COMPARISON IN ENZYME ACTIVITIES BETWEEN THE SOILS IN RHIZOSPHERE AND NON-RHIZOSPHERE OF CUNNINGHAMIA LANCEOLATA(LAMB.)HOOK

The differences in the enzyme activities and chemical properties of the and non soils of Cunninghamia lanceolata were studied.The results showed that(1)pH value was lower in the soil in the than in the nonrhizosphere, while the content of organic matter,total N,total P, inorganic P, organic P, available N, K,Cu and Zn,exchangable Ca and Mg was significantly higher in the soil than in the non-rhizosphere soil at 0.05 or 0.01 level;(2) Acid and neutral phosphatase,urease,invertase,catalase,peroxidase activities were significantly higher in the soil than in the non -rhizosphere soil, and XR -XS value was successively 1.44,0.66,0.21,24.92,5.00.1. 01.Except that polyphenol oxidase activity was lower in the than in the non-rhizosphere soils, XR - XS value was -6. 80;(3)The effect of the growth of Cunninghamia lanceolata on soil enzyme activity was named rhizosphere effects.The degree of effects among soil enzyme activities was orderly invertase,urease,catalase, nuotral and acid phosphatase, peroidase, polyphenol oxidase and the R/S values were 3.10,2.74,2.03, 2.01, 1.91, 1. 44, and 0.47respectivelly.