水土保持学报2017，Vol.31Issue(6)：242-248,271,8.DOI:10.13870/j.cnki.stbcxb.2017.06.038
生物质炭和果胶对再生水灌溉下玉米生长及养分、重金属迁移的影响
Different Effects of Biochar and Pectin on Maize Growth, Nutrient and Heavy Metals Migration Irrigated by Reclaimed Water
摘要
Abstract
Rhizobox culture method was employed to investigate the effects of biochar and pectin on nutrient and heavy metals migration in soil-plant system irrigated by reclaimed water.The results showed that reclaimed water irrigation did harm to the plant growth.Plant grew better in pectin treatments than biochar though there was no significant difference between the both.When irrigated with reclaimed water,the shoot biomass in pectin treatments were 59.32％ higher than CK.Compared with distilled water irrigation,reclaimed water irrigation increased the soil pH.When the irrigation water was same,the soil pH of pectin treatments was a little lower than the biochar treatments.Both the biochar and pectin treatments raised the soil nutrient contents,and pectin performed better for the increase in soil available nitrogen,available phosphorous and organic matter,while biochar resulted in the higher increase in soil available potassium.Biochar enhanced the plant nutrient contents,and pectin improved the transport capacity of nutrients.Bichoar decreased the soil available Fe,Mn,Cu,and Ni contents,but pectin increased the soil available Fe,Mn,Cu,Pb,Ni contents.The heavy metals contents in plant roots under pectin treatments were generally higher than that of biochar treatments.Take the distilled water irrigation for example,the Fe,Mn,Cu,Zn,Pb,Cd,Ni contents in plant roots of pectin treatments were 165.29％,113.01％,21.16％,92.74％,14.61％,26.86％ and 53.43％ higher than that ofbiochar treatments.Fortunately,the translocation factors of Cu,Zn,Pb,Cd,Ni in pectin treatments were lowest.This study could provide the theoretical basis for the agricultural safe utilization of biochar and pectin in north alkaline soil with reclaimed water irrigation.关键词
再生水/生物质炭/果胶/植物生长/养分/重金属Key words
reclaimed water/biochar/pectin/plant growth/nutrient/heavy metals分类
农业科技引用本文复制引用
刘源,崔二苹,李中阳,杜臻杰,高峰,樊向阳..生物质炭和果胶对再生水灌溉下玉米生长及养分、重金属迁移的影响[J].水土保持学报,2017,31(6):242-248,271,8.基金项目
国家自然科学基金项目(41701265) （41701265）
河南省科技攻关计划项目(172102110121) （172102110121）
中央级科研院所基本科研业务费专项(中国农业科学院农田灌溉研究所)(FIRI2016-13、FIRI20l7-14) （中国农业科学院农田灌溉研究所）
“十三五”国家重点研发计划项目(2017YFC0403503) （2017YFC0403503）
中国农业科学院科技创新工程:国家自然科学基金项目(51479201) （51479201）
