Screening of KSB in red soil of Poyang lake area and potassium solubilizing study

摘要

29 strains of KSB(potassiutn solubilizing bacteria) were sampled from red soil of Poyang Lake area of Jiangxi province in China. Potassium solubilizing screening and temperature and pH tolerate experiments were conducted in red soil medium: 5 strains include K10, K12, K14, K16,K29 with better potassium solubilizing ability were screened. Further study shows K16 performs better at low temperature of l5-25°C, while K12 keeps active at a temperature of 40°C, All strains show biggest potassium solubilizing ability at pH6.5 except K10 at pH5.5. And K10 stays active at a low pH of 3.5-5.5.