中文摘要：

在江西赣州选取20年脐橙园和10年脐橙园开展土壤抗侵蚀性能比较研究,测定其土壤抗冲性、抗蚀性、水稳性团聚体组成及特性、颗粒组成等理化性质.结果表明20年脐橙园的土壤抗冲指数、水稳性指数、平均重量直径（MWD）、几何平均直径（GMD）、有机质含量均大于10年脐橙园.说明种植时间较长的脐橙园土壤其水稳性团聚体更稳定,有机质含量更高,有助于提高土壤的抗侵蚀性能.

英文摘要：

Soil samples of 20 years and 10 years orchards of navel orange in Ganzhou, Jiangxi province were collected to conduct a comparative study on anti-erosion ability. Soil erosion resistance, corrosion resistance, water stable aggregates and physical and chemi- cal properties, such as particle size distribution were measured. The results showed that soil erosion index, water stability index, mean weight diameter （MWD） , geometric mean diameter （ GMD）, organic matter content of 20 years orchard were higher than 20 years or- chard. The results indicted that older navel orange orchard had a more stable soil water-stable aggregates and higher organic matter con- tent, which was favor to improve soil erosion resistance.