在马尾松采伐迹地分别营造火力楠杉木混交林、纯林，经过12年的经营，对不同林分的生长量、土壤理化性质等进行了调查对比。结果显示：火力楠杉木混交林能提高森林郁闭度、林分生长量、林木生长量、改善土壤肥力。火力楠杉木混交林郁闭度，分别比火力楠杉木纯林郁闭度大2．2％、3．3％，树高分别大1．0％、2．46％，胸径分别粗9．98％、25．73％，冠幅分别大8．19％、46．76％，枝条分别长9．15％、50．49％，枝下高分别高1．0％、18．75％，单株材积分别大23．53％、96．88％，蓄积量分别多16．94％、61．44％。林土壤理化性状 N 、P 、K ，分别比纯林增加2．26％、4．51％，3．64％、5．56％，1．72％、3．14％。%In pinus massoniana deforested respectively build fire nan cunninghamia lanceolata mixed forest and pure forest ,after 12 a management ,growth ,soil physical and chemical properties of different forest stand investigation contrast .Results showed :fire nan cunninghamia lanceolata mixed forest can improve the forest canopy density ,for‐est stand growth ,tree growth ,improve soil fertility .Fire nan cunninghamia lanceolata mixed forest canopy density , larger than the fire nan cunninghamia lanceolata canopy density respectively 2 .2% ,3 .3% ,tree height ,respectively , 1 .0% ,2 .46% ,diameter at breast height ,respectively ,9 .98% ,25 .73% ,crown breadth respectively 8 .19% , 46 .76% ,long branches respectively 9 .15% ,50 .49% ,1 .0% higher under branch height ,respectively ,18 .75% , individual volume ,respectively ,23 .53% ,96 .88% ,volume of more than 16 .94% ,16 .94% respectively .Forest soil physical and chemical properties of N , P ,K , than pure forest increased by 2 .26% and 2 .26% , respectively , 3 .64% ,5 .56% ,1 .72% ,3 .14% .
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