Comparison and analysis on maize yield performance of mid-maturing, mid-late-maturing and late-maturing varieties in Liaoning Areas
2008
Shi Zhensheng | Zhang Shihuang | Li Fenghai
中国人. 以15个辽宁省有代表性的中熟、中晚熟、晚熟玉米品种为试材，结合1999～2007年辽宁省玉米区域试验结果，对不同熟期品种的产量和生产性能进行比较研究。结果表明：中熟、中晚熟品种较晚熟品种有增产趋势，一些品种表现特别突出；中熟、中晚熟品种密植增产潜力大，密度适应范围广，稳产性更好；群体结构合理，经济系数高，源、流、库协调；在精量播种和机械化收获等方面，中熟、中晚熟品种有明显优势。[著者文摘]
显示更多 [+] 显示较少 [-]英语. The fifteen maize varieties which representative mid-maturing, mid-late-maturing and late-maturing in Liaoning province were carried, combined with the results of regional tests in Liaoning province during 1999 - 2007 and compared the yield and yield performance among different ripening period varieties, especially mid-matur- ing and mid-late-maturing maize varieties. The result indicated that the mid-maturing,mid-late-maturing varieties had yield-increasing tendency compared to late-maturing maize varieties. Some of the varieties had prominent performance. The mid-maturing, mid-late-maturing varieties had great close planting potential and broad density adapta tion scope and stable yield productivity. The mid-maturing, mid-late-maturing varieties had reasonable community structure and high harvest index and coordinated source-flow-sink relationship. They also had obvious superiority in accurate farming and mechanized harvest.
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