中文摘要：

采用地面降水资料、多普勒雷达数据、探空资料等，利用自主开发的系统软件对实测资料进行增雨效果统计检验，通过目标区作业前后雷达参量的演变或目标区与对比区的回波参量的差异，来完整的分析2010年8月11日海南西部多点作业情况的催化效果。物理统计分析结果显示，催化一般在作业后半小时内起到效果并达到最强，目标区的最大强度、强回波区面积、液态水含量、回波顶高的增大率大于对比区的值，催化作业确实延长了目标云的寿命。

英文摘要：

Based on the precipitation data, Doppler radar data and sounding figures, the paper statistically tests the effect of artificial precipitation enhancement by using a self-developed effect-evaluating software system. By comparing the differences of Doppler radar echo characteristics between the target clouds and the contrast clouds, the effect of rain enhancement is studied by evaluating the multi-point operations in the west part of Hainan Province on August 11,2010. The results show that the effect of seeding starts in half an hour after seeding in the target area and reaches the peak. Compared with the contrast clouds, the increase rates are larger for such parameters as the maximum echo intensity, the stronger echo area, echo tops and the values of the vertically integrated liquid water content of the target cloud. The results also indicate that the seedin~ operations indeed extend the life of the target clouds.