种子的活力表示种子的健壮度,是一种比生活力(发芽率)更有效而准确的表征种子质量的指标,受到国际种子检验协会的大力推荐,在许多国家得到广泛应用,也受到我国有关方面的重视,研究和推广。据调查,已劣变但发芽率尚可达80～85%的种子,播种后田间出苗率极低,通常低于10%,且这种苗的抗逆,抗病能力也很差,如不采取措施就会造成绝产。这说明单靠种子的生活力不能全面反映种子质量的优 The vigor of the seed indicates the robustness of the seed, which is an indicator of the seed quality more effectively and accurately than the viability (germination rate). It is highly recommended by the International Association of Seed Testing and is widely used in many countries and is also affected by our country Aspect, research and promotion. According to the survey, seeds which have been deteriorated but whose germination rate can still reach 80-85%, the seedling emergence rate after the planting is very low, usually less than 10%, and the resistance and disease resistance of this seedling are also poor. Take measures will result in abortion. This shows that the viability of the seed alone can not fully reflect the quality of the seed