Theoretical Analysis and Experiment of Super Hybrid Rice Seeds Embryo Oriented Based on Arc-Shaped Guided Plate

Abstract

Planting requirement of Super Hybrid Rice is 2±1 seedlings per hill, so sowing seeds request seed quantity and position accuracy for super rice transplanting mechanization. Based on the physical characteristic of super rice seed’s surface that along its long axis the awns grow in all directions from glumes to the glumes tip, the rotation mechanism of rice seeds embryo to the same direction were researched. In consideration of the difference of rice seeds, the arc-shaped guided plate with high friction coefficient was proposed. Orthogonal method was used to analyze the influence of parameters on rice seeds arrangement and a set of parameters were got. Vibration seed metering device was fabricated, and its structure parameter could be adjusted conveniently. Experimental results showed that above 88% super rice seeds embryo were orienting ordered, and the seed metering device based on arc-shaped guided plate can be used in seeding pipeline.