【1000个园艺小知识】播种完，到底要不要给种子覆土呢？

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光照能影响种子发芽，比如有的种子必须见光才能发芽，这类就是喜光的，对光敏感的，像这类播种的时候只需要轻轻地把它放到土表，不需覆土。而另一种嫌光种子，必须在黑暗里才会发芽，所以播种时一定得埋入土内，才发芽。购买的种子需要注意哦~