The canopy architecture, solar radiation traits and apparent photosynthesis characteristics of both small spike-type cultivar(Yumai 49) and large spike-type cultivar(Zhoumai 13) had been studied under field conditions. The main results were as follows:1.
在大田条件下，连续两年对两个最具超高产潜力的多穗型小麦品种豫麦49和大穗型小麦品种周麦13的冠层结构、光辐射特征和光合特性进行了系统研究。
参考来源 - 高产小麦群体光辐射特征与光合特性的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The extinction coefficient for diffuse and direct radiation is given by crop canopy architecture and solar position.
冠层对太阳漫射光的消光系数由作物株型确定，对直射光的消光系数由株型和太阳位置确定。
There is a clear difference about colonial canopy architecture character and LAI in different growth stage between different spike cultivar .
不同穗型品种的群体冠层结构性状及不同生育时期的LAI均有明显差异。
The results of study showed that three major wheat cultivars released in different periods were significantly different in canopy architecture.
研究表明，不同时期小麦主栽品种的冠层结构是不同的。
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