坡地土壤降雨入渗试验装置研究

分析了目前土壤入渗试验装置的优缺点，研制了一套适用于野外坡地土壤入渗产流的试验装置，该装置模拟雨强谱宽广，精度较高，重复性好，误差不大于５．５％，试验结果表明：该装置是研究野外坡地土壤入渗产流产沙较好的工具。

Research on Rainfall Penetration Testing Device of Slopeland

In Ejiaohe small watershed, the productivity of grain is low and the total food production is seriously scarce because of the out-of-date mode of production as well as continuous destruction of vegetation and vileecotope resulted from long-term piratical exploitation.Based on the features of small watershed, scientifically configuring manag erial measures,synthetically handling and controlling soil and water loss, and recov ering balance of nature are necessary to improve the external condition of production. Developing high standard parallel terrace to improve the throughput of soil, changing tradi tional cultivation system and controlling the growth of population, and extensively spreading fine breed and cultivation technology of high production are needed to attain the high and stable productivity of grain. All above will provide a good mode to solute the food problem for carst areas.