水浸控温式水稻种子浸种催芽设备温度场分析

Temperature Field Analysis of Water Immersion Temperature Rice Seed Soaking Germination Equipment

利用有限元方法对寒地水稻浸种催芽过程中种子温度场进行仿真。通过分析可知,水稻浸种催芽过程中最高温度出现在水稻边缘与水接触处,温度为31℃,水稻中心温度最低。随着催芽时间的增加,热量不断向水稻中心处传递,当催芽23 h后中心温度达到了25℃,最高温度仍然保持为31℃,此时水稻整体温度达到了催芽的最适宜温度25～31℃。试验结果和仿真一致。

Temperature field analysis of water immersion temperature rice seed soaking germination equipment was analyzed by finite element method.Simulation analysis showed the highest temperature during soaking appeard in the edge of rice in contact with water.The lowest temperature appeared in the center of rice seed.With the increasing of germination time,the heat transferd to the center of rice seed continuedly.The center temperature reached to 25℃ and the highest temperature reached to 31℃ after 23 h,then the temperature of rice seed reached to the optimum tempreture of 25~31℃.Experiment result was consistent with the simulation results.