桉树林下间种黄豆和绿豆土壤理化性质研究  

Soil Physical and Chemical Properties in Eucalypt Plantations Intercropped with Soybean and Mung Bean

作　　者：刘云 钟莉传 王建忠 余江敏 张慧娜 王萱 祁彪 LIU Yun;ZHONG Lichuan;WANG Jianzhong;YU Jiangmin;ZHANG Huina;WANG Xuan;QI Biao(Guangxi Vocational University of Agriculture,Nanning 530001,Guangxi,China;Guangxi State-owned Dongmen Forest Farm,Fusui 532108,Guangxi,China)

机构地区：[1]广西农业职业技术大学,广西南宁530001 [2]广西国有东门林场,广西扶绥532108

出　　处：《桉树科技》2023年第2期41-46,共6页Eucalypt Science & Technology

基　　金：广西农业职业技术大学科学研究与技术开发项目《桉树人工幼林林下宜种间作物筛选及生长适应性研究》(YKJ2113)。

摘　　要：为探明桉树林下间种黄豆和绿豆土壤理化性质差异,为南亚热带地区桉树人工幼林林下宜种的间作物筛选及生长适应性研究提供科学依据。以林下间种黄豆和绿豆的桉树林为研究对象,对不同林地土壤容重、有机质等土壤理化性质进行分析。结果表明:相较于纯林,间作林在土壤理化性质上存在显著优势,其中桉树-黄豆间作林和桉树-绿豆间作林的土壤容重分别优于纯林22.2%和12.6%,最大持水量、毛管持水量和田间持水量分别优于纯林29.8%和27.3%、57.8%和52.9%、63.3%和59.2%,孔隙度、非毛管孔隙度和总孔隙度分别较纯林高18.3%和13.9%、73.5%和60.2%、21.6%和16.6%;pH值分别比纯林高15.4%和12.3%,碱解氮、有效磷和有效钾含量分别较纯林高75.3%和24.7%、35.2%和18.8%、11.9%和8.9%,有机质含量分别比纯林高8.7%和10.8%,全氮分别比纯林高23.4%和30.9%,而间作林与纯林间的全磷和全钾含量无显著性差异。桉树人工林与豆科作物间作,能够显著改善土壤理化性质,提高土壤透气性、透水性及保水能力,降低土壤酸性,提高有机质、全氮、速效氮、速效钾和速效磷含量,更有利于土壤水源涵养和土壤肥力提升。This study was carried out to explore differences of soil physical and chemical properties between soybean and mung bean interplanted under eucalypt plantations,and to provide a scientific basis for the selection of crops suitable for intercropping in such plantations in southern subtropical areas.For this,soybean and mung bean were interplanted under eucalypt plantations and then 15 physical and chemical property parameters,such as bulk density and organic matter,were evaluated at different soil depths.Compared with pure eucalypt plantations,intercropped plantations had significant advantages in soil physical and chemical properties.The soil bulk density of eucalypt×soybean intercropping and eucalypt×mung bean intercropping were superior to those of pure eucalypt plantations by 22.2%and 12.6%respectively.The maximum water holding capacity,capillary water holding capacity and field water holding capacity,porosity,non-capillary porosity,total porosity,pH values,contents of available N,P and K,soil organic matter,and total nitrogen were 29.8%and 27.3%,57.8%and 52.9%,63.3%and 59.2%,18.3%and 13.9%,73.5%and 60.2%,21.6%and 16.6%,15.4%and 12.3%,75.3%and 24.7%,35.2%and 18.8%,11.9%and 8.9%,8.7%and 10.8%,23.4%and 30.9%higher than those of pure eucalypt plantations respectively.However,there were no significant differences between intercropped plantations and pure plantations in total soil P and total K contents.This study showed that intercropping eucalypt plantations with leguminous crops can significantly improve soil physical and chemical properties,improve soil permeability,water permeability and water holding capacity,and reduce soil acidity,while increasing soil organic matter contents,total nitrogen,available nitrogen,available potassium and available phosphorus.Overall,it was concluded that intercropping is more conducive to soil water conservation and maintenance of soil fertility.

关 键 词：桉树 黄豆 绿豆 土壤理化性质 间种 

分 类 号：S714.2[农业科学—林学]