核农学报2013，Vol.27Issue(1)：126-131,6.
施钾对花生积累氮素来源和产量的影响
EFFECTS OF POTASSIUM APPLICATION ON THE ACCUMULATED NITROGEN SOURCE AND YIELD OF PEANUT
摘要
Abstract
Pot experiments and were carried out respectively to study the effects of different potassium application on soil nitrogen uptake, fertilizer nitrogen uptake, nodule nitrogen fixation and their proportion and yield of peanut (Arachis Hypogaea L. ) by 15 N tracer technique, and explore the reasons, which may provide a theoretical basis and technical guidance for peanut production in the scientific fertilizer application. Results showed that nitrogen in peanut all mainly accumulated in the kernel for different treatments of potassium fertilizer application. However, with increasing of potassium application, the increasing extent of nitrogen content of stems was the biggest during all the peanut organs, with nut shells the smallest. Properly increasing the amount of potassium can improve nitrogen content, 15 N abundance, nitrogen and N accumulation of every organ, and promote absorption and utilization three nitrogen-source especially with the most effect for the kernel biomass ( economic output). The ratio of fertilizer nitrogen, soil nitrogen and atmospheric nitrogen absorbed by peanut was respectively between 12. 37% - 13. 10% , 38. 29% - 45. 10% , and 42.53% -48.31% respectively. Properly increasing potassium fertilizer application improved the absorption ratio of fertilizer nitrogen and nodule nitrogen fixation, reduced the proportion of soil uptake and enhanced fertilizer nitrogen use efficiency. However, the influences of excessive application of potassium fertilizer decreased.关键词
花生/钾/氮/示踪技术/产量Key words
peanut (Arachis Hypogaea L. )/ potassium/ nitrogen/ tracer technique/ yield引用本文复制引用
王月福,康玉洁,王铭伦,赵长星..施钾对花生积累氮素来源和产量的影响[J].核农学报,2013,27(1):126-131,6.基金项目
国家自然科学基金项目(31271657),国家花生产业技术体系建设项目(Nycytx-19),农业科技成果转化资金项目(2011GB2C600010),山东省"泰山学者"建设项目"作物栽培学与育种学",山东省现代农业产业技术体系建设项目 （31271657）
