 鲜花( 173)  鸡蛋( 1)
|
蚯蚓卵能不能冻死?
8 E4 E, S/ K7 }/ Y, r9 i5 P( Q知否 发表于 2011-1-16 21:21 
: V- @& f; z/ {- {5 H/ }9 |/ O, b7 F t6 `5 L; 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. |
|