组配改良剂对铅胁迫萝卜营养品质及铅积累的影响  

Effects of combined modifier on nutritional quality and lead accumulation of radish under lead stress

作　　者：胡丽萍[1,2] 周国兴 刘光敏 王亚钦[1] 何洪巨[1] HU Liping;ZHOU Guoxing;LIU Guangmin;WANG Yaqin;HE Hongju(Beijing Vegetable Research Center,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China;Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(North China),Beijing 100097,China;Beijing Hengyuan Jiada Science&Technology Co.Ltd.,Beijing 100080,China)

机构地区：[1]北京市农林科学院蔬菜研究中心,北京100097 [2]农业部华北地区园艺作物生物学与种质创制重点实验室,北京100097 [3]北京恒源嘉达科技有限公司,北京100080

出　　处：《浙江农业学报》2018年第4期592-599,共8页Acta Agriculturae Zhejiangensis

基　　金：北京市农委资助项目(20120129);北京市农林科学院科技创新能力建设专项(KJCX20170102;KJCX20170302)

摘　　要：为明确组配改良剂对铅污染土壤的修复效果,以萝卜为实验材料,通过盆栽方法研究了施用不同浓度组配改良剂(0、600、900和1 200 mg·kg^(-1))对800、1 200 mg·kg^(-1)两种浓度铅处理土壤有机质含量、p H值、微生物种群数量、萝卜肉质根铅积累量及营养品质的影响。结果表明,施用900 mg·kg^(-1)组配改良剂后,800、1 200 mg·kg^(-1)两种浓度铅处理土壤有机质含量分别增加了21.32%和25.35%,且显著提高土壤细菌、放线菌数量和微生物总量,但对土壤p H无显著影响。施用900 mg·kg^(-1)组配改良剂可使两种浓度铅处理下萝卜肉质根的铅含量分别降低20.35%和27.69%,并显著提高萝卜肉质根维生素C、可溶性糖含量和干物质量。说明组配改良剂可显著提升铅污染土壤萝卜的食用安全性和营养品质。In order to verify the remediation effect of the combined modifier on lead polluted soil,pot experiments were used to study the effects of different concentrations of modifiers(0,600,900 and 1 200 mg·kg-1)on soil organic matter content,pH,microbial community structure,lead accumulation and nutritional quality of the radish(Raphanus sativus L.)planted in two levels of lead polluted soil(800 mg·kg-1 and 1 200 mg·kg-1).The results showed that after applying 900 mg·kg-1 modifier,the organic matter contents of the 800 mg·kg-1 and 1 200 mg·kg-1 of the lead polluted soil increased by 21.32%and 25.35%,respectively.In addition,the bacterial quantity,actinomycetes quantity,and total microorganism amounts of the two levels of the lead polluted soil significantly increased.However,applying the combined modifier had no significant effect on the pH of the soil.Moreover,after applying 900 mg·kg-1 combined modifier,the lead contents in the fleshy root of the radish planted in the 800 mg·kg-1 and 1 200 mg·kg-1 of lead polluted soil decreased by 20.35%and 27.69%,respectively.Furthermore,the contents of vitamin C,soluble sugar,and dry matter of radish were largely improved.These data indicated that the security and nutritional quality of the radish planted in the lead polluted soil were obviously improved comparing with no modifier application.

关 键 词：萝卜 铅 重金属 改良剂 营养品质 

分 类 号：S631.1[农业科学—蔬菜学]