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cje ›› 1997, Vol. ›› Issue (6): 12-16,21.

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Effects of Replant Soil on the Growth of C. lanceolata Seedlings

Ma Yueqiang1, Liao Liping1, Yang Yuejun1, Wang Silong1, Gao Hong1, Chen Chuying1, Lin Gengyou2   

  1. 1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015;
    2. Huitong Forest Institute, Huitong Country 418307
  • Received:1996-11-12 Revised:1997-07-22 Online:1997-12-10

Abstract: Effects of water extracts of soil collected from replant woodlands of C.lanceolata (first rotation, second rotation) and mixed plantation soil of C.lanceolata and Michelia on the growth of C.lanceolata seedlings were studied. The results indicated that some allelopatic substances existed in replant soil of C.lanceolata. Extracts of replant soil significantly inhibited the growth of C.lanceolata seedlings,and reduced chlorophyll contents, length, numbers and weight per cm of new branches(p<0.05). The residues of decomposed root might be one of the possible resources of allelopatic substances in replant soil. The mixed plantation of C.lanceolata and Michelia could reduce the toxicity of allelopatic substances on the growth of the C.lanceolata seedlings.

Key words: lowly efficient forest, land fertility degradation, soil arthropod, biodiversity, Pinus massoniana