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文章摘要
引用本文:
不同施肥模式对菠萝产量及农田氧化亚氮排放的影响
Effects of Different Fertilization Model on Pineapple Yield and Nitrous Oxide Emission from Farmland
投稿时间:2020-03-17  修订日期:2020-03-21
DOI:
中文关键词: 菠萝  热带地区  施肥模式  氧化亚氮排放  产量
英文关键词: pineapple  tropical region  fertilizer regime  N2O emission  yield
基金项目:2019年海南省基础与应用基础研究计划(自然科学领域)高层次人才项目基金资助(2019RC108);国家自然科学(31860130);海南大学科研启动(KYQD(ZR)1850)
作者单位E-mail
符春敏 海南大学生命科学与药学学院 2764901364@qq.com 
尹黎燕 海南大学生命科学与药学学院  
邓燕 海南省热带生物资源可持续利用重点实验室  
兰超杰 海南省热带生物资源可持续利用重点实验室  
韩忠钰 海南省热带生物资源可持续利用重点实验室  
金鑫 海南省热带生物资源可持续利用重点实验室  
李长江 海南省热带生物资源可持续利用重点实验室 lichangjiang99@163.com 
黄家权 海南省热带生物资源可持续利用重点实验室  
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中文摘要:
      为阐明不同施肥模式下菠萝地土壤氧化亚氮(N2O)的排放特征,筛选既高产又减少N2O排放的菠萝施肥方法,试验以热带地区菠萝农田为研究对象,设置5个处理:不施肥(CK)、常规施肥(NPK)、减量单施化肥(INF)、无机肥+有机肥配施(INF+M)、无机肥+有机肥+缓控肥配施(INF+M+S),利用静态暗箱-气相色谱法对菠萝整个生育期土壤N2O排放特征进行监测,并分析不同施肥模式下土壤温度、土壤含水量、硝态氮和铵态氮对N2O排放的影响及菠萝产量间的差异。结果表明,INF+M+S、INF+M和INF处理下菠萝产量比NPK分别增加16.77%、6.66%和6.53%,且INF+M+S显著高于NPK。整个菠萝生育期,N2O累积排放量和平均通量表现为NPK>INF>INF+M>INF+M+S>CK,且处理间差异显著;排放强度表现出NPK>INF>INF+M>INF+M+S>CK,处理间也表现显著差异;同时,INF+M+S处理的排放系数也显著低于其他施肥处理;相关性分析发现,土壤硝态氮和铵态氮含量与N2O排放通量呈极显著正相关。INF+M+S处理能够显著提高菠萝产量,降低菠萝整个生育期农田N2O的排放量与排放强度,可以作为菠萝较优的施肥模式。
英文摘要:
      In order to understand the N2O emission characteristics of pineapple soil under different fertilization modes, a fertilization method that can reduce N2O emissions and ensure pineapple yield was chose. Taking pineapple farmland in the tropical region as the research object, five treatments were arranged in the experiment: no fertilizer (CK), conventional fertilizer (NPK), reduced single fertilizer (INF), combined application of inorganic fertilizer + organic fertilizer (INF+M), inorganic fertilizer + organic fertilizer + slow-control fertilizer Combined application (INF+M+S). The characteristics of soil N2O emissions were monitored using static black box-gas chromatography. and the relationship of soil temperature, soil moisture, nitrate nitrogen and ammonium nitrogen with N2O emissions and yield of pineapple were analyzed under different fertilization modes. The results showed that the INF+M+S, INF+M and INF treatments increased yield of pineapple by 16.77%, 6.66% and 6.53%, respectively, when compared with NPK treatment. During the whole pineapple growth stage, significant differences were detected in the N2O cumulative emission and average flux, with NPK>INF>INF+M>INF+M+S>CK. The emission intensity was also significantly different, with NPK>INF>INF+M>INF+M+S>CK. At the same time, the emission coefficient of INF+M+S treatment was also significantly lower than that of other fertilization treatments. The soil N2O emission flux was significant positively correlated with soil nitrate and ammonium nitrogen content. Our results clearly demonstrated that INF+M+S can be used as the better fertilization mode of the pineapple.
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