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Acta Prataculturae Sinica ›› 2014, Vol. 23 ›› Issue (5): 223-230.DOI: 10.11686/cyxb20140526

• Orginal Article • Previous Articles     Next Articles

Combined effects of bio-fertilizer and citric acid on turf quality and soil biology on a calcareous soil

LIU Qiang1,4,YAO Tuo2,3,MA Hui-ling1,3   

  1. 1.College of Pratacultural Science, Gansu Agricultural University, Lanzhou 730070, China;
    2.Key Laboratory of Grassland Ecosystem, Ministry of Education, Lanzhou 730070, China;
    3.Sino-U. S. Centers for Grazingland Ecosystem Sustainability, Lanzhou 730070, China;
    4.Gansu State Farm Academy of Agricultural Research, Wuwei 733006, China
  • Received:2014-04-03 Online:2014-10-20 Published:2014-10-20


Nutrient management is an essential part of turf management; nitrogen (N) and phosphate (P) fertilizers are commonly applied to improve turf quality. However, little research on the effect of supplementary fertilizers, such as citric acid and bio-fertilizer, on turf quality has been carried out. This study was initiated to examine the effects of the combined application of citric acid and bio-fertilizer on the turf quality and soil biological characteristics on a calcareous soil. The results revealed that the combination of citric acid and bio-fertilization significantly increased the population of soil microorganisms, especially actinomycetes in the lower soil profile. Citric acid significantly improved the level of available phosphorus and the combination of citric acid and bio-fertilizer significantly improved turf quality provided N & P fertilizer application was adequate.

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