1　选择优良品系　石硖龙眼有3个品系,即黄壳石硖、青壳石硖和白壳石硖。其中以黄壳石硖果实最大,品质最好,而青壳石硖的果实最小,品质最差。对以往栽植的青壳石硖,于春季进行高接换头,改接优质的大果黄壳石硖。2　选择适宜区域种植　石硖龙眼在年均温21～22℃地区种植都较理想 1 Select the best strains Shijian longan has 3 strains, namely yellow shell stone 硖, green shell stone 硖 and white shell stone 硖. Among them, the largest fruit of the yellow-huang stonefruit, the best quality, and the lowest fruit of the hull-huang stone, the worst quality. On the past planted green shell stone 硖, high pick in the spring, change the high-quality large yellow shell 硖. 2 Select the appropriate area for planting Shijie longan in the annual average temperature of 21 ~ 22 ℃ planting more ideal