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应用游程理论分析了日光温室连阴天危害发生的规律。对游程理论的模拟方法应用于日照时数序列表示的连阴天游程特征模拟的可行性进行了检验，发现；①冬季连阴天发生次数和连阴天长度期望值理论模拟结果与实际结果拟合良好，连阴天期间内日照时数缺乏量期望值须在理论模拟上加以修正；②连阴天长度的概率分布符合D．M．Hershfitld的几何分布。以河南省为例给出了连阴天长度的概率分布和各游程特征量的地域分布规律；确定了河南省日光温室发展的最佳地带；并在此基础上提出了生产建议。
Based on the theory of run-length, the law of harmfulness of cloudy day in sunlight greenhouse was analyzed. The feasibility of applying the run-of-the-loop simulation theory to the continuous cloudy daytime traveltime feature representation of sunshine time series was tested. The results showed that: ①the theoretical results of winter even cloudy days and even cloudy day expectation were fitted with the actual results Good, even the cloudy period of sunshine hours the amount of the lack of expectations to be revised in the theoretical simulation; ② with the probability distribution of cloudy days in line with D. M. Hershfitld’s geometric distribution. Taking Henan Province as an example, the probability distribution of even cloudy days and the regional distribution of each runoff feature quantity are given. The best zone for the development of solar greenhouse in Henan Province is determined. Based on this, the production suggestions are put forward.