关键词: 浙江省, 水稻种子, 机械干燥, 种子质量, 调研

Abstract: Rice seed quality is crucial for rice production. In the process of rice seed production, the drying of rice seeds is one of the important links in the overall control of seed quality, the problems that occur in mechanical drying are the important factors affecting the quality of rice seeds. Therefore, a comprehensively analysis on the problems and solutions of rice seed mechanical drying in Zhejiang province was conducted after interviewing 19 major rice seed enterprises in Zhejiang province. Among the 19 seed enterprises, 12 seed enterprises had seed quality problems due to mechanical drying problems in the past five years. The damage of drying equipment, operator errors and drying parameter settings are important reasons for the accidents of rice seed mechanical drying quality. The“Sanjiu” and“Golden” grain dryers were the most widely used drying equipments in Zhejiang province, and also be considered to be the ideal drying equipments for rice seed mechanical drying. The mechanical drying with high-temperature in high moisture rice seeds were liable to induce seed quality damage. Two-stage or multi-stage drying method was the ideal method for mechanical drying of high-raw water rice seeds. Futhermore, according to the problems of mechanical drying in rice seeds, this study proposed some solutions in the aspects of policy guidance, development of mechanical drying equipment, improving mechanical drying capacity and strengthen theoretical research on mechanical drying. This study would provide theoretical and practical guidance for promoting the development of rice seed mechanical drying and the safety production for rice seeds.

Key words: Zhejiang province, rice seed, mechanical drying, seed quality, investigation