Successive Planting Generations of Cunninghamia lanceolata: Soil Enzyme Activity and Growth

doi:10.11923/j.issn.2095-4050.cjas18080017

Abstract

Abstract: The paper aims to study the effects of successive planting on the growth and soil enzyme activities of Cunninghamia lanceolata. We compared the growth characteristics of the first (G1), second (G2) and third (G3) generation of C.lanceolata by the methods of space-for-time, the correlation and path analysis and analyzed the effects of soil enzyme activities on the growth of C.lanceolata and its mechanism. The results showed that: with the increase of planting generations, the growth of C.lanceolata showed a decreasing trend; the urease activity of G1, G2, G3 and CK decreased significantly with the soil depth (P<0.05); the activities of phosphatase and catalase had strong direct effects on the DBH and height growth of C.lanceolata; the path coefficients were 1.115 and 1.085, respectively. Soil enzyme activities and the growth of C.lanceolata decrease with the successive planting, and the growth of C.lanceolata is greatly influenced by phosphatase and catalase activity.

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References

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