摘要
研究结果表明,穗粒数与千粒重比较,前者是一项易变的因素,并对产量的影响更大些.抽丝到抽丝后14天是决定穗粒数的关键时期,而抽丝到抽丝后24天中改善营养对千粒重较重要,加强抽丝到抽丝后24天的管理可增加产量.育种上可以把粒重较高、穗粒数稳定作为高产品种的选择指标.
The results showed that the grain number per ear was a more changeable factor than 1000-grain weight. In comparison with 1000-grain weight,the grain number per ear made a greater contribution to yield. The key stage for grain number was from silking to 14 days after silking. Improve nutrition during a period from silking to 24 days after silking had greater importance to increase 1000-grain weight. Therefore,it would increase yield to enhance management in this period. Steady grain number and higher grain weight could be selected as characters of high-yield varieties.
出处
《山东农业科学》
1989年第2期4-7,共4页
Shandong Agricultural Sciences
关键词
玉米
穗粒数
千粒重
产量
Maize
Yield
Number per ear
1000-grain weight
