“丹玉13”由我所于1985年从丹东市农科所引入,累计推广种植33万亩。“丹玉13”平均亩产603.9公斤,比我地主栽玉米品种“宁单13”每亩增产77.3公斤,纯增经济效益47.12元,总增经济效益1555万元。1992年成为我地玉米主栽良种。“丹玉13”幼苗叶鞘浅紫色,前期长势较慢,中期发育较快,叶片向上倾斜叶片绿色。 “Dan Yu 13 ” by my in 1985 from Dandong City, agricultural introduction, a total of 33 million mu of planting and promotion. “Dan Yu 13 ” average yield of 603.9 kilograms, than my main varieties of maize “Ning single 13 ” increase 77.3 kilograms per mu, net economic benefit 47.12 yuan, the total economic benefit increased 15.55 million yuan. In 1992 to become my main varieties of corn. “Dan Yu 13 ” seedling leaf sheath light purple, pre-term growth is slower, mid-term development is faster, the leaves tilt up green leaves.