• 关键词：模拟N、P污水  过氧化物酶(POD)  超氧化物歧化酶(SOD)  同工酶  水稻

• 基金项目：国家自然科学基金

• 崔克辉
• 武汉大学生命科学学院植物科学系,430072

• 何之常
• 武汉大学生命科学学院植物科学系,430072

• 张甲耀
• 武汉大学环境科学系,430072

• 夏盛林
• 武汉大学环境科学系,430072

• 摘要：以水稻为材料,研究了不同浓度的模拟N、P污水对幼苗过氧化物酶(POD,EC1.11.1.7)和超氧化物歧化酶(SOD,EC1.15.1.1)及其同工酶等的影响,结果表明：在总氮浓度(Nr)为0-90mg/L和总磷浓度(P_T)为0-9mg/L范围内,POD与N、P浓度呈正相关,N_T超过90mg/L和P_T超过9mg/L这一阈值后呈下降趋势,NT在0-120mg/L和P_T在0-12mg/L范围内,SOD,丙二醛(MDA)与N

• Abstract：EHects of mimic wastewater on activities andisoenzyme of peroxdase(EC1.11.1.7POD)and superoxide dismutase(SOD, EC 1.15.1.1)were studied at various concentra-tions of nitrogen and phosphorus, The results showed that when N_T<90 mg/L and P_T<9mg/L, there were significant positive correlations between POD activity and the concentra-tion of N and P, while POD activity declined when N_T > 9 0 mg/L and P_T > 9 mg/L. SODactivity and content of malondialdehyde(MDA)were positively correlated to the concentra-tion of N and P significant.In addition, effects of N and P on heights of rice seedlings andcontents of soluble protein in their leaves were studied.The results indicated that heightsnegatively correlated to the concentration of N and P, and so did the contents of soluble pro-tein.

• Key words：mimic wastewater  nitrogen  phosphorus  peroxidase(POD)  superoxide dismutase(SOD)  isoenzyme  rice

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