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皖北地区过去被列为玉米杂交制种非适宜区。作者在分析以前杂交制种低产原因，本地区气象要素，总结周边地区高产制种技术的基础上，提出“皖北地区玉米高产杂交制种技术研究”课题。通过选用高产制种组合，调整播期，父母本错期、行比，增加母本密度，优化配方施肥等一系列技术措施，将本地区玉米杂交制种产量由过去的2250kg／hm2左右，提高到3750kg/hm2以上，实现本地区玉米杂交制种历史性突破，并提出4500kg/hm2玉米高产制种模式，
Northern Anhui Province in the past was classified as non-suitable hybrid corn seed. Based on the analysis of the reasons for the low yield of hybridization and the meteorological elements in the area before the conclusion of the high-yielding seed production techniques in the surrounding areas, the author put forward the subject of “High-yielding Maize Hybrid Seed Production Techniques in Northern Anhui Province”. Through the selection of high-yielding combinations, a series of technical measures such as sowing date, parents’ false period, row ratio, increasing female parent density and optimizing formula fertilization were adopted to increase the yield of maize hybrid seed production in this area from 2250kg / hm2 in the past To 3750kg / hm2 or more, to achieve a historic breakthrough in hybrid seed production in the region, and proposed 4500kg / hm2 corn seed production mode,