commercial fertilizer造句

"commercial fertilizer"是什麽意思   


  1. Along several streams in alaska , we have calculated that the total amount of nitrogen and phosphorus provided by the carcasses equals or exceeds recommended concentrations of commercial fertilizer for similar plants in northern forests
  2. For purposes of illustration , i have stressed the importance of post - harvest activities , but i might just as easily have written instead on pre - production activities such as the development of commercial fertilizers , whether natural or synthetic , and their acquisition by farmers , as well as innovations in seed and animal breeding , including most recently , of course , the development and employment of genetically modified organisms gmos
  3. It's difficult to find commercial fertilizer in a sentence. 用commercial fertilizer造句挺難的


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