The effect of La(NO 3) 3 on natural aged or artificial aged seed vigor of rice was studied. The results show that the germination rate, germination index and vigor index of aged seed of rice increase with La(NO 3) 3 treatments.

• 自然和人工老化的水稻种子经La(NO3) 3 处理后 ,发芽率、发芽指数、活力指数都有明显提高 ,呼吸作用增强 ;