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前言大豆品种区划是实现品种布局区域化的基础工作,也是实现大豆高产、稳产的主要措施。东北地区的大豆品种区划早已有许多学者根据各地的气候条件、土壤肥力和栽培管理水平等综合条件进行区划。近年来,随着大豆生产的发展及新品种的增加有必要进一步
Preface Soybean varieties regionalization is to achieve regionalization of the basic layout of varieties of work, but also to achieve high yield soybean, stable main measures. In the northeast region, there are already many scholars in the division of soybean varieties based on the comprehensive conditions of climatic conditions, soil fertility and cultivation management. In recent years, with the development of soybean production and the increase of new varieties it is necessary to go further