Comparison on Adsorption and Ingression of Ralstonia solanacearum to Eucalyptus and a Nonhost Tree Influences of Temperatures,pH Values and Inoculum Concentrations on the Adsorption and Ingression of Ralstonia solanacearum to Eucalyptus urophylla× E. grandis Seedling Root Study on the Role of EPS and LPS of Ra lston ia solanacea rum in Euca lyptusu rophylla ×E. grandis Root Adsorption and Ingression