| 猪粪氮素有效性与替代化肥氮当量研究 |
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| 引用本文： | 李玲玲,李书田.猪粪氮素有效性与替代化肥氮当量研究[J].中国土壤与肥料,2011(5):60-64. |
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| 作者姓名： | 李玲玲 李书田 |
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| 作者单位： | 中国农业科学院农业资源与农业区划研究所,北京,100081 |
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| 基金项目： | 国家重点基础研究发展计划课题(2007CB109308); 国际科技合作计划项目(2005DFA31100) |
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| 摘 要： | 采用温室盆栽试验,初步研究了猪粪氮素的有效性和替代氮肥的替代当量,并结合田间试验对等有效氮条件下有机无机配施与单施化肥的效果进行了比较。盆栽试验表明,随着猪粪用量的增加,氮素回收率逐渐降低,回收率为22.5%～38.3%,平均30.6%。当猪粪用量为N 120 mg/kg时,其氮素相对于化肥的相对有效性为27%。不同用量下猪粪的替代氮肥当量也具有一定差异,相对替代当量为24.0%～40.8%,平均32.9%。田间试验表明,利用猪粪中的有效氮替代30%的化肥氮对春玉米干物质和籽粒产量以及氮素吸收量没有影响,与100%化肥氮处理相当。
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| 关 键 词： | 猪粪 替代当量 氮素有效性 |
| 收稿时间： | 2011/1/27 0:00:00 |
| 修稿时间： | 2011/3/18 0:00:00 |
Nitrogen availability of pig manure and its fertilizer equivalence |
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| LI Ling ling,LI Shu tian.Nitrogen availability of pig manure and its fertilizer equivalence[J].Soil and Fertilizer Sciences in China,2011(5):60-64. |
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| Authors: | LI Ling ling LI Shu tian |
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| Institution: | LI Ling-ling,LI Shu-tian*(Institute of Agricultural Resources and Regional Planning,CAAS,Beijing 100081) |
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| Abstract: | A pot experiment was conducted to investigate the availability of N from pig manure and its fertilizer equivalence(FE).Field studies were also arranged to test the results from pot experiment.Effect of combination of pig manure with urea on dry matter,grain yield and N uptake in maize was compared with single fertilizer N application under equal available N.Results indicated that the recovery efficiency of N from pig manure was 22.5%~38.3% with an average of 30.6%,and decreased with the increased rate of pi... |
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| Keywords: | pig manure nitrogen availability fertilizer equivalence |
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