一看整齐度:混有其它稻谷的杂交水稻种子粒型不整齐,如混入的父本可其它水稻明显比杂交水稻种子细长饱满,而粳稻谷则较圆。二看谷壳色:杂交水稻种子谷壳上略带不均匀的黄褐色等生理性杂色,而父本保持系谷粒颜色较为一致,保持系 A look at the uniformity: mixed with other paddy hybrid rice seeds irregularly shaped, such as mixed with other rice may be other rice than the hybrid rice slender full, while the japonica rice is more round. Second, look at the chaff color: Hybrid rice seed chaff slightly uneven brown and other physiological variegated, while the parental line to maintain the Department of grain color is more consistent to maintain the Department