 鲜花( 173)  鸡蛋( 1)
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蚯蚓卵能不能冻死?
' O( t" V. e, _/ H. x2 E4 a知否 发表于 2011-1-16 21:21 
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) v, W4 l# I5 j5 b, c5 E/ A9 W 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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