玉米制种的六项高产措施河南省洛宁县种子公司尚万星，李少辉我县地处豫西山区，系国家级夏玉米种子基地县。从１９８８年开始实施玉米制种优质高产技术，制种产量连年提高，１９９２年达到历史最高水平，１８０００亩制种田平均亩产２０３公斤，并涌现了一大批高产典型。... Six high-yielding seed production measures Luoning County, Henan Province seed company Shang Wanxing, Li Shaohui County is located in the western mountains of Henan Province, Department of national summer corn seed base counties. Since 1988, the high-yielding and high-yielding technology of maize seeds has been put into practice. The seed production has been increasing year by year. In 1992, it reached the highest level in history. The average mu yield of 18000 mu of farmland was 203 kilograms and a large number of high-yield typicals emerged. ...