Rhizosphere and non-rhizosphere soil properties analysis of Cunninghamia lanceolata

Determination the quantity of soil microorganism,chemical properties、enzyme activity of 1-year,4-years,10-years,18-years,32-years Chinese Fir was carried out.The results indicate: with the age growth of Cunninghamia lanceolata,microorganism amount exhibited a trend of low-high-low,the rhizosphere soil microorganism quantity was higher than that of the non-rhizosphere soil;with the age growth of Cunninghamia lanceolata,pH values of soils decreased,organic matter increased;the rhizosphere soil pH values were lower than that of the non rhizosphere soil,the rhizosphere soil organic matter quantity was higher than that of the non-rhizosphere soil.With the age growth of Cunninghamia lanceolata,hydrolysable nitrongen,available phosphorus,available potassium exhibited a trend of low-high-low,the rhizosphere soil hydrolysable nitrongen and available phosphorus quantity were higher than that of the non-rhizosphere soil,the rhizosphere soil available potassium quantity was higher than that of the non-rhizosphere soil.Along with the age growth of Cunninghamia lanceolata,enzyme activity of soil exhibited a trend of low-high-low,the rhizosphere soil quantity was higher than that of the non rhizosphere-soil.