杂交玉米隔离区外繁种问题不容忽视河南省嵩县种子公司（４７１４００）张松明付顺卿随着国家对产品质量的重视，全国各级种子公司都非常重视种子的质量。但有一个问题却一直影响着种子质量的提高，那就是制种区外繁殖的种子混入了合格种子中。我国广大农村实行的是联产承... Hybrid Corn Quarantine Outside the variety of problems can not be ignored Songxian Seed Company of Henan Province (471400) Zhang Songming Fu Shunqing With the country’s emphasis on product quality, seed companies at all levels attach great importance to the quality of the seeds. However, one problem has always been to affect the improvement of the quality of seeds. That is, the seeds that breed outside the seed production areas are mixed with the qualified ones. China’s vast rural areas is the co-production ...