不同玉米品种抗旱性及产量因素分析

为了筛选适宜沧州地区旱碱地种植的玉米品种并为玉米抗旱性提供依据，选取了当地和引进的11个玉米品种，于室内芽苗期抗旱剂胁迫鉴定及田间旱地、水浇地两种生态环境种植鉴定比较其耐旱性。研究表明，萌发期玉米抗旱指数、相对发芽率‘大玉3号’最高，分别为0.92、91.91；苗期玉米株高和根长以‘大玉3号’的伤害率最小，其次是‘承玉23’；对‘秀青74-9’的伤害率最大；田间整个生育期的鉴定表明‘大玉3号’、‘承玉23’、‘中单909’的抗旱系数和抗旱指数最高抗旱性最好，分别为1.22、1.23、1.07。由此可见，‘大玉3号’、‘承玉23’、‘中单909’较适宜沧州旱碱地种植。

Identified Difference Maize Drought Resistance and Yield Factors

In order to select the suitable breeding and provide a basis for corn drought resistance, 11 maize varieties were selected in this test, bud seedling by drought-resistant agent and breed in dryland, irrigated land. two ecological environment planting appraisal compare their drought germination of drought-resistant index, relative germination percentage of were 0.92 and 91.91. Seedling stage corn plant height, root length to ＇Dayu resistance. The results showed that, ＇Dayu 3＇ were the highest, which 3＇ minimum damage rate, followed by ＇Chengyu 23＇; ＇Xiuqing74-9＇ damage rate most. The results also showed that, ＇Dayu 3＇, ＇Chengyu 23＇, ＇Zhongdan909＇ had the highest drought resistance, they were 1.22, 1.23, 1.07. So ＇Dayu 3＇, ＇Chengyu 23＇, ＇ Zhongdan909＇ were suitable to planting in Cangzhou.