寒旱农业科学2026，Vol.5Issue(9)：834-840,7.DOI:10.3969/j.issn.2097-2172.2026.09.008
西北寒旱区玉米杂交种敦玉810制种区域优化与高产制种技术
Regional Optimization and High-yield Seed Production Techniques for the Maize Hybrid Dunyu 810 in the Cold and Arid Region of Northwest China
摘要
Abstract
To clarify the screening criteria of standardized seed production bases for maize hybrid Dunyu 810 and establish a matched high-yield and high-quality seed production system adapted to cold and arid ecological conditions in Northwest China,re-gional optimization experiments and soil fertility gradient experiments were implemented across 7 seed production sites in Hexi Corri-dor,Gansu Province during 2024 to 2025.Seed yield,seed purity and pollen shedding uniformity of parental lines were determined to reveal how climate and soil conditions regulate seed performance,and integrated technologies targeting flowering synchronization,wa-ter-saving irrigation and green pest control were correspondingly developed.Results showed that the qualified seed production plots were sandy loam lands with altitude≤1 450 m,effective accumulated temperature≥3 000℃ and frost-free period≥150 d.For top-grade fertile fields with organic matter≥12 g/kg within the 0 to 20 cm soil layer,stable seed yield of 4 700 kg/ha and seed purity over 97.6%could be achieved.Seed yield decreased significantly with increasing elevation but increased significantly with greater effective accumulated temperature and a longer frost-free period.A quadratic relationship was observed between seed yield and annual precipi-tation,with 130 mm identified as the precipitation threshold,below this threshold,seed yield increased with increasing precipitation,whereas above it,yield declined.In top-grade fertile fields,the coefficient of variation in female-parent plant height was only 4.2%,the uniformity of pollen shedding in the male parent reached 92.5%,and seed yield was 4 725 kg/ha.Compared with top-grade fertili-ty fields,the coefficient of variation in female-parent plant height increased by 3.6 and 8.3 percentage points in Grade II and Grade III fertility fields,respectively,the uniformity of pollen shedding in the male parent decreased by 7.2 and 15.7 percentage points,re-spectively,and seed yield decreased by 10.5% and 21.3%,respectively.The staggered sowing of two batches of male parents efficient-ly compensated for differences in growth duration between the female and male parents and significantly alleviated flowering asynchro-ny.When combined with precision drip irrigation and a green pest management system integrating ecological trapping,biological con-trol,and precise low-dose pesticide application,this approach is consistent with the development goals of green and water-saving maize seed production in Northwest China.This study defines the ecological requirements and soil fertility suitability criteria for seed production of Dunyu 810 in cold and arid regions.The integrated standardized cultivation techniques can simultaneously increase seed yield and ensure seed purity,making them suitable for large-scale application in the major maize seed production areas of North-west China.These findings provide a technical basis for the high-quality development of the maize seed industry and the stable supply of high-quality seed in cold and arid regions.关键词
敦玉810/玉米杂交种/制种区域优化/土壤肥力/高产制种技术/西北寒旱区Key words
Dunyu 810/Maize hybrid/Seed production area optimization/Soil fertility/High-yield seed production technolo-gy/Cold and arid region of northwest China分类
农业科技引用本文复制引用
周彪,闫富海,吕翔,闫艳标,郭纪坤,闫治斌,王栋,张玉财,马宝才,刘国华,马世军,葸阳,马明帮..西北寒旱区玉米杂交种敦玉810制种区域优化与高产制种技术[J].寒旱农业科学,2026,5(9):834-840,7.基金项目
中央引导地方科技发展资金项目(24ZYQF002) （24ZYQF002）
甘肃省重大专项(24ZDNF001) （24ZDNF001）
甘肃省玉米育繁技术创新中心开放课题. （）
