鲁西南地区玉米机械化密植高产品种筛选

目的]针对目前鲁西南地区玉米（Zea maysL.）品种多、乱、杂等问题,筛选高产、耐密、抗倒和适应机械化生产的品种.方法]选用30个不同熟期、不同适宜种植密度的玉米品种进行比较试验,鉴定在不同年际环境下的生长和产量表现,识别品种的抗逆性、稳产性和机械化收获效率.结果]伟科702、鲁单818、郑单958、隆平206、先玉335增产潜力较大,稳位整齐,苞叶松,抗倒密植,稳产性好,成熟早,脱水快,符合玉米全程机械化作业要求.结论]伟科702、鲁单818、郑单958、隆平206、先玉335可作为鲁西南地区夏玉米机械化生产的重点推广品种.

Screening of Maize（Zea mays L.） Varieties with High Yield and Condensing Mechanized Production in Southwestern of Shandong Province

Objective ] The aim was screen the maize cultivars with high-yield, density resistance, lodging resistance and adapted to the mechanized production in view of the problems that summer maize production has many disadvantages, such as variety area, chaos, miscellaneous in southwestern of Shandong Province currently. Method] Thirty varieties with different mature stage, different planting density were selected to investigate the characteristics of growth and yield in different years and environment, and identify their resistance, stability, mechanical harvesting efficiency. Result] Weike 702, Ludan 818, Zhengdan 958, Longping 206, Xianyu 335 are suitable varieties for operation of full mechanization with more excellent properties such as high yield, neat corn ear, lodging resistance, disease resistance, insect resistance, moderate and accordant ear height, moderate-length bract with loosened in later stage, middie-early maturity, fast filling speed and fast dehydration in later stage. Conclusion] Weike 702, Ludan 818, Zhengdan 958, kongping 206, Xianyu 335 should be the focus promotion cultivars for the process mecha- nization of summer maize production in southwestern of Shandong Province.