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cje ›› 1985, Vol. ›› Issue (1): 51-51,64.

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The amount of earthworm in soils under artificial Pinus koraiensis forest

Chi Guiqing   

  • Received:1984-03-05 Online:1985-02-10

Abstract: Based on the field investigation, the relationship between the amount of earthworm in soils and the age and type of planted forest of Pinus koraiensis is discussed. The author indicates that in order to maintain ecological balance, its necessary to expand mixed coniferous (pinus koraiensis)-broad-leaved forest rather than pure.

Key words: Thrips palmi, Population growth, Distribution pattern, Sampling technique