生活污水与铜和铅对黄瓜种子萌发及其幼苗生长的影响  

Effects of Domestic Sewage and Cu,Pb on Seed Germination and Seedling Growth of Cucumber

作　　者：王婷婷[1] 臧淑艳[1] 马原[1] 尹利利[1] 房志浩 卜新雅 

机构地区：[1]沈阳化工大学应用化学学院,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2015年第2期107-112,共6页Journal of Shenyang University of Chemical Technology

基　　金：国家自然科学基金(40803037);辽宁省高等学校杰出青年学者成长计划(LJQ2011041);辽宁省自然科学基金项目(201202176;20092054);沈阳市科技计划项目(F12-277-1-84)

摘　　要：通过水培实验研究生活污水及铜和铅污染对黄瓜种子萌发及幼苗生长的影响.实验所设Cu2＋质量浓度范围为25~300 mg/L,Pb2＋质量浓度范围为100~500 mg/L.结果表明：低质量浓度的Cu2＋、Pb2＋溶液对种子生长无明显抑制效果,生活污水对黄瓜种子株高具有一定的促进作用,对根长则呈抑制作用.其中,低质量浓度（≤50 mg/L）的Cu2＋溶液以及低质量浓度（≤200 mg/L）的Pb2＋溶液均对黄瓜种子的萌发无明显抑制作用,黄瓜种子的发芽率、发芽势、发芽指数、活力指数、植株鲜质量均高于其他质量浓度.但随着Cu2＋、Pb2＋质量浓度的增加,对各项生长指标的抑制作用增强,且呈负相关.A solution-culture experiment was carried out to explore effects of domestic sewage and Cu,Pb pollution on seed germination and seedling growth of cucumber. The experiment designed the Cu2 ＋concentration in the range of 25 ~ 300 mg / L,and the Pb2 ＋concentration in the range of 100 ~ 500 mg / L.The results showed that lowconcentrations of Cu2 ＋,Pb2 ＋solutiondid did not have significant inhibitory effect. The domestic sewage had a promoting role at stem length of cucumber,and had an inhibitory role at root length. The lowconcentration（ ≤50 mg / L） of Cu2 ＋and the lowconcentration（ ≤200 mg / L） of Pb2 ＋treatments did not have significant inhibition on the cucumber seed,and germination potential,germination index,vigor index,and plant fresh weight were higher than other concentrations. However,the inhibition on the growth index was strengthened with the increasing of concentration of Cu2 ＋and Pb2 ＋having a negative correlation.

关 键 词：生活污水 铜 铅 黄瓜 种子萌发 幼苗生长 

分 类 号：X523[环境科学与工程—环境工程]