种子发芽率是通过种子标准发芽试验得到的,它所代表的是种子的发芽力,也就是种子在适宜的条件下发芽并生长成正常幼苗的能力。比如我们在实验室中根据种子的不同而选用不同的置床方式(沙床、纸床)、适宜的光照、水分、温度,对种子进行的消毒处理,打破休眠处理,破除硬实处理等,这些都是为了给种子创造一个适宜的发芽环境。但是在大田条件下,种子很难有这样的发芽环境,成苗率明显低于发芽率。为什么会出现这样的情况呢?这是因为发芽率代表的是种子的发芽力,是种子在适宜的条件下发芽并生长成正常幼苗的能力。而与田间出苗率关系更为密切的是种子活力,可以用发芽势表示。在种子劣变过程中,活力的降低要明显的先于发芽力,同时也可以看出在发芽力与活 Seed germination rate is determined by seed standard germination tests, which represent the seed’s germinating power, that is, the ability of the seed to germinate and grow into normal seedlings under suitable conditions. For example, we choose different bed setting methods (sand bed, paper bed), appropriate light, moisture, temperature, seed disinfection, breaking dormancy treatment, breaking hardwood treatment, etc. in the laboratory according to the different seeds Is to create a suitable seed germination environment. However, in the field conditions, the seed is difficult to have such a germination environment, seedling rate was significantly lower than the germination rate. Why does this happen? This is because the germination rate represents the seed’s germinating power and is the ability of the seed to germinate and grow into normal seedlings under the appropriate conditions. And the germination rate in the field is more closely related to the seed vitality, you can use germination potential. In the process of seed deterioration, the vitality of the reduction should be significantly before the germination force, but also can be seen in the germination and live