利用ICP-AES测定不同施肥制度下玉米中Mn和Zn浓度与分配  

Determination of Concentrations and Distributions of Mn and Zn in Maize under Different Fertilization Regime Using ICP-AES

作　　者：马强[1] 朱先进[1] 徐永刚[1] 宇万太[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,辽宁沈阳110016

出　　处：《光谱学与光谱分析》2010年第12期3417-3420,共4页Spectroscopy and Spectral Analysis

基　　金：中国科学院创新项目(KZCX2-YW-407);国家"十一五"科技支撑计划课题项目(2008BADA7B08;2007BAD89B02);国家自然科学基金项目(40701067)资助

摘　　要：通过长期定位试验和室内ICP-AES分析测试,研究了不同施肥模式下作物体内Mn和Zn浓度与含量的变化。结果表明:(1)NPKM和NPK处理玉米体内Mn浓度显著高于M和CK处理;秸秆中Zn浓度CK最高,NPKM处理最低,各处理籽实中Zn浓度无显著差异。(2)玉米收获物中Mn和Zn含量随产量增加而提高,且与秸秆产量相关性优于籽实产量。(3)绝大部分Mn和近一半的Zn集中在秸秆中,且均衡施肥与有机无机配施有利于改善Mn和Zn在玉米体内分配,提高养分利用效率;采用秸秆还田等养分循环再利用措施,可实现农田微量元素可持续利用。A long-term field experiment and ICP-AES analysis were conducted to study concentration and content of micronutrients Mn and Zn in maize under different fertilization systems.The results were as follows：（1） Concentrations of Mn in maize under NPKM and NPK treatments were significantly higher than those in M and control treatments.The concentration of Zn in grain of maize was similar under different treatments.The control treatment had the highest concentration of Zn in stalk,while NPKM treatment had the lowest one.（2） Contents of Mn and Zn increased with increasing yields of maize,and the regression relationship between the contents and yield of stalk was better than that between the contents and yield of grain.（3） Most of Mn and almost half of Zn were concentrated in stalk.The distribution and use efficiency of micronutrients were optimized under NPKM and NPK treatments.Returning the stalk to soil is an effective strategy for micronutrients sustainable utilization in agro-ecosystem.

关 键 词：长期定位试验 MN ZN 玉米 浓度 分配 

分 类 号：S718.554.2[农业科学—林学]