1　观种胚　优质的稻种外观有光泽 ,种胚充实 ,用手捻时 ,种胚湿润并带绿色 ;劣质稻种种胚颜色较暗 ,有的干瘪。2　看杂质　优质稻种净度不低于 97%。将掌心朝上 ,插入种子堆取出一些种子轻轻振动后 ,如手心上的砂、石、土超过 5%则为劣质种子。如果杂质少于 3% ,则符合优质种 1 see the embryo qualities of rice appearance shiny, seed embryo enrichment, hand twist, the embryo moist and greenish; poor quality rice seed embryo darker, and some shriveled. 2 to see impurities high-quality rice seed purity of not less than 97%. Palm up, insert seed pile Remove some seeds gently vibration, such as palms of sand, stone, soil, more than 5% is inferior seeds. If less than 3% of impurities, then meet the high-quality species