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Scientia Silvae Sinicae ›› 2006, Vol. 42 ›› Issue (9): 79-82.doi: 10.11707/j.1001-7488.20060915

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Analysis of the Main Inducing Factors of the Incidence of Sphaeropsis sapinea

Ye Jianren1,Liao Tailin1,2   

  1. 1.College of Forest Resources and Environment, Nanjing Forestry University Nanjing 210037; 2.Kunshan Entry-Exit Inspection and Quarantine Bureau Suzhou 215301
  • Received:2004-12-21 Revised:1900-01-01 Online:2006-09-25 Published:2006-09-25

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Abstract:

The data analysis of 277 plots in forest farms in southern China indicated the development of Sphaeropsis sapinea is affected by stand and site factors. The ecological model of the shoot blight of S. sapinea was established as follows:y=41.38 -16.56x11+5.08x21+18.62x31-3.78x41+19.94x51+7.32x61+4.27x62-4.06x71-10.56x72-13.88x73 . In this formula y represents forest disease index and x11 ～x73 represent ecological factors (levels). The partial correlations between the disease index and soil moisture, stand canopy density, stand age and slope lever are significant at P<0.01, and they are the main inducing factors of incidence of S. sapinea in the south of China. Suggestions and measures of ecological control by afforestation were proposed.

Key words: Sphaeropsis sapinea, condition of site, main inducing factor