However, seed dormancy can be broken by a variety of physical treatment such as mechanical, temperature, stratification, hot and dry storage, radiation, ultrasonic waves, magnetic field etc.

• 物理方法包括机械处理、温度处理、低温层积、干藏和干热处理、射线、超声波处理和电场、磁场处理；化学处理包括激素处理、无机化学药剂处理和有机化学药物处理。