利用统计数值模拟方法， 通过对各种试验统计方案的功效、准确度和灵敏度的分析， 选择适宜的统计方案、确定试验周期和选择影响效果评价各种因子的最佳值。为人工降水方案统计设计提供可靠的科学依据。分析表明： 在各种随机化试验中， 区域随机交叉试验的功效、准确度和灵敏度高于其他随机化试验； 多因子分层回归分析方案是一种功效、准确度和灵敏度均较高的非随机化试验方案。 Through the statistical numerical simulation method, through the analysis of the efficacy, accuracy and sensitivity of various experimental statistical schemes, the appropriate statistical scheme is selected to determine the optimal value of various factors for the test cycle and the selection of the impact evaluation. Provide a reliable scientific basis for the statistical design of artificial precipitation scheme. The analysis shows that in randomized trials, the efficacy, accuracy and sensitivity of regional randomized crossover test are higher than those of other randomized trials. Multi-factor stratified regression analysis is a kind of non-discriminative, high-accuracy and high-sensitivity Randomized protocol.