以採18星期者產量最高，再次為15星期者；即採收期愈長，產量愈高，惟後期小筍較多。
The purpose of this experiment was to study the suitable harvesting period for using by cultivator. results of this experiment indicate that the longer the harvesting period the higher the yield was, but the small size spears appearance would be more in the long harvesting period.
