CAJ | 학술논문

　　以陕西杨凌一级阶地砂壤土和三级阶地粘壤土所选典型田块的双环入渗试验为基础，对不同土壤质地条件下的土壤入渗特性进行了研究。结果表明：两种土壤质地条件下描述其入渗过程的最优入渗公式为修正Kostiakov公式；土壤入渗试验合理的设计观测时间一级阶地砂壤土条件下不应小于90 min ，三级阶地粘壤土条件下不应小于120 min；根据各入渗参数的最大相关距离，计算了典型田块入渗试验的合理测点数，一级阶地砂壤土和三级阶地粘壤土试验田块均为42个测点；可在一定程度上借助稳定入渗率 f0的变异特征描述土壤入渗性能和衡量土壤入渗能力，但同时还应考虑入渗参数 k的空间变异特征。
　　이협서양릉일급계지사양토화삼급계지점양토소선전형전괴적쌍배입삼시험위기출，대불동토양질지조건하적토양입삼특성진행료연구。결과표명：량충토양질지조건하묘술기입삼과정적최우입삼공식위수정Kostiakov공식；토양입삼시험합리적설계관측시간일급계지사양토조건하불응소우90 min ，삼급계지점양토조건하불응소우120 min；근거각입삼삼수적최대상관거리，계산료전형전괴입삼시험적합리측점수，일급계지사양토화삼급계지점양토시험전괴균위42개측점；가재일정정도상차조은정입삼솔 f0적변이특정묘술토양입삼성능화형량토양입삼능력，단동시환응고필입삼삼수 k적공간변이특정。
Based on the double-ring infiltration experiments carried out in the selected fields of the first terrace and the third terrace with sandy loam and clay loam respectively in Yangling District ,Shaanxi Province ,China ,the soil infil-tration characteristics under different soil textures were studied .The results showed that the modified Kostiakov function was the optimal choice in describing the process of soil infiltration .The reasonable observing time of infiltration experi-ment was no less than 90 min in the first terrace with sandy loam and no less than 120 mins in the third terrace with clay loam .Based on the maximum correlation distance among the infiltration parameters ,the reasonable sampling number was proved to be 42 for the selected fields in both the first terrace and the third terrace .The spatial variation characteristics of basic infiltration rate f0 could be employed to describe the infiltration performance and to measure the infiltration ca-pacity of soil ,and the spatial variation characteristics of the infiltration parameter k should also be taken into considera-tion .The study results could set the scientific foundation for a further study of soil infiltration characteristics .