关键词: 水稻, 干燥方式, 袋式烘干, 种子质量

Abstract:

In this experiment, the effects of drying method on seed quality and drying rate were studied, using rice seed of Yongyou 538 as material. The results showed that drying temperature determined drying duration, 50℃ constant temperature drying method significantly shortened the drying time compared to bag drying and air-blowing, the water content declined fastest in rice stack of bag drying at the beginning 8 h of the drying duration. Raising temperature drying improved seed vigor index, 50℃ constant temperature method increased seed vigor index by 26.3%, 22.7% and 14.2% respectively, compared to air-blowing, bag ordinary drying and bag heated drying method, bag heated drying slightly increased seed vigor compared to air-blowing and bag ordinary drying. The research indicated that the bag drying method with air blowing and heating effectively shortened the drying duration time, which can provided a reference for small-scale seed drying in Southern rice area.

Key words: rice, drying method, bag drying method, seed quality