1.种植地的选择无公害龙眼生产基地应选择在周围无污染源,土壤未受污染,且地下水位较低,水源丰富,清洁,排灌条件好,空气清新,土壤深厚肥沃,阳光充足的开阔地。2.品种选择与改良(1)新开发园。应选择适合本地区栽培的纯正优良的品种,面积在225亩以上的,品种应早、中、晚熟搭配,进 1. The choice of cultivation of non-polluting Longan production base should be selected around the non-polluting sources, the soil is not polluted, and the lower the groundwater level, abundant water, clean, good irrigation and drainage conditions, fresh air, deep soil fertile, sunny open. 2. Variety selection and improvement (1) New Development Park. Should choose suitable for the cultivation of pure and excellent varieties in the region, an area of ​​more than 225 acres, the species should be early, middle and late maturing with