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种子活力的衰退,从采收之日起就已出现。有些甚至尚未脱离母株就已开始。只是各类种子衰退的过程的速度和变化的程度各不相同而已。这种现象叫做自然老化。贮存条件的优劣直接影响着自然老化的进程。因此研究在
The decline of seed vigor has occurred since the harvest date. Some have started even before they leave the mother plant. It is only the rate at which the various types of seeds decline and the extent of their changes. This phenomenon is called natural aging. The merits of storage conditions directly affect the natural aging process. So research is here