先玉335是美国杜邦先锋公司针对中国市场研发的一种玉米种子,由登海种业和敦煌种业与其成立的合资企业负责推广、销售。虽然由合资公司运营,但是先玉335的研发由杜邦先锋的独资公司进行,登海种业等国内企业没得到核心技术,“本来希望通过合资学习外资的技术,但是这个目的没有达到。”中国农科院作物所玉米系主任、研 The first jade 335 is a kind of corn seed developed by Du Pont Pioneer Corporation in the Chinese market. It is promoted and sold by Denghai Seed Industry and Dunhuang Seed Industry and its joint venture. Although operated by a joint venture, the development of Xiangyu 335 was carried out by a wholly owned company of DuPont Pioneer. The domestic enterprises such as Denghai Seed Industry did not have the core technology. “This technology was originally intended to be used to learn foreign investment through joint ventures, but this purpose has not been met.” "Chinese Academy of Agricultural Crops corn department director, research