山东农业科学2016，Vol.48Issue(4)：61-65,5.DOI:10.14083/j.issn.1001-4942.2016.04.015
施磷量对高产夏玉米产量和磷素利用的影响
Effects of Phosphorus Fertilization on Yield and Phosphorus Use Efficiency of High -Yielding Summer Maize
摘要
Abstract
With the improvement of yield and planting density,the phosphorus (P)absorption,utilization and allocation of summer maize (Zea mays L.)has been changed a lot.This study is to explore the P absorption and utilization characteristics and the regulation effects of phosphorus application rates,which is expected to provide theoretical references for high -yielding and efficient production of summer maize in the Huang -Huai -Hai Plain.Two hybrids,Zhengdan 958 (ZD958)and Denghai 618 (DH618),were used as experimental materials,and four phosphorus (P2 O5 )application rates,0,45,90 and 135 kg/hm2 ,were designed for this ex-periment.The results showed that with the increase of P application rate,the grain yield increased firstly and then decreased gradually,and the partial fertilizer productivity,agronomy efficiency and absorption efficiency of phosphorus presented down trend.However,the harvest indexes of different treatments were not significantly dif-ferent.The grain yield under the application rate of 90 kg P2 O5 per hectare increased by 7.95% ~18.31% com-pared to no P fertilization.To produce 100 kilogram grains,1.54 kg of P2 O5 was needed for ZD958,while 1.45 kg of P2 O5 was needed for DH618.In conclusion,under the experiment conditions,the optimum phosphorus ap-plication rate was 90 kg P2 O5 per hectare for higher grain yield and P use efficency.关键词
夏玉米/产量/施磷量/磷肥利用效率Key words
Summer maize/Grain yield/Phosphorus application rate/Phosphorus fertilizer use efficiency分类
农业科技引用本文复制引用
刘凯,张吉旺,郭艳青,裴书君,董树亭,刘鹏,杨今胜,赵斌..施磷量对高产夏玉米产量和磷素利用的影响[J].山东农业科学,2016,48(4):61-65,5.基金项目
国家自然科学基金项目（31271662）；山东省现代农业产业技术体系建设项目（SDAIT －01－022－05）；山东省玉米育种与栽培技术企业重点实验室开放课题 （）
