以分辨率為1 m的10 m×20 m和10 m×10 m觀測網為研究對象，運用自制雨量杯開展自然降雨測試試驗，結合克里斯琴森均勻系數、分布均勻系數、降雨偏差系數、降雨極值比系數、單因素方差分析等數學方法對自然降雨的空間均勻性進行了研究，分析了風、降雨量對空間均勻性的影響，并討論了降雨測量儀器在動態比對試驗中儀器的架設間隔問題。結果表明：觀測場內自然降雨的空間均勻性良好，且各項均勻性指標具有較好的一致性；風對該觀測場內的降雨空間均勻性影響不大，而降雨量的差異對其空間均勻性有一定的影響；在動態比對試驗中，降雨測量儀器的架設間隔應小于5 m，且部分小型降雨測量儀器（如收集杯）架設間隔取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.