When the contents of urea-nitrogen were 75%, tobacco seedlings growth was obviously restrained, photosynthesis and the NR activity reduced, the root absorbing ability dropped than CK.
英
美
释义
与对照相比,当尿素态氮为75%25时,烟苗的生长受到明显抑制,叶片的光合特性和NR活性降低,根系吸收能力下降。
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