Former because the fruiter has not enter rest period,be, because latter criterion cultivates body to already removed dormancy, its are fought cold muscularity drops greatly and cause freeze injury.

 
  • 前者是因為果樹(shù)尚未進(jìn)入休眠期,后者則因為樹(shù)體已解除休眠,其抗寒力大大下降而造成凍害。
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