桂北是我国银杏中心产区之一 ,产量居全国第 2位。目前栽培面积已近 3 33万ｈｍ2 (5 0万亩 ) ,主要集中在兴安、灵川、全州和资源一带。前几年 ,因许多银杏园忽视选用良种苗 ,缺乏整形修剪技术 ,过早过多采叶 ,投产迟、产量低的现象普遍存在。对此 ,桂林市自 1996年开始便在银? Northern Guangxi is one of the producing areas of China’s Ginkgo biloba, ranking second in the country. At present, the cultivated area has reached 33,300 hm2 (500,000 mu), mainly concentrated in Xing’an, Lingchuan, Quanzhou and resources areas. A few years ago, many ginkgo garden ignored the selection of good seedlings, the lack of plastic trimming technology, too much too early to harvest leaves, put into production late, the phenomenon of low output prevalence. In this regard, Guilin has been in the silver since 1996?