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从2002-2006年的5年间,是我国实施农业结构战略性调整的关键时期,也是新品种培育、引进、推广及种子管理体系发生深刻变化的重要时期,大量新品种的审定和
During the five years from 2002 to 2006, it is a crucial period for the strategic adjustment of agricultural structure in our country and an important period for cultivating, introducing and popularizing new varieties and profound changes in the seed management system. A large number of new varieties have been validated and