掖单１３号高产栽培技术云南省种子公司６５００３１曹秉益掖单１３号是山东省莱州市玉米研究所于８０年代初用自交系４７８作母本、丹３４０作父本育成的单交种。１９８８年引入我省，先后参加省多点试验、省区试，产量均名列前茅。１９９１～１９９２年省区试平均单产５... Yedan No.13 High Yield Cultivation Technique Yunnan Seed Company 650031 Cao Bingyi Yedang No.13 is a single cross breed that was bred from the inbred line 478 as the female parent and Dan 340 as the male parent in the early 1980s at Laizhou Maize Research Institute in Shandong Province. Introduced to our province in 1988, has participated in the provincial multi-point test, provincial test, output are among the best. 1991 ~ 1992 provinces test average yield 5 ...