关键词: 华北, 干物质分配系数, 夏玉米, 干旱胁迫

Abstract: Rattan-like bamboos are quite unique, which have scrambling-like stems and rattan-like shapes. In this study, the distribution characteristics of basal diameter and internode length of naturally distributedDinochloa orenudain Ganshenling, Hainan Island were analyzed using Kolmogorov-Smirnov algorithm, and its biological and ecological characteristics were further revealed. The results showed that the basal diameter ofD. orenudain Ganshenling, Hainan Island ranged 11.92-47.60 mm, and the distribution of basal diameter obeyed normal distribution, log-normal distribution and gamma distribution. The theoretical value of normal distribution was the most similar to the original value, followed by gamma distribution and log-normal distribution. The internode length ofD. orenuda ranged 23.33-43.33 cm. Its distribution obeyed normal distribution, Weibull distribution and gamma distribution. The theoretical value of normal distribution was the most similar to the original value, followed by Weibull distribution and gamma distribution. The basal diameter’s distribution ofD. orenuda in Ganshenling, Hainan Island was rational, and internode length ofD. orenudawas similar toAmpelocalamus saxatilis in Sichuan and Weixin of Yunnan.D. orenudacan be exploited as garden bamboo or bamboo corridor by molding, it can also be greening bamboo in mountainous regions.

Key words: North China., drought stress, summer maize, dry matter partitioning coefficient