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玉米制种把“五关”抓“六改”陕西省旬阳县种子公司陈和润，魏荣兵旬阳县地处陕南秦巴山区，玉米年播种面积在４０万亩以上，种子靠自繁自制。特别是玉米杂交种需要量大，一直靠扩大面积增收，花工费时不经济，且因人力有限，种子质量得不到保证。９０年代初，种子公司一...
Seeds of Maize Seize the “Five Kinds of Customs” and “Six Changes” Chen He Run and Wei Rongbing, Xunyang County, Shaanxi Province Xunyang County is located in the Qinba Mountains in southern Shaanxi. The annual sown area of maize is more than 400,000 mu, and the seeds are self-made. In particular, the large amount of corn hybrids has always been by increasing the area of income, labor-intensive time-consuming economy, and due to limited manpower, seed quality can not be guaranteed. Early 90s, a seed company ...