defoliation [ˌdi:ˌfoʊlɪ'eɪʃn]

例句:

• Rachis - removing could increase grain weight, while defoliation could lower grain weight.
  剪库增加粒重, 而剪源则降低粒重.
  
• Viticulture: Traditional; defoliation and green harvest to have optimal yield control.
  种植方式: 传统种植, 疏叶疏果来控制产量.
  
• Defoliation is achieved by adding elements which have a greater affinity than iron for oxygen.
  脱氧是加进同氧的亲和力比铁更大的元素来实现的.