植物营养与肥料学报2016,22(4）：897904 Jourmal of Plant Nutrition and Fertilizer
doi: 10. 11674/zwyf. 15243 http: //www. plantnutrifert, org
不同肥力农田玉米产量构成差异及
施肥弥补土壤肥力的可能性刘海涛，季保国“，任图生，胡克林
（中国农业大学资源与环境学院，北京100193）
摘要：【目的】农田基础土壤肥力和肥料的投人共同决定着农田的养分供应以及影前作物的生长与产量。明确不
向肥力主类法】本研究名为农由
和低肥力农用增施象展
kg/hm，以及在』
的路在化肥处理在降低。
高的农由
7.8%。收获指数 9.2%和4
提升玉米每公项
形成的影响多
襄培肥和施肥的基础。【方
力由高到低依次命
氮量N210
力水平农田中土架
力农田增施氮股大值，然后逐步
其中肥力最、5.2%和，同时降低了
17.1%
科无机密供宝
米利用，通过全面
福度提高拔节期至抽雄期土
田的产量水平，而且降低了收获指数。因此，培肥土壤是实现玉米高产高效的基础。关键词：土壤基础肥力；潜在矿化氮；硝态氮；玉米；产量
中图分类号：S158.3；S513
文献标识码：A
文章编号：1008505X(2016)04089708
Dissimilarityinyield componentsof maizegrownindifferentfertility fields and effect of nitrogen application on maize in lowfertilityfields
LIU Hai-tao, LI Bao-guo', REN Tu-sheng, HU Ke-lin
( College of Resources and Emaironmental Sciences, China Agricultural Unitersity, Bejing 100193, China)
Abstract: [Objectives] Crop yields are affected by both soil fertility and fertilizer application. Thus it is necessary to evaluate the productivity under different soil fertility conditions and fertilizer application. [ Methods] Two field experiments were conducted consecutively in three years. Three fields with different basic fertility and yield levels were selected which named field A, B and C, and the soil fertility sequence was field A > B > C. Same crop aaesae lowest soil fertility. The treatments included conventional treatment (nitrogen application 210 kg/hm’), and the eaeaeosoenoneaea 20 cm soil layers,biomass accumulation and LAI at critical growth stages,yield and its components, and soil basic properties were measured. [Results] Permanent mineral nitrogen had the highest correlation coefficient with maize yield compared with other soil properties. There were no significant differences of the nitrate contents in fields with different fertility. The nitrate contents in the treatments with more nitrogen input were significantly higher than thal
收稿日期：201505-18
接受日期：2016-03-16
基金项目：国家重点基础研究发展计划("973"计划)(2009CB118607）资助。
作者简介：刘海涛（1986—），男，浙江丽水人，博士，主要从事农业资源高效利用研究。Tel；028-84796435，E-mail；liuht1986@163.com
*通信作者 E-mail； libg@ cau.edu.cn
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