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栽培育种吉林省中部玉米主产区进一步提高单产途径的探讨·········“····“·…李维岳刘凯等1(1)吉林省大豆品种资源研究 n.蛋白质含量及其氨基酸组成“·······”····“················……吕景良吴百灵等l(6)大豆地膜覆盖技术研究·
Study on Cultivation and Breeding of Maize Production in Central Jilin Province ························ ·············· ······································································································································································ 1 And its amino acid composition "· ······························································ · Lv Jingliang, et al. (6) Study on Film Mulching of Soybean ·