乔灌草组合对碱化盐土改良效果的研究  

Effect of Shrub and Grass Combination on Improvement of Alkaline Saline Soil

作　　者：边荣荣 孙兆军[2] 何俊[3] BIAN Rongrong;SUN Zhaojun;HE Jun(College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia 750021;College of Resources and Environment, Ningxia University, Yinchuan, Ningxia 750021;Institute of Environmental Engineering Research, Ningxia University, Yinchuan, Ningxia 750021)

机构地区：[1]宁夏大学土木与水利工程学院,宁夏银川750021 [2]宁夏大学资源环境学院,宁夏银川750021 [3]宁夏大学环境工程研究院,宁夏银川750021

出　　处：《北方园艺》2018年第10期119-126,共8页Northern Horticulture

基　　金：国家林业公益性行业科研重大专项资助项目(201504402)

摘　　要：以乔木柽柳、紫穗槐、景天和马莲4种植物为试材,设置乔木柽柳+紫穗槐(T1)、乔木柽柳+紫穗槐+马莲(T2)、乔木柽柳+紫穗槐+景天(T3)3种乔灌草组合模式,采用野外调查与室内测试相结合的方法,研究了不同类型耐盐植物组合模式对土壤机械组成、pH、碱化度、含盐量、土壤有机质和养分,以及不同配置模式下植被生长特征的影响,以期找出最佳的配置模式,为甘肃盐碱地造林模式及树种的选择提供参考,同时为盐碱地的改良和土地可持续利用提供科学依据。结果表明:3种配置模式对土壤pH改良效果排序依次为T1>T2>T3;对土壤全盐改良效果排序依次为T3>T1>T2;对土壤碱化度改良效果排序依次为T1>T2>T3;对提高土壤肥力效果排序依次为T3>T2>T1;综合分析,对植物生长情况乔+灌+草模式优于乔+灌模式。Four species of plants were used as test materials,Tamarix chinensis,Amorpha fruticosa,Sedum spectabile and Lris lacteal Pall.var.chinensis（Fisch.）Koidz.Three kinds patterns of tree shrubs and grass were set,there were Tamarix chinensis＋ Amorpha fruticosa（T1）,Tamarix chinensis＋ Amorpha fruticosa ＋Iris lacteal Pall.var.chinesesis（Fisch.）Koidz（T2）,Tamarix chinensis＋Amorpha fruticosa＋Sedum spectabile（T3）.The combination of field investigation and indoor testing were used,the effect of the combination of different types of salt-tolerant plants were studied,involving mechanical composition,pH,ESP,salt content,organic matter and nutrients of soil,and the characteristics of vegetation growth under different patterns,in order to find the best configuration model,to provide references for afforestation model and selection of tree species in saline-alkali land in Gansu Province,and to provide scientific basis for the improvement and sustainable use of saline-alkali land.The results showed that the effect of three kinds of configuration modes on the soil pH improvement was T1〉T2〉T3;the order of improvement total salt of soil was T3〉T1〉T2;the order of improvement alkalinity of soil was T1〉T2〉T3;the order of improvement fertility of soil was T3〉T2〉T1;the plant growth of the pattern of tree＋shrub＋grass was better than that of tree＋shrub.

关 键 词：碱化土 组合模式 土壤理化性质 植被生长 

分 类 号：S156.4[农业科学—土壤学]