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Acta Prataculturae Sinica ›› 2009, Vol. 18 ›› Issue (4): 251-255.

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Polyphenol oxidase activity and its relationship to the soil main fertilizer factor in west Songnen alkali grassland

YUE Zhong-hui1,2, WANG Bo-wen1, WANG Hong-feng1, YAN Xiu-feng1   

  1. 1.Key Laboratory of Forest Tree Genetic Improvement and Biotechnology, Ministry of Education,
    College of Life Science, Northeast Forestry University, Harbin 150040, China;
    2.Department of Life Science and Technology, Harbin Normal
    University, Harbin 150025, China
  • Received:2008-09-16 Online:2009-08-20 Published:2009-08-20

Abstract: Polyphenol oxidase (PPO) activity and its relationship to the main soil fertility factors in west Songnen alkali grassland were examined. PPO activity was higher in bare and sparse vegetation spots, but lower in lush vegetation spots. The seasonal dynamics of PPO activity varied in different spots. PPO activity was highly correlated with fertility factors except for potassium nutrition and the most important factor was total salt. PPO activity could be used to show changes of total salt, pH value, total N, available P and organic matter.

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