杉木多代连栽林地营造杉阔混交林后的土壤肥力变化  

Change of Soil Fertility of the Forest Land in Which Mixed Forest of Cunninghamia lanceolata and Broad-leaved Trees Was Constructed After Continuous Planting Cunninghamia lanceolata

作　　者：林同龙[1] 

机构地区：[1]福建省南平市林业委员会,南平353000

出　　处：《浙江林业科技》2000年第2期23-25,42,共4页Journal of Zhejiang Forestry Science and Technology

摘　　要：在３代杉木采伐迹地上营造杉阔混交林的林地土壤孔隙状况、水分状况和养分状况优于继续营造杉木 纯林，且以表层土壤尤为明显。土壤表层容重杉阀阔混交林的比杉木纯林减少６．８７％；土壤贮水量比杉木纯林增 加３．６１％；土壤表层的非毛管孔隙度比杉木纯林高３．３１％；土壤表层的有机质、全氮、水解性氮、速效性磷和 速效性钾含量分别比杉木纯林增加１８．９８％、２４．７３％、１８．７５％、１６．６０％、１０．８７％和５．７０％，其中又以全氮的增 加尤为明显。因此，营造杉阔混交林或轮栽阔叶树，特别是与固氮树种混交，是防止杉木多代连栽林地地力 衰退的有效途径。Soil pore moisture and nutrient of the forest land in which mixed forest of Cunninghamia lanceolata and broad-leaved trees were constructed after the pure forest of Cunninghamia lanceolata was felled,were better than those of the forest land in which the pure forest of Cunninghamia lanceolata was constinously planted.Thus, construction of mixed forest of Cunninghamia lanceolata with bread-leaved trees,particularly with nitrogenfixing trees,was a effective measure to prevent decrease of the soil fertility of the forest land where the Cunningh amia lanceolata had been ever continously planted.

关 键 词：杉阔混交林 杉木纯林 土壤肥力 多代连栽林 更新 

分 类 号：S791.270.2[农业科学—林木遗传育种] S714.8[农业科学—林学]