期刊论文

中文

中国生态农业学报(中英文)

2096-6237

2012

20

10

1289-1294

10.3724/SP.J.1011.2012.01289

国家自然科学基金项目（31071851,30971860,31101596） 湖南省高校创新平台开放基金项目（10K034） 国家油菜产业技术体系栽培生理岗位和湖南省重大专项（2009FJ1006-1,3）资助

本校为第一机构

为探明影响油菜生长后期氮素再分配的生理因素及其与氮素利用效率的关系,本文在严格控制氮素供应水平的砂培条件下,采用~(15)N示踪技术研究了不同氮素水平下2个油菜品种吸收氮素后在体内的分配、转运及损失情况。结果表明,供试2个油菜品种的生物产量、籽粒产量、籽粒含氮量、植株全氮、籽粒全氮、收获指数和氮收获指数均存在较大差异,且以上差异因氮素水平不同而有所不同。常氮处理下,品种"742"的生物产量、籽粒产量、籽粒全氮、收获指数和氮素收获指数均高于品种"814";低氮处理下,品种"742"的植株含氮量、籽粒含氮量、收获指数和氮素收获指数高于品种"814",而生物产量、籽粒产量、植株全氮和籽...

This paper used 15N tracer method in sand culture conditions to determine the physiological factors of N redistribution and its relationship with N utilization efficiency.The paper also studied the differences in N distribution,transshipment and loss under different N levels in different N-efficient oilseed rape cultivars.The results showed that different N levels had different outputs in terms of biomass,grain yield,grain N content,plant N content,plant total N,grain total N,harvest index,accumulated N and N harvest index of selected oilseed r...