Application organic fertilizer for long time can improve the content of humus, and inorganic fertilizer can enhance the content of Fulvic acid, decrease the content of humic acid.

 
  • 長(cháng)期施用有機肥能提高胡敏酸的含量,施用無(wú)機化肥可提高富里酸降低胡敏酸的含量。
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