两种油菜收获脱出物的物理机械特性及空气动力学特性测定与分析

Measurement and Analysis of Physical Mechanical Properties and Aerodynamic Characteristics of Harvesting Extractions from Two Rape Varieties

研究了两个油菜品种(沣油737和中农油6号)收获脱出物的物理特性和空气动力学特性。结果表明:两种油菜收获脱出物的三轴尺寸存在较大的差异;两种油菜籽粒的含水率、千粒重和密度基本一致,而荚壳的千粒重、含水率、密度以及短茎秆的千粒重存在一定差异;两种油菜籽粒的恢复系数存在差异;两种油菜籽粒和荚壳的剪切模量都有明显差异;两种油菜收获脱出物的悬浮速度基本一致。

The physical mechanical properties and aerodynamic characteristics of harvesting extractions from two rape varieties（ Fengyou 737 and Zhongnongyou No. 6） were studied. The results showed that： there were big differences in triaxial size of harvesting extractions between these two rape varieties; the water content,1000-grain weight and density of rapeseeds of two varieties were basically the same,but there existed certain differences in the water content,1000-grain weight and density of pod-shell,as well as the 1000-grain weight of short stalk between two varieties; the recovery coefficient of two kinds of rapeseeds was different; there were obvious differences in shear modulus of rapeseed and pod-shell between Fengyou 737 and Zhongnongyou No. 6; the suspension speed of harvesting extractions from two rape varieties was basically the same.