通过磁输运测量研究了Al0·22Ga0·78N/GaN二维电子气的电子相干散射中的弱局域和反弱局域化现象.在外加弱磁场的情况下,该系统表现出正-负磁阻的变化,说明在Al0·22Ga0·78N/GaN异质结中存在晶体场引起的电子自旋-轨道散射.同时讨论了二维电子气中不同的散射时间对温度的依赖关系,实验得到的非弹性散射时间与温度成反比,表明非弹性散射机理主要来源于小能量转移的电子-电子散射. The weak local and anti-weak localization in the electron-coherent scattering of Al0.22Ga0.78N / GaN two-dimensional electron gas have been studied by magnetic transport measurements. The system exhibits positive-negative magnetic field The change of magnetoresistance indicates that the electron spin-orbit scattering caused by the crystal field exists in the Al0.22Ga0.78N / GaN heterojunction, and the dependence of temperature on different scattering times in two-dimensional electron gas is discussed. The inelastic scattering time is inversely proportional to the temperature, indicating that the inelastic scattering mechanism mainly comes from the electron-electron scattering of small energy transfer.