鲁西北平原作物群体几何性状研究

Geometrical Characteristics of Crop Colony in Northwest Shandong Plain

作物群体几何性状用叶倾角和叶方位角表示。叶倾角的大小主要决定于作物品种的遗传特性,受种植方式的影响较小。叶倾角大的作物品种,群体叶面积大;叶倾角小的作物品种,群体叶面积小。叶方位角的分布主要受种植方式的影响。

The geometrical characteristics of crop colony are described by leaf inclination and position angles. The leaf inclination angle is mainly affected by genetic characters of the crop, the planting design has little influence on it. Leaf area index is larger for the variety with larger inclination angle, and smaller for the variety with smaller inclination angle. The leaf azimuth to a great extent is decided by the planting design.