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灿稻明显比杂交水稻种子细长饱满,而粳稻谷则较圆。 A look at the uniformity. Hybrid rice seeds mixed with other paddy grains are not regular in grain size. For example, the other male rice varieties that are mixed with other hybrid rice are significantly longer and slender than the hybrid rice seeds, whereas the japonica rice is more round.