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cje ›› 1992, Vol. ›› Issue (3): 8-12.

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Fruitage of Larix gmelinii in 1989 in Tuqiang Forestry Bureau Jurisdiction Area of the Greater Xingan Mountains

Xu Zhenbang1, Dai Hongcai1, Chen Hua1, Shan Jianping1, Dai Limin1, Shao Chunhai2, Yang Shanxun2   

  1. 1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015;
    2. Tuqiang Forestry Bureau of the Greater Xingan Mountains, Heilongjiang Province 165301
  • Received:1991-07-02 Revised:1991-08-09 Online:1992-06-10

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Abstract: Researches on the fruiting pattern and its fluctuation of Larix gmelinii have great significance in seed collection and forest regeneration.As the investigations indicate,the fruitage of Larix gmelinii in 1989 is in mid-level.For trees with dbh over 16cm,60% are fruited.The fruiting rate and seed production increase with increasing dbh,and for trees with dbh over 24cm,they are significantly greater.Serious seed infestations by insect pests are also found .The period of seed dispersal is quite short.It begins at the first ten days and ends at the last ten days of September.

Key words: water-saving irrigation,  , chestnut, growth and fruiting； drought hilly land