蓝莓新品种‘寨选7号’是从美国引进品种‘NC1074’בUS237’的杂交后代实生群体中选育而成的南高丛蓝莓新品种。植株灌木状，半常绿，平均株高166.56 cm，平均冠幅165.78 cm×151.88 cm，适应性强，生长旺盛，丰产性好。花白色，呈“钟状”，花期3月下旬至4月初。果实早熟，果熟期5月下旬至6月中旬；果实呈蓝紫色，表面白粉明显，平均单果质量1.5~1.7 g，大小中等，果实平均横径1.35 cm，平均纵径1.09 cm；果实含可溶性固形物10.5%~13.5%，含酸0.25%~0.40%，口感甜，品质优良。较耐土壤黏重的立地，土壤pH 4.0~6.0条件下生长良好，适宜栽培区域为我国长江流域及以南多数地区。

According to the shrub height, blueberry can be divided into three categories: highbush, half?highbush, and lowbush, while according to the geological origin, blueberry can be divided into southern highbush, and northern highbush.‘Zhaixuan 7’is a new southern highbush cultivar of blueberry, and was selected from blueberry seedlings of highbush hybrid cross ‘NC1074’בUS237’, which were introduced from America. It is a semi?evergreen shrubby tree. The plant grows vigorously and the height is about 166.56 cm, and the average crown width is 165.78 cm×151.88 cm.This cultivar has good yield and strong adaptability. It has white bell?shaped flowers and the flowering period is from late March to early April. The fruit matures early, and the fruiting period is from late May to middle June. The fruit with a lot of white powder on the surface is medium size, the average fruit weight is about 1.5-1.7 g, the transverse diameter of the fruit is about 1.35 cm and the vertical diameter of the fruit is about 1.09 cm. The fruit color is purple blue. The contents of soluble solid and titratable acid are about 10.5%-13.5% and 0.25%-0.40%, respectively. The fruit tastes sweet and the quality is high. The plant is more resistant to heavy soil, and can grow well in the soil pH 4.0-6.0, and is suitable for cultivation in the Yangtze River Basin and most of southern China.