4个玉米品种氮素利用效率的比较研究  

Comparison on N Utilization Efficiency of Four Maize Varieties

作　　者：颜军[1] 杨德光[1] 

机构地区：[1]东北农业大学,哈尔滨150030

出　　处：《玉米科学》2010年第2期91-95,共5页Journal of Maize Sciences

摘　　要：以郑单958、农大108、京单28、京科308为试验材料,研究了不同玉米品种产量、干物重、氮含量、氮利用效率的差异。结果表明:4个玉米品种产量、总吸氮量存在一定程度的差异,氮利用效率差异均不显著。植株干重、子粒氮含量、总吸氮量与产量显著相关,子粒氮含量对产量的直接影响最大。植株干重与子粒氮含量显著相关,植株干重越大子粒氮含量越高;子粒氮含量与植株干重对产量的影响不同品种之间存在差异;氮收获指数与产量呈负相关。The difference in the yield,biomass,N content and N use efficiency of four maize hybrids(Zhengdan958,Nongda108,Jingdan28 and Jingke308) were studied.The experiment was suggested that there were difference in the yield and plant total amount of N absorption among four maize hybrids,but the N utilization efficiency was just the opposite.There were obvious mutuality in the plant dry matter weight,grain N content and total amount of N absorption with yield,grain N content had maximal immediate effect to yield.T...

关 键 词：玉米 地上部干物重 子粒氮含量 氮利用效率 

分 类 号：S51[农业科学—作物学]