废塑料再生产品对生菜种子萌发及根伸长影响  

Effect of Waste Plastics Recycling Products on Seed Germination and Root Elongation of Lettuce

作　　者：陈海燕[1] 海热提[1] 

机构地区：[1]北京化工大学环境科学与工程技术中心,北京100029

出　　处：《环境科学与技术》2010年第9期10-14,共5页Environmental Science & Technology

基　　金：国家"十一五"重大科技支撑计划课题(2007BAC16B03)

摘　　要：通过室内培养试验研究了三种废塑料再生产品对生菜种子萌发及根伸长的影响。结果表明:在生菜种子发芽阶段,再生塑料和再生建材对生菜种子发芽率影响都不大,但低浓度的再生油就已对生菜种子发芽率产生了很大的抑制效应,如500mg/kg处理时,发芽率为对照的61.5%,极显著地低于对照(P<0.01)。在生菜生长阶段,随着废塑料再生产品处理浓度的增加,对生菜根长和芽长的抑制作用都呈上升趋势。其中,再生塑料和再生建材对生菜种子发芽率及根、芽长受抑制的敏感性依次为根长>芽长>发芽率,而对于再生油,根、芽长受污染胁迫抑制明显,当污染浓度为15000mg/kg时,根长抑制率已达到了67.1%±2.1%,芽长抑制率高达77.8%±2.2%,三项指标对再生油胁迫的敏感性则表现为发芽率>芽长>根长。Effects of 3 kinds of reclamation of waste plastics on lettuce seed germination and root elongation were studied by indoor cultivation experiment. Results showed that in the stage of seed germination,regenerated plastics and regenerated tignum had no significant effect on germination rates of lettuce seed. But the germination rates of lettuce seed was markedly inhibited under low concentration of regenerated oil. With 500mg/kg treatment,the germination rate was far less than the contrast,just 61.5%. In the ...

关 键 词：再生塑料 再生油 再生建筑材料 生菜 种子萌发 根伸长 抑制率 

分 类 号：X503.23[环境科学与工程—环境工程]