CAJ | 학술논문

通过室内一维土柱淋滤实验，选择氯氰菊酯为淋滤液，研究其在不同介质中的穿透行为，探讨不同介质自身特性对氯氰菊酯纵向弥散行为的影响。实验依据自然降雨强度确定喷淋强度，通过改变充填介质的种类比较氯氰菊酯与氯离子在不同介质中的穿透曲线的差异。结果表明：以乳油形式广泛应用于田间的氯氰菊酯在土柱内的穿透曲线与氯离子十分接近，即氯氰菊酯在水中的迁移性能良好，对地下水有一定威胁。土壤有机质含量会引起弥散系数的降低，实验选择的2种喷淋强度对氯氰菊酯的弥散系数影响不大。
통과실내일유토주림려실험，선택록청국지위림려액，연구기재불동개질중적천투행위，탐토불동개질자신특성대록청국지종향미산행위적영향。실험의거자연강우강도학정분림강도，통과개변충전개질적충류비교록청국지여록리자재불동개질중적천투곡선적차이。결과표명：이유유형식엄범응용우전간적록청국지재토주내적천투곡선여록리자십분접근，즉록청국지재수중적천이성능량호，대지하수유일정위협。토양유궤질함량회인기미산계수적강저，실험선택적2충분림강도대록청국지적미산계수영향불대。
In this paper,engaged the soil column and chose Cypermethrin as tracer,the breakthrough behavior of tracer in different porous media was studied.,and discussed the influence of the longitudinal dispersion coeffi-cient of Cypermethrin by the characteristics of the porous medias. Leaching experiments simulated natural rainfall intensity as leaching intensity,compared breakthrough curves of Cypermethrin and chloride ion by changing the filled medium. The results showed that the breakthrough curves of Cypermethrin and chloride ion were very close,which meant the Cypermethrin had higher transport properties in water and had a certain threat to pollute groundwater. The content of soil organic matter was higher,the diffusion coefficient was lower. The leaching inten-sity which chose by the experiment had little effect on the diffusion coefficient of Cypermethrin.