紫花苜蓿对草炭改良露天矿表土替代材料的响应  

The Response of the Peat Improved Open Pit Mine Topsoil Alternative Materials for Medicago Sativa

作　　者：位蓓蕾[1] 胡振琪[1] 张建勇[1] 曾纪勇[1] 蒋知栋[1] 

机构地区：[1]中国矿业大学(北京)土地复垦与生态重建研究所,矿山生态安全教育部工程研究中心,北京100083

出　　处：《农业环境科学学报》2013年第10期2020-2026,共7页Journal of Agro-Environment Science

基　　金：中央高校基本科研业务费专项资金项目(2010YD03)

摘　　要：为探讨添加草炭对露天矿表土替代材料的改良效果,以紫花苜蓿为试材,草炭为改良剂,研究了草炭添加量分别为0、10、30、50 g·kg-1(干土)与表土替代材料配合施用对紫花苜蓿生长性能及抗逆性能的影响。试验结果显示,添加草炭对紫花苜蓿生长期内的株高、生长率、生物量、叶片SPAD值、叶片的细胞膜透性、超氧化物歧化酶(SOD)活性、过氧化氢酶(CAT)活性、过氧化物酶(POD)活性及可溶性蛋白含量等指标均有显著影响(P<0.05)。草炭施用量为10 g·kg-1(干土)时,紫花苜蓿的株高、生长率、地上及地下部分的生物量、叶片SPAD峰值均高于其他处理,叶片细胞膜透性、SOD酶活性、CAT酶活性、POD酶活性及可溶性蛋白等抗逆性指标也显著优于其他处理,所以,当草炭施用量为10 g·kg-1(干土)时改良效果最佳。To research the improvement effect of the peat for the topsoil alternative materials, this paper takes Medicago sativa and uses peat as the selected crop and amendment, respectively, and researches the effect of the growth performance and stress resistance for the Medicago sativa with the combination of topsoil alternative materials and different added content, which at 0, 10, 30, 50 g peat ＂kg-~ soil. The results shows that the indexes of height growth, growth rate, biomass, leaf SPAD value, cell membrane permeability, SOD activity, POD activity, soluble protein are greatly influenced by using the new topsoil alternative materials with peat（P〈0.05 ）. Additionally, the indexes of height growth, growth rate, biomass, leaf SPAD value are higher than the other treatments with the added content at 10 g peat. kg-L Moreover, the indexes of the cell membrane permeability, SOD activity, POD activity, soluble protein are significantly improved compared with the other treatment.

关 键 词：排土场复垦 表土替代材料 草炭 

分 类 号：X53[环境科学与工程—环境工程]