国审品种洛麦23种子繁育法及示范推广效果分析

洛麦23通过建立穗行圃或穗系圃，与“三圃制”结合，形成了4个级别的种子生产程序：先建立穗行圃，再建立穗系圃；穗行圃和穗系圃，隔年交替进行；穗行圃混合收获种子或穗系圃收获种子，再加繁一代即为育种家种子；育种家种子繁殖原原种，原原种繁殖原种。原种即应用于大田生产。通过和种子企业、农场、种子生产专业村合作，采用“科研单位＋种子企业＋农场＋生产基地”联合体，建立健全良种繁育体系。至2013年，洛麦23在黄淮麦区南片得到了较大面积的推广利用，累计推广应用面积在100万hm2以上，创社会经济效益13．7亿元。

Analysis on Seed Breeding and Demonstration Benefit of GS Wheat Luomai 23

Luomai 23 was the variety of wheat, it was through the establishment of head progeny row nursery or spike lines nursery, and com- bined three-course cropping. A four-level seed production program was formed： first established head progeny row nursery, then spike lines nurs- ery, alternating every other year. Mix harvest seed of head progeny row nursery and spike lines nursery was sired breeding seed. The breeding seed was sired original seed, the original seed was sired pedigree seed. Pedigree seed is used in field production. The breeding system was estab- lished and improved by seed company and farm and seed production professional village, use was commonwealth of ＂research units and company and farm and production base＂. Up to 2013, Luomai 23 has been promoting the use of larger area on Huang-Huai Mak South tablets ; it was pro- mote the use of the cumulative area of over 1 million hm2. It creates social and economic benefits 1.37 billion yuan.