锯口伤面愈合不良造成枯心,是导致果树树势衰弱,加剧腐烂病蔓延的重要原因之一。尤其是进入盛果期的果树,随着生长势逐年变弱,腐烂病亦日趋严重,而疏除大枝后,锯口伤面愈合不良,必然导致腐烂病沿伤口周围蔓延。1981—1983年,我们先后对太原地区两个国营果树场和3个地方果园的果树锯口伤面愈合情况进行了调查。在调查的1,094个直径在3厘米以上的 Kneading wound surface caused by poor healing, is leading to weak fruit trees, worsening the spread of rotten one of the important reasons. Especially into fruit trees in full fruit, with the growth potential weakened year by year, the decay disease is also increasingly serious, and sparse big branches, kerf wound healing, will inevitably lead to the spread of decay disease around the wound. In 1981-1983, we investigated the wound healing of fruit trees in two state-owned fruit farms and three local orchards in Taiyuan. In the survey of 1,094 more than 3 cm in diameter