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蚯蚓卵能不能冻死?! `5 Y5 @6 [# A( N! b7 _& w, j
知否 发表于 2011-1-16 21:21 
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/ H# Z4 C/ |, d9 g+ l If frozen, earthworms will die. They survive freezing temperatures by going below the frost line in winter to hibernate. Earthworm cocoons, however, are much more tolerant to freezing and worm eggs within a cocoon survive in the soil over winter to hatch in the spring when conditions are right. |
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