1972年,从河北果树所引入早酥、锦香、锦丰、早白等一批梨新品种接穗。经鉴定,其中多数品种不适应上海风土,产量不高,唯有早酥果大美观,肉细汁多,采收期早,可增加市场淡季供应。目前已在本市部分果园少量试种。一、试材及引种条件早酥由辽宁兴城的中国农科院果树所育成。杂交亲本是苹果梨×身不知梨,1956年杂交,1969年定名。兴城地处我国温带冷凉干旱地区,地理生态环境与上海迥然不同。早酥梨引入后经高接繁殖,于1975年冬建立 In 1972, introduced from Hebei fruit trees as early as crisp, Jin Xiang, Kam Fung, early white and a number of new varieties of pear scion. Identified, most of which varieties do not adapt to the Shanghai terroir, the yield is not high, only early crisp fruit beautiful, juicy meat, harvest early, can increase the market off-season supply. At present, some orchards in the city have been planted for a small amount. First, the test material and the introduction conditions Morning Crisp from Xingcheng, Liaoning Academy of Agricultural Sciences bred fruit trees. Hybrid parents are apple pear × I do not know pear, 1956 hybrid, 1969 named. Xingcheng is located in the temperate cool arid region of China, and the geographical environment is quite different from Shanghai. As early as pear after the introduction of high-yielding breeding, established in the winter of 1975