2 Results and Analysis The drying time and germination results of the four crops of sugar beet, canola, tobacco and marigold were shown in Table 1. 2.1 Beets The experimental results show that with the increase of drying temperature, the time is gradually shortened, and the difference between each temperature is significant. When the temperature is 60 °C and 70 °C, the drying time is basically the same, both are about 2h. From the germination rate point of view, with the increase of temperature, the germination rate also showed an upward trend and was higher than the control, especially at 60°C. It shows that in a certain temperature range, high temperature drying can increase the germination of seeds. Therefore, we believe that the most suitable beet pill drying temperature is 60 °C, this time is short, high efficiency, and there is a tendency to stimulate the seeds to increase germination. 2.2 Rape For the rapeseed pill, in the set temperature range, the temperature gradually increased from 40 to 70 °C, drying time from 233min to 95min, that is, with the gradual increase of temperature, drying used The time is getting shorter and shorter. The germination rate at 50°C, 60°C, and 70°C was lower than that of the control, which was lower than that of the control by 1.0-1.9%. At the drying temperature of about 40°C, the 233 min drying time had no effect on the rapeseed variety, and the germination rate was higher than that of the control by one percentage point. In the actual processing, the vibrating fluidized bed is used for the processing of the pellets, and the temperature is controlled at about 40°C. It takes about 10 minutes for the pellets to be dried, and the dried pellets do not crack. 2.3 tobacco tobacco pill clothing species in the 50 ~ 800C temperature range, the drying time from 217min to 48min, compared with the control of natural drying seeds, 50 °C germination rate of 89.5%, higher than the control 4 Percentage point, the germination rate dropped above 50°C, and the germination rate dropped to 10.8% when the temperature rose to 80°C, reaching the lethal temperature, and the seeds basically lost their activity. Therefore, the optimum drying temperature of tobacco pellets is 500 °C. In the selection and design of drying machines, the temperature variation can not be too large, so as not to affect the viability of the seeds. 2.4 Marigold The three temperature treatments of the marigold pill were basically the same as those of the other three tests. The germination rate was 2.5 percentage points lower than the control at a low temperature of 500°C, and higher than that of the control at 60°C and 700°C. The highest germination rate at 60°C was 90.0%, which was 5 percentage points higher than the control. Therefore, the drying temperature of marigold pill should be controlled at 60-700°C. 12M Pipe Outside Seam Machine,12 Meters Pipe Outside Seam Welding,12 Meters Pipe Outside Seam Welding Machine,12 Meters Pipe Longitudinal Seam Welding Wuxi Taohua Machinery Technology co.,Ltd , https://www.wxblossom.com