套种华盖木、亮叶木莲、红豆杉对杉木生长和土壤理化性质的初期影响  

Initial Effects of Interplanting Taxus baccata Linn,Manglietiastrum sinicum,Manglietia lucida on Growth of Chinese Fir and Soil Physicochemical Properties

作　　者：刘涛 左秋玉 杨梅[2] LIU Tao;ZUO Qiuyu;YANG Mei(Guangxi Gaofeng State-owned Forest Farm,Nanning 530001,China;College of Forestry,Guangxi University,Nanning 530004,China)

机构地区：[1]广西国有高峰林场,广西南宁530001 [2]广西大学林学院,广西南宁530004

出　　处：《北华大学学报（自然科学版）》2020年第4期532-536,共5页Journal of Beihua University（Natural Science）

基　　金：广西创新驱动发展专项(桂科AA17204087-8);国家重点研发计划项目(2017YFD0601101-2).

摘　　要：以杉木间伐后补植珍贵树种华盖木、亮叶木莲、红豆杉的混交林为研究对象,分析杉木纯林与混交林生长及林地土壤理化性质、土壤酶活性.结果表明:3种混交类型提高杉木生长因子的程度依次为杉木×华盖木>杉木×亮叶木莲>杉木×红豆杉.杉木×华盖木可以显著提高土壤中全氮、全磷、全钾、水解氮含量及酸性磷酸酶、蔗糖酶、脲酶的活性;杉木×亮叶木莲可以提高全钾、水解氮含量及酸性磷酸酶、蔗糖酶活性;杉木×红豆杉对土壤改良效果较弱,但在全氮含量上仍显著高于杉木纯林.总体上看,木兰科树种与杉木异龄混交表现为互相促进的种间关系,有利于改良林地化学环境,对土壤持水量、孔隙度和通气性能的改善作用显著,有利于提高林地生产力,可为杉木人工纯林逐渐改造为异龄混交复层林提供参考.The rare tree species such as Taxus baccata Linn,Manglietiastrum sinicum,Manglietia lucida were introduced to establish the mixed,multi-storeyed forests in the thinned Cunninghamia lanceolate(Chinese fir)plantation.The growth increment of Chinese fir was ranked in descending order followed by the mixed plantations of Chinese fir and Anglietiastrum sinicum,Manglietia lucida and Taxus baccata Linn.The contents of total nitrogen,total phosphorus,total potassium,ammonia nitrogen,acid phosphatase,sucrase and urease were significantly increased in the mixed plantation of Chinese fir and Manglietiastrum sinicum.The contents of total potassium,ammonia nitrogen,acid phosphatase,and sucrase were increased in the two mixed plantations.The content of total nitrogen of the mixed plantations was significantly higher than that of pure Chinese fir plantation.On the whole,the two tree species of Magnoliaceae showed the mutual positive inter-species relationship with Chinese fir,which was beneficial to the improvement of forest soil environment and had significant effects on soil water capacity,porosity and aeration performance.These two reforestations may promote the productivity of woodland,provide more references for transforming the Chinese fir pure plantation to mixed plantation.

关 键 词：杉木 纯林 混交林 珍贵树种 土壤理化性质 

分 类 号：S725.2[农业科学—林木遗传育种]