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我们于1986~1989年从保存的5000余份小麦品种资源中选取不同来源的千粒重在40克以上的品种413份。在哈尔滨地区连续四
From 1986 to 1989, we selected 413 different varieties of more than 40 grams of grain from more than 5,000 varieties of wheat cultivars. Four in a row in Harbin