【摘要】 为了促进玉米新品种龙单246在适宜种植区域内示范推广，本文简要介绍了龙单246亲本来源及选育过程、品种特征特性、产量表现、栽培技术要点及高产制种技术。龙单246是由黑龙江省农业科学院玉米研究所高产遗传育种研究室2015年以改良系H286为母本、改良系LX461为父本杂交选育而成。在2023年通过黑龙江省农作物品种审定委员会审定（审定编号：黑审玉2023L0044）。2020-2021年参加黑龙江省龙科玉米科企联合体区域试验，平均产量9 901.2 kg·hm^-2,比对照品种禾田4号或东农254平均增产9.0%;2022年参加黑龙江省龙科玉米科企联合体生产试验，平均产量10 752.3 kg·hm^-2,较对照东农254平均增产7.0%。龙单246具有粮质好、综合抗性强、丰产性好等特点。更多还原

【Abstract】 In order to promote the demonstration and popularization of Longdan 246 in suitable planting areas, the breeding process, related characteristics, yield, supporting cultivation and seed production techniques of Longdan 246 were introduced in this paper. Longdan 246 was bred by the High Yield Genetics and Breeding Research Office of Maize Research Institute of Heilongjiang Academy of Agricultural Sciences in 2015 with improve inbred line H286 as female parent and improve inbred line LX461 as male parent. The variety was approved by Heilongjiang Crop Variety Approval Committee in 2023（Approval Number: Heishenyu2023L0044）.Participated in the regional trial of Heilongjiang Longke Maize Science and Enterprise Joint Venture from 2020 to 2021, with an average yield of 9 901.2 kg · ha^-1, an average increase of 9.0% compared to the control varieties Hetian 4 or Dongnong 254; In 2022, participated in the production experiment of Heilongjiang Longke Maize Science and Enterprise Joint Venture, with an average yield of 10 752.3 kg · ha^-1, an average increase of 7.0% compared to the control Dongnong 254.It has the characteristics of high quality, multi resistance, high and stable yield and so on.更多还原