The optimal environmental conditions were obtained by an orthogonal design of L 16 (4 5), the optimal indices were 1 degree Celsius ,100% ,16% and 18% for temperature, relative humidity, O 2 concentration and CO 2 concentration ,respectively.

• L16 (45)正交试验优化得出最佳环境条件为 :温度 1℃、相对湿度 10 0%25、O2 浓度 16%25、CO2 浓度18%25。