在广州白云区风尾村选择面积约 3 34ｈｍ2 、10 0年生树龄、树势严重衰退的 4 12株老弱荔枝园进行改造、更新复壮技术试验 ,取得了良好的效果。地下部分更新　根系发达 ,吸收根多 ,才能吸收足够的水分和矿物质营养 ,供植物生长需要。因该荔枝园多年失管 ,未施有机肥料 ,造成土 In the Fengwei Village, Baiyun District, Guangzhou, 42 old and weak litchi orchards with an area of ​​about 3 34hm2, an age of 10 years and a serious decline of tree vigor were selected to be rebuilt, and the rejuvenation technical test was renewed with good results. Underground parts of the updated root system developed to absorb more roots in order to absorb enough water and mineral nutrition for plant growth needs. Due to the litchi Park for many years lost tube, no organic fertilizer, resulting in soil