摘要
对不同密度条件下不同株型6个夏玉米品种进行了研究,筛选具有超高产潜力的优势品种。结果表明,对于不同株型品种,光合速率均是低密度处理高于高密度,其中紧凑型品种CF008光合速率最高。从产量性状分析,CF008产量最高,郑单958其次;CF008不同密度之间差异不显著;郑单958低密度产量显著高于高密度。同样,CF008经济系数最高,郑单958、金海5号和鲁单6003依次降低,不同密度间差异不显著。说明紧凑型品种的表现明显好于半紧凑型品种。
Under different density conditions, different plant shape summer corn cuhivars were studied aiming to choose preponderant cuhivars which had high yield potential. The results showed that comparing low-density conditions corn leaf area index （LAI） was higher than high-density. The rate of photosynthesis was higher than low density conditions and the rate of photosynthesis of CF008 was the highest in all cultivars. Grain yield of CF008 was the high- est and the difference was no significant between high-density and low-density, while yield of Zhengdan958 was higher under low-density conditions, which showed that CF008 could density-resistant higher than Zhengdan958. Similarly, the harvest index of CFO08 was the highest and the difference was no significant in different density conditions. In a word, compact type cuhivars were better than those of half compact type cuhivars and CF008 was slightly better than ZhengDan 958.
出处
《玉米科学》
CAS
CSCD
北大核心
2007年第2期79-81,共3页
Journal of Maize Sciences
基金
国家"十五"科技攻关项目(2001BA508B02-06)
关键词
夏玉米
密度
叶绿素
光合速率
产量
Summer corn
Density
Chlorophyll
Photosynthetic（Pn）
Yield
