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天然下种的英文

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"天然下种"怎么读用"天然下种"造句

英文翻译手机手机版

  • natural seeding
  • wild seeding

例句与用法

  • The more the water shortage , the thicker the dried layer
    ( 4 )严重土壤干层使天然下种更新不良。
  • Through the stand investigation by setting up the sample site , the investigation results showed that the average dbh of 15 - year - old alniqhtllm fortunei planted under nature was 60 % larger than that of 17 - year - old pinus massoniana plantation under the same condition , the average tree height of the above was 38 % larger than that of the latter , the average single - tree volume of the above was 3 . 2 times higher than that of the latter , the above showed the absolute dominance in stands
    摘要设立标准地进行林分调查,在标准地中选取拟赤杨标准木进行树干解析,采用生长对比方式分析拟赤杨在马尾松人工林中的生长情况,调查结果表明,在同一环境条件下, 15年生天然下种的拟赤杨比17年生马尾松人工林平均胸径大60 % ,平均树高高38 % ,平均单株材积大3 . 2倍,在林分中表现出绝对优势。
用"天然下种"造句  

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