【摘要】 经过8年(1983—1991)的试验研究,证明在强度疏伐的马尾松中龄林下混交火力楠是相宜的。既缓解种间营养空间竞争的矛盾,促进了林木的生长;又有利于林地改良。使混交林地的土壤微生物总数、呼吸代谢强度、酶活性、土壤孔隙度、持水量和养份元素含量都高于马尾松纯林。更多还原

【Abstract】 Based on experiment researches from 1983 to 1991, the result show that the mix- ing Michelia macclurei in selective-cutting intensely middle-age forest of pinus massoniana is suitable each other. It solve the contrdic- tory of interspecific competed and promote forest growing, also improve forest land. The quantj- ty of microorganisms, respiratory intensity, enzymes activty, water--physical characteristic and the content of soil nutrient elements in mixed forest are higher than pure.forest of pinus massoni- ana.更多还原