Canopy Architecture and Photosynthetic Characteristics in Two Winter Wheat Culti vars with Different Spike Type Effects of different fertilizer treatments on canopy architecture and grain yield characteristics of winter Wheat\|Yumai 49 Canopy Architecture Characteristics of Spring Wheat under Controlled Traffic Tillage with Mulching in Ridge Study on Branching Pattern Plasticity of Larix chinensis Azimuthal Distribution of Maize Plant Leaves Determined by 3D Digitizer