SOME CHARACTERISTICS OF WET DAYS DISTRIBUTIONS AND THEIR EFFECTS ON THE YIELD OF MAIZE IN THE MOUNTAINOUS REGION OF EAST LIAONING PROVINCE

In this paper, some characteristics of the wet days distributions and their effects on the yield of maize during 1956-1975 were investigated, for counties Huanren, Xinbin, Qingyuan and Kuandian. A statistical model which fits sequences of wet days in this region was developed and the relation between the wet-day sequences in the growth period (May-Sep.) and the yield was analysed and the effects of sequences with length equal to or greater than 5 days on yields were found significant using Friedman test.