• 1. critical salinity: 临界盐度 | 临界矿化度
• 2. critical salinity level: 盐分阈值
• 3. critical ratio of salinity decrease: 临界盐浓度递减率

• 1.Critical value of salinity tolerance should be determined during tree growth period.
  树种耐盐临界值，应以林木生长期测定为准。
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