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农学玉米主要性状的签因效应及其与杂种优势关系的研究·……..尹燕抨童玉森(l)加水稻旱伙生理特性的研究—旱育秧苗的光合特性 ··········································……金留福董树亭张春庆王纪军(1)3。鲁西北地区不同作物?
Study on the Signatory Effect of Main Characters of Agronomy and Its Relationship with Heterosis ·························································································································································································· ........ ········································································································ ...... Northwest different crops?