我县白沙岗园艺场有百年以上的老梨树130株,品种为水梨、楚白香、黄金坠等。树势袁弱,通透不良,病虫严重,产量低,质量差。更新前最高年产只3.2万斤,平均株产仅246斤。自1964年开始,该场职工对这些梨树进行更新复壮,经过十二年,老梨树“返老还童”,现在是枝多叶茂,果大质优,平均年产7.9万斤,株产607斤,最高株产1,542斤。 Baishagang horticultural field in our county has more than 100 years old pear tree 130 varieties pear, Chu Baixiang, gold and other pendant. Tree weak potential, poor penetration, pests serious, low yield, poor quality. Before the update with a maximum annual output of only 32,000 pounds, the average strain of only 246 pounds. Since 1964, the workers have renewed and rejuvenated these pear trees. After 12 years, the old pear tree is “rejuvenated” and now it has branches and leafy trees with an annual output of 79,000 kg and an average yield of 607 kg , The highest strain of 1,542 catties.