<正>对福建含笑纯林和混交林进行造林试验，研究了５年生不同造林模式的林分生物量和培肥土壤能力。结果表明，福建含笑和杉木行间混交林具有较高的林分总生物量和乔木层生物量（８５．４８ｔ／ｈｍ２、７８．４８ｔ／ｈｍ２），而杉木纯林和乔木层总生物量均最低，仅为５２．０４ｔ／ｈｍ２和４３．０４ｔ／ｈｍ２。行间混交模式的土壤团聚体最好，结构破坏率小，土壤容重下降；土壤孔隙度和土壤通气度增大，分别比杉木纯林大１４．５％和３．６６％。行间混交林土壤有机质、氮、磷、钾含量明显高于杉木纯林，土壤酶活性明显加强，更有利于林木生长。

The biomass and soil fertility of different patterns of the mixed stands of Michelia fujiansis and Chinese fir at the fifth year were investigated  The results showed that the biomass of intercropping was higher （8548 t／hm2），the biomass of arbor was also higher （7848 t／hm2） Chinese fir only had lowest biomass of stand and arbor （5204 t／hm2 and 4302 t／hm2） Reunification and soil structures of the intercorpping presented better characters， soil bulk density decreased The porosity and the air flowing increased by 145％ and 36％ The content of soil nutrients， organic matter， N，P and K rised obviously