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bei jing de tu zhong ping guo
Author(s): 
Pages: 42-43
Year: Issue:  2
Journal: CHINA NATURE

Keyword:  苹果齐民要术土种引进种北京地区北京市生产情况杂交种引进品种本草纲目;
Abstract: <正> 每年秋季北京上市的当地所产苹果,目前都是引进的外来品种,或引进品种的杂交种.据笔者记忆,北京市上最早见到引进种苹果当在五十至五十五年前.那么,在引进这些外来品种之前,北京地区是否也产苹果,它的生产情况又是怎样的呢?我国土种苹果大都产于北方,后来逐渐发展到几乎各省都有.其栽种历史颇为悠久,据说魏晋时已广为栽培,始名为"奈".北魏贾思勰《齐民要术》引郭义恭《广志》谓:"张掖有白奈,酒泉有赤奈,西方例多奈,家以为脯,数十百斛以蓄积,如收藏枣栗.魏明帝(227~239)时,诸王入朝,夜赐冬成奈(奈中一种晚熟的,冬至成熟,谓之冬
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