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我国以往的育种工作为什么没有多少成绩?为什么没有把国家的农业生产群众的农业实践提高一步?原因很多,我认国育种方法妨碍了这一工作的进步,是最重要的
Why did not the previous achievements in breeding work in our country improve? Why did we not take the agricultural practices of the country’s agricultural practice one step forward? There are many reasons for this. I think the method of breeding has hindered the progress of this work and is the most important