以分辨率为1 m的10 m×20 m和10 m×10 m观测网为研究对象，运用自制雨量杯开展自然降雨测试试验，结合克里斯琴森均匀系数、分布均匀系数、降雨偏差系数、降雨极值比系数、单因素方差分析等数学方法对自然降雨的空间均匀性进行了研究，分析了风、降雨量对空间均匀性的影响，并讨论了降雨测量仪器在动态比对试验中仪器的架设间隔问题。结果表明：观测场内自然降雨的空间均匀性良好，且各项均匀性指标具有较好的一致性；风对该观测场内的降雨空间均匀性影响不大，而降雨量的差异对其空间均匀性有一定的影响；在动态比对试验中，降雨测量仪器的架设间隔应小于5 m，且部分小型降雨测量仪器（如收集杯）架设间隔取1 m可行。
In this paper, the spatial uniformity of natural rainfall is studied by using 10 m×20 m and 10 m×10 m observation networks with a resolution of 1 m. A rainfall test is carried out mainly by using selfmade rainfall cups. The applied mathematical methods include Christianson’s uniform coefficient, distribution uniformity coefficient, rainfall deviation coefficient, rainfall extreme ratio coefficient, and oneway ANOVA. At the same time, the problem of setting the interval of rainfall measuring instrument in dynamic comparison experiment is discussed. The results show that the spatial uniformity of natural rainfall in the observation field is good, and the uniformity index has good consistency; the wind has little effect on the spatial uniformity of rainfall in the observation field, but the difference of rainfall has some effect on the spatial uniformity; the installation interval of rainfall measuring instruments should be less than 5 m in the dynamic comparison experiment, and it is feasible for some smallscale rainfall measuring instruments to set up at a interval of 1 m, such as collecting cups.