单 位：
山东农业大学资源与环境学院;山东农业大学作物生物学国家重点实验室
关键词：
控氮比;掺混肥;运筹方式;土壤硝态氮;氮素利用率
摘 要：
通过田间试验研究方法,研究了不同控氮比掺混肥(非控、半控和全控)和运筹方式(基施、基施和追施结合)对土壤硝态氮、玉米产量和氮素利用率的影响。研究结果表明:控氮比52.5%掺混肥在基施的运筹方式下,不仅有利于玉米生育前期对土壤硝态氮的需要,而且满足其后期氮素供应,也能降低其在田间土壤中的累积残留,并能达到高产稳产,与其他控氮比掺混肥和运筹方式相比其增产幅度在6.45%～19.70%之间,提高氮素利用率最高能达到65.38%,是玉米种植实践中最佳控氮比掺混肥和运筹方式。
译 名：
Effects of Bulk Blend Fertilizers with Different Nitrogen Ratios and Application Modes on NO_3~--N in Soil and N Fertilizer Use Efficiency of Maize
作 者：
ZHAO Jie1,SONG Fu-peng1,2(1.College of Recourses and Environment,Shandong Agricultural University,Taian 271018;2.State Key Laboratory of Crop Biology,Shandong Agricultural University,Taian 271018)
关键词：
ratio of controlled-release nitrogen;bulk blend fertilizers;application modes;NO-3-N in soil;N fertilizer use efficiency
摘 要：
A field experiment was conducted to study the effects of different ratios of controlled-release nitrogen in bulk blend fertilizers and N application modes on NO-3-N in soil,yield of maize and N fertilizer use efficiency.The results showed that the release of the 52.5% ratio of controlled-release bulk blend fertilizers in basal application mode accorded with requirement of maize better than the other treatments.The 52.5% ratio of controlled-release bulk blend fertilizers in basal application mode reduced nitrate nitrogen content in the soil.Compared to the other applied fertilizers treatments,it increased maize yield by 6.45%～19.70%.It enhanced fertilizer N use efficiency,the highest by 65.38%.Therefore,for the sake of increasing maize yield,enhancing fertilizer N use efficiency,it was the best ratio of controlled-release nitrogen and application mode.
