the most serious in north china in a hundred years
那几年，华北平原发生了百年不遇的大旱灾和歉收。 |
| 8. | Regional groundwater pumpage for agriculture responding to precipitation in north china plain
华北平原农田区地下水开采量对降水变化响应 |
| 9. | Study on the planning and designing of eco - agriculture in the typical district of huabei plain area
华北平原典型区生态农业规划与设计研究 |
| 10. | Experimental study on conservation tillage system in areas of two crops a year in north china plain
华北平原一年两熟保护性耕作体系试验研究 |
