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cje ›› 2004, Vol. ›› Issue (4): 65-68.

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Long-term effects of different fertilization on calcareous soil microbial P and phosphatase

XIE Linhua1, LÜ Jialong2, ZHANG Yiping2   

  1. 1. Environmental Engineering Teaching and Research Section of Shanxi University of Science and Technology, Xianyang 712081, China;
    2. Northwest Agriculture and Forestry University of Science and Technology, Yangling 712100, China
  • Received:2002-04-28 Revised:2002-11-02 Online:2004-08-10

Abstract: In this study,determination of soil microbial Pand phosphatase activity of long term different fertilization treatments:no fertilizer,chemical fertilizers,corn straw(content of low,middle and high)+chemical fertilizers,animal manure and chemical fertilizers in combination,fallow treatment. The results showed that fertilization treatments increased soil microbial P,similarly,phosphatase activity were increasea by the fertilization of organic manure mixed with chemical fertilizers together.Calcareous soil microbial Pwas closely related with total P,labileorganic Pand rapidly available phosphorus,this suggests the utilization rate of fixed Pin calcareous soil could be improved by improving soil microbial P.

Key words: Urea, Soil, pH, Active Al

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