| 三种控释肥在赤红壤中的氧化亚氮排放 |
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| 作者姓名： | Du YQ Zheng LX Fan XL |
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| 作者单位： | 华南农业大学资源环境学院,广州,510642 |
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| 基金项目： | "十一五"国家科技支撑计划项目,国家自然科学基金 |
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| 摘 要： | 采用静态箱收集和对比法,研究了无作物种植条件下包膜与否对高氮、均衡及高钾3种氮磷钾配比复合肥在华南赤红壤发育的菜园土中氧化亚氮(N2O)排放情况.结果表明:肥料氮磷钾配比不同,N2O排放量差异显著,3种类型复合肥N2O累积排放量表现为均衡型≥高氮型＞高钾型;同一类型复合肥,包膜控释能显著降低N2O排放量,包膜控释高氮、均衡及高钾型复合肥N2O排放总量分别为不包膜复合肥N2O排放量的34.4％、30.5％和89.3％;与不包膜相比,复合肥包膜能降低肥料在土壤中的N2O日排放通量,滞后和削减N2O排放高峰,减少土壤氮素损失以及由N2O排放造成的全球增温潜势.
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| 关 键 词： | N2O排放 氮磷钾配比 包膜肥 复合肥 全球增温潜势 |
Effects of applying controlled release fertilizers on N2O emission from a lateritic red soil |
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| Du YQ,Zheng LX,Fan XL.Effects of applying controlled release fertilizers on N2O emission from a lateritic red soil[J].Chinese Journal of Applied Ecology,2011,22(9):2370-2376. |
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| Authors: | Du Ya-qin Zheng Li-xing Fan Xiao-lin |
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| Institution: | DU Ya-qin,ZHENG Li-xing,FAN Xiao-lin (College of Natural Resources and Environmental Science,South China Agricultural University,Guangzhou 510642,China) |
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| Abstract: | Static closed chamber technique and contrast method were adopted to study the effects of three coated compound fertilizers (N:P2O5:K2O=19:8.6:10.5, high N; 14.4:14.4:14.4, balanced NPK; and 12.5:9.6:20.2, high K) on the N2O emission from a lateritic red soil under the condition of no crop planting, taking uncoated compound fertilizers (N:P2O5:K2O=20:9:11, high N; 15:15:15, balanced NPK; and 13:10:21, high K) as the contrasts. Different formula of fertilizer NPK induced significant difference in the N2O emis... |
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| Keywords: | N2O emission NPK formula coated fertilizer compound fertilizer global warming potential |
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