通辽市区域人工移植的桧柏和侧柏大苗，早春季节相继发生生理干旱，主要表现枝叶枯黄，严重者全株枯死。经过多年观察研究，并采取一系列防治措施之后，防治区内保存率达90％以上，收到了明显地防治效果，避免了经济损失和社会影响。 Tongliao city artificial transplanted cypress and Platycladus orientalis seedlings, the early spring have physiological drought, the main performance of the branches and leaves yellow, severe whole plant died. After years of observation and study and a series of prevention and control measures, the preservation rate in the control area reaches more than 90%, which has obviously received the prevention and control effects and avoided economic losses and social impacts.