近日北京图书馆来函,本刊已被北大图书馆选入第四版《全国中文核心期刊》(综合性农业科学核心期刊)。这是本刊首次进入该系统核心期刊行列。先前,国家科技部科技信息所也向本刊颁发《中国科技核心期刊》(2 0 0 4 - 2 0 0 6 )证书。到目前为此,本刊已进入北大图书馆的《全国中文 Recently, a letter from Beijing Library was published. Our magazine has been selected by the Peking University Library as the fourth edition of the “National Chinese Core Journal” (Comprehensive Agricultural Science Core Journals). This is the first time this magazine has entered the system core journals. Previously, the Science and Technology Information Institute of the Ministry of Science and Technology also issued “China Science and Technology Core Periodical” (2004-2006) certificate. So far, this magazine has entered the National Library of North China