玉米苗期氮、磷、钾养分吸收利用效率研究  

Study on the Uptake and Utilization Efficiency of Nitrogen,Phosphorus and Potassium in Maize Seedling Stage

作　　者：赵霞[1,2] 杨豫龙 王浩然[1] 穆心愿 马智艳 唐保军[2] 刘天学[1] 李潮海[1] ZHAO Xia;YANG Yu-long;WANG Hao-ran;MU Xin-yuan;MA Zhi-yan;TANG Bao-jun;LIU Tian-xue;LI Chao-hai(College of Agronomy,Henan Agricultural University,Zhengzhou 450002;Cereal Institute,Henan Academy of Agricultural Sciences/Henan Provincial Key Lab.of Maize Biology,Zhengzhou 450002,China)

机构地区：[1]河南农业大学农学院,郑州450002 [2]河南省农业科学院粮食作物研究所/河南省玉米生物学重点实验室,郑州450002

出　　处：《玉米科学》2019年第4期154-161,166,共9页Journal of Maize Sciences

基　　金：国家重点研发计划项目(2017YFD0301103,2016YFD0300306);河南省玉米产业技术体系建设专项(S2010-02-04,S2015-02-04);公益性行业(农业)科研专项(201503130)

摘　　要：以黄淮海大面积种植的郑单958、先玉335、郑单538、豫单606、伟科702、郑单1002为试材,利用水培和大田试验相结合的方法,研究不同玉米品种苗期的氮、磷、钾吸收利用效率。结果表明,不同玉米品种对N、P、K养分积累存在差异,与NPK(全营养,对照)处理相比,NPK-N(氮胁迫,1/10的N含量)胁迫下N相对积累量(RNAA)最高的是郑单958;NPK-P(磷胁迫,1/10的P含量)胁迫下P相对积累量(RPAA)最高的是先玉335;NPK-K(钾胁迫,1/10的K含量)胁迫下K相对积累量(RKAA)最高的是豫单606。NPK胁迫显著提高玉米苗期对NPK的相对利用效率,其中,N提高2.91倍,P提高3.98倍,K提高6.16倍。Zhengdan958(ZD958),Weike702(WK702),Zhengdan1002(ZD1002),Xianyu335(XY335),Zhengdan538(ZD538)and Yudan606 were used as the experimental materials that were planted in large areas in Huanghuaihai.The nutrient solution test and field test were used to study the absorption and utilization efficiency of nitrogen,phosphorus,and potassium in different maize varieties at seedling stage.The results showed that there were differences in NPK accumulation between different maize varieties.Compared with NPK treatment,the highest relative nitrogen accumulation(RNAA)of maize seedlings under NPK-N stress was ZD958.Under the NPK-P stress,the highest relative phosphorus accumulation(RPAA)at seedling stage was XY335.The highest relative potassium accumulation(RKAA)at seedling stage under NPK-K stress was YD606.Under N,P and K stress,there were also genotype differences in NPK utilization efficiency of maize seedling stage.Nitrogen,phosphorus and potassium stress significantly increased the N,P and K utilization efficiency of maize seedlings.Nitrogen stress increased N relative utilization efficiency by 2.91 times,phosphorus stress increased the relative utilization efficiency of phosphorus by3.98 times,and potassium stress increased potassium relative use efficiency by 6.16 times.

关 键 词：玉米 利用效率 氮磷钾胁迫 

分 类 号：S513.062[农业科学—作物学]