摘要
通过播种期试验,研究了不同生态条件对玉米品种郑单22的生长发育和产量的影响。结果表明,在河南夏播条件下,随着播种期的推迟,郑单22的产量逐渐下降,穗行数、行粒数、千粒重逐渐降低,叶面积系数最大值、干物质积累量逐渐减小,生育进程加快,但6月15日以前播种差异不大。
Sowing-date experiment of corn variety Zhengdan 22 at Ayang city, the influence of different ecological condition on growth and yield of it was studied. The yield, ear row number, and row grain number dropped, the maximum leaf area index and dry matter accumulation declined, the growing process quickened , along with the postponement of summer sowing
基金
国家粮食丰产工程项目(2006BAD02A07-3)
河南省重大专项(0620010200)
科技支撑计划(2006BAD01A03)
