Study on the Growth and Development Law of Chimonobambusa utilis in Weixin County

【Objective】In order to explore the bamboo shoot appearance dynamics, growth process of tall and thick bamboo shoots, and the regularity of bamboo shoot formation and degradation. 【Method】The plantation of Chimonobambusa utilis in Dahanzhai, Banjiu Village, Linfeng Town, Weixin County was as the research object, the growth and development laws of Ch. utilis were analyzed based on dynamic location observation data of bamboo shoots and young bamboo growth. 【Result】The results showed that the bamboo shoot period of Ch. utilis in Weixin County lasted for 45 days. It started in mid-September and ended in late October. It can be divided into three stages: initial stage, high stage and late stage. The rate of forming bamboo and returning bamboo shoots were 78.71% and 21.29% respectively. Bamboo shoot-young bamboo had a high growth period of 50 days, showing an S-shaped growth curve of “slow-fast-slow-stop”. The growth period of ground diameter was 30 days, and the growth process followed a “fast-slow-relatively slow-stop” curve. The growth period of young bamboo diameter at breast height lasted 25 days. 【Conclusion】The study results can provide scientific basis for the regulation of bamboo shoot stage, bamboo shoot protection and bamboo cultivation, rational fertilization and directional cultivation.