Long-term effects of manure and fertilization on soil organic matter and quality parameters of a calcareoussoil in NW China

Summary:Long-termapplicationsofinor-ganicfertilizersandfarmyardmanureinflu-enceorganicmatteraswellasothersoil-qualityparameters,butthemagnitudeofchangedependsonsoilclimaticconditions.Effectsof22annualapplications(1982～2003)ofN,P,andKinorganicfertilizersan ......（本文共 35127 字 ）     [阅读本文] >>