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普通的菜种上都有一些有害的微生物,当种子在不良条件下萌芽时,这些有害的微生物可能侵害种子,造成烂种或烂芽。因
Ordinary vegetables have some harmful microorganisms, when the seeds germinate under adverse conditions, these harmful microorganisms may damage the seeds, causing rotten or rotten buds. because