搞好种子检验控制种子质量内蒙古赤峰市种子公司赵洪春多年来，我市种子质量一直保持较高水平。１９８５～１９９４年检验入库种子，一级率为８５．４％。通过后代鉴定，１９９３年生产的玉米自交系纯度在９９．９％以上的占６０％，在９９．０％～９９．９％的占１７％；... Improve seed testing and control seed quality Chifeng City, Inner Mongolia seed company Zhao Hongchun Over the years, the city’s seed quality has remained at a high level. 1985 ~ 1994 inspection of storage seeds, a rate of 85.4%. Through the identification of offspring, the purity of maize inbred lines produced in 1993 was above 99.9%, accounting for 17% at 99.0% ~ 99.9%.