
植物营养与肥料学报2016,22(6):1696-1700 Journal of Plant Nutrition and Fertilizer
doi: 10.11674/zwfy.16019 http:/www.plantnutrifert.org
氮肥深追可提高玉米对15N的吸收、分配及利用朱宝国",韩旭东",张春峰*,贾会彬,孟庆英",王图图",匡恩俊”
(1黑龙江省农业科学院佳木斯分院,黑龙江佳木斯154007;
2黑龙江省农业科学院土壤肥料与环境资源研究所,黑龙江哈尔滨150086)
摘要:【目的】利用"N示踪技术,探索不同追氮方式下玉米植株各组织器官氮素吸收、分配及氮素利用率的情况,为指导寒地玉米高产、高效施肥技术提供理论依据。【方法】试验以玉米品种德美亚3号为试验材料,设置不施氮肥(N0)、浅追施一次(S1)、深追施一次(D1)和深追施二次(D2)4个处理。分析了玉米氮素吸收、分配和利用特性,以及肥料贡献和残留。【结果】氮肥深追施处理玉米不同器官干物质积累量高于浅追,深追二次又显著高于一次(P<0.05);除茎外,深追二次玉米各器官氮素含量均显著高于其它处理(P<0.05):氨肥深迫主米各器官氮素积累量高于浅道,除茎和轴差异不显著外,根、叶和籽粒氮系积累量差异显著(P<0.05);深道处理"N标记氮素含量显著高于浅追(P<0.05),
、除穗轴外,其它器官闻差异达到显著水平(P<0.05):氢素深迫
15N在玉米根和籽粒分配率高于浅追,在叶和轴内的分配率相反:深追一次"N在茎中的分配率高于浅追,深迫二次则低于浅追。氮肥深追与浅追相比,氮素利用率分别显著提高了26.0%和14.1%(P<0.05);氮肥深追二次与一次相比差异也显著(P<0.05):土壤"N残留率深追二次和一次处理分别比浅追一次降低2.1%(P<0.05和 1.2%,氮素损失率分别减少了23.9%和12.9%(P<0.05),肥料氮素贡献率深追二次和一次分别提高了3.6%(P<0.05)和0.6%。【结论】氮肥深追可有效提高玉米的干物质积累、氮素吸收、分配及氮素利用率,降低土
壤氮素残留率,提高氮肥的贡献率,且氮肥深追二次好于一次深追迫。关键调:追氮方式;玉米;氮素吸收与分配:氮肥利用率
中图分类号:S156
文献标识码:A
文章编号:1008-505X(2016)06-169605
Improvementofnitrogenfertilizerdressingindeepsoilonabsorption
allocation and utilization of15N of maize
ZHU Bao-guo', HAN Xu-dong', ZHANG Chun-feng", JIA Hui-bin', MENG Qing-ying'
WANG Nan-nan',KUANG En-jun?
( I Jiamusi Branch, Heilongjiang Academy of Agricultural Sciences, Jiamusi, Heilongjiang J54007, China,
2 Institute of Soil Fertilizer and Emvironmenr Resource, Heilongjiang Academy of Agricultural Sciences, Harbin J50086, China ) Abstract: [ Objeetives ] Using the 'sN tracing technology, we analyzed effects of different nitrogen topdressing methods on absorption, distribution and utilization of nitrogen of maize in cold zone, and offered theoretical assistance to the reasonable fertilization of the maize. [ Methods J Maize cultivar Demeiya 3 was used as material in a field pot experiment, the field experiment was set with the different nitrogen topdressing methods, namely, No (without N), once surface topdressing (S1), once deep topdressing (D1) and twice deep topdressing(D2). The dry mater biomass and N use efficiencies were analyzed. [ Results J Deep dressing of nitrogen were more effective in the biomass accumulation than surface dressing (S1), and the effect of the D2 was better than that of the D1 treatment (P< 0.05). The N contents in all the tested organs, except in stem, in the treatment D2 were significantly higher than D1 and S1 (P< 0.05), and the N accumulation in D2 were significantly higher
收稿日期:201601-12
接受日期:2016-03-06
基金项目:黑龙江省科研机构创新能力提升专项计划项目(YC2014D002);国家公益性行业(农业)科研专项(201503116-1);黑龙
江省农业科技创新工程重点项目(ZD010)资助。
作者简介:朱宝国(1982一),男,黑龙江依兰人,预士。助理研究员,主要从事土壤肥料与植物营养研究。
E-mail; zhubaoguo82@163.com。* 通信作者 E-mail; chunfeng-1@163.com
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