龙眼(Dimocarpus Longan Lcur)是我国亚热带常绿果树,其树体高大,寿命长,经济价值高。泉州市龙眼栽培历史悠久,栽培技术经验丰富,由于老果园面积大,加上以往几年受体制变化的影响,果园失管,导致衰老树不断出现。据初步调查,泉州市衰老树达1800亩,占投产面积的16%,龙眼主产区的登峰村衰老树就有230亩,占该村投产面积18.4%。如何在短期内迅速抢救恢复树势,进行更新复壮,延长经济寿命,提高经济效益,是目前生产上急待解决的主要问题。 Longan (Dimocarpus Longan Lcur) is a subtropical evergreen fruit tree, its tall tree, long life, high economic value. Longan cultivation in Quanzhou has a long history and rich cultivation techniques. Due to the large area of ​​old orchards, coupled with the changes of the institutional system in the past few years, the loss of orchards in the orchard has led to the emergence of aging trees. According to the preliminary investigation, the decaying tree in Quanzhou amounts to 1,800 mu, accounting for 16% of the put into operation. There are 230 mu of decaying trees in Dengfeng Village, the main producing area of ​​longan, accounting for 18.4% of the total area put into operation. How to quickly rescue and restore the vigor of trees in the short term, carry out renewal and rejuvenation, prolong economic life span and increase economic benefits are the major problems to be solved urgently in production.