Replanting, heavy pruning and collar pruning are the main reforming methods for low yield and senescent tea plants.Tea as a perennial crop, it is necessary to evaluate these methods in the long run.

• 摘要改植换种、重修剪和台刈是低产衰老茶园改造最常用的几种方式，茶树作为多年生作物，有必要从较长一个时期来比较各改造方式的优劣。