山东省玉米育种取得了很大成就 ,但其遗传基础相对狭窄。主要种质分为改良Reid、Lancaster、塘四平头、旅大红骨和其它杂优种质群。改良Reid和塘四平头杂优群起主导作用。主要杂种利用模式以改良Deid×塘四平头 ,塘四平头×其它种质、改良Reid×其它种质、塘四平头×Lancaster、改良Reid×旅大红骨为辅。应加强种质改良 ,丰富遗传基础 ,探索新的杂种优势利用模式 Shandong maize breeding has made great achievements, but its genetic basis is relatively narrow. The main germplasm is divided into improved Reid, Lancaster, Tong Siping, Luda red bone and other hybrid germplasm groups. Improved Reid and Tong Siping flathead group play a leading role. The main hybrid utilization model to improve Deid × Tong Siping, Tong Siping × other germplasm, improved Reid × other germplasm, Tong Siping × Lancaster, improved Reid × Luda red bone supplemented. The germplasm improvement should be strengthened, the genetic basis should be enriched and new heterosis utilization patterns should be explored