华北农学报2016，Vol.31Issue(3)：191-197,7.DOI:10.7668/hbnxb.2016.03.028
不同管理模式对春玉米土壤硝态氮累积与氮素利用率的影响
Effects of Different Management Patterns on Soil Nitrate Nitrogen Accumulations and Nitrogen Use Efficiency in Spring Maize
摘要
Abstract
The effects of different management patterns(Control treatment /CK,Farmer practice treatment /FP, Optimized application treatment /OPT,High yield and high efficiency treatment /HY),nitrate nitrogen accumulation, nitrogen balance and use efficiency in 3 sites(WS,QX,DY)with different soil fertilities (high,mid,low).The re-sults of three-year field experiments showed that the nitrate nitrogen accumulations decreased in the order:FP >HY >OPT >CK in 0 -200 cm soil profiles,at the harvest stage(201 1 ,2012)of spring maize in 3 sites.The highest nitrate nitrogen residue average was 287.7 kg /ha at the site of WS,respectively 18.4% and 1 1 .6% higher com-pared with the site of DY and QX.The nitrogen apparent losses were the highest from FP,which were FP >HY >OPT >CK in 3 sites,except the CK treatment.The crop uptake decreased as HY >OPT >FP >CK at all the sites. Nitrogen agronomic use efficiency decreased as HY >OPT >FP(201 1 ,2012),the highest nitrogen recovery efficien-cy was HY(67.6%)at the site of QX(2013).The residue mineral N and nitrogen apparent losses were influenced by soil fertilities,whereas nitrogen utilization were no significantly with soil fertilities.It was suggested that the pat-tern like HY with controlled N application rate and increasing organic fertilizer should be generalized,to reduce ni-trate nitrogen residue and improve N use efficiency.关键词
春玉米/硝态氮/氮素平衡/氮素利用率Key words
Spring maize/Nitrate nitrogen/Nitrogen balance/Nitrogen use efficiency分类
农业科学引用本文复制引用
郭彩霞,王永亮,郭军玲,张建杰,王琦,杨治平..不同管理模式对春玉米土壤硝态氮累积与氮素利用率的影响[J].华北农学报,2016,31(3):191-197,7.基金项目
科技部国际科技合作专项（2015 DFA90990）；农业部公益性行业（农业）科研专项（201103003）；山西省国际科技合作项目（2014081036）；山西省青年科技研究基金项目（2014021031-1）；山西省农业科学院博士研究基金项目 （）
