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Acta Prataculturae Sinica ›› 2009, Vol. 18 ›› Issue (3): 154-158.

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Influence of urea application on aboveground biomass and important value of the species in the degraded grassland

HE Dan1, LI Xiang-lin1, WAN Li-qiang1, HE Feng1, LI Chun-rong2   

  1. 1.Institute of Animal Science, CAAS, Beijing 100094, China;
    2.Beijing Forestry
    University, Beijing 100094, China
  • Received:2008-08-13 Online:2009-06-20 Published:2009-06-20

Abstract: When different amounts of urea were applied to improve the degraded grassland, different species responded differently to the different concentrations. Fifty kg/ha of urea was the best concentration for increasing productivity and importance of Leymus chinensis in the grassland community, while 75 kg/ha was optimum for Phlomis tuberosa and 100 kg/ha for Potentilla acaulis. This shows that different concentrations of urea may be used to give some limited control of the structure of the degraded grassland plant community.

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