| 控释肥料对覆膜栽培稻田N2O排放的影响 |
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| 引用本文： | 张怡,吕世华,马静,徐华,袁江,董瑜皎.控释肥料对覆膜栽培稻田N2O排放的影响[J].生态学杂志,2014,25(3):769-775. |
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| 作者姓名： | 张怡 吕世华 马静 徐华 袁江 董瑜皎 |
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| 作者单位： | (;1.中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室, 南京 210008; ;四川省农业科学院土壤肥料研究所, 成都 610066; ;中国科学院大学, 北京 100049) |
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| 摘 要： | 采用静态箱-气相色谱法，研究了控释肥料对四川丘陵地区覆膜节水高产栽培稻田N2O排放的影响.结果表明: 稻田施用尿素及控释肥料后水稻生长期N2O排放总量分别为(38.2±4.4)和(21.5±5.2) mg N·m-2;施用尿素处理N2O排放系数为0.25%,施用控释肥料处理N2O排放系数为0.14%,减少了43.6%(P<0.05),其中烤田前减少了49.6%(P<0.05);控释肥料可抑制施肥引起的N2O排放峰值,降幅达52.6%;控释肥料对水稻不同生长季节土壤微生物生物量氮、NH4+-N含量和水稻产量均无显著影响;N2O排放与5 cm土壤温度、土壤Eh值无显著相关性.
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| 关 键 词： | 地膜覆盖 N2O排放 稻田 控释肥 微生物生物量氮 |
Effect of controlled release fertilizer on nitrous oxide emission from paddy field under plastic film mulching cultivation. |
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| ZHANG Yi,LU Shi-hua,MA Jing,XU Hua,YUAN Jiang,DONG Yu-jiao.Effect of controlled release fertilizer on nitrous oxide emission from paddy field under plastic film mulching cultivation.[J].Chinese Journal of Ecology,2014,25(3):769-775. |
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| Authors: | ZHANG Yi LU Shi-hua MA Jing XU Hua YUAN Jiang DONG Yu-jiao |
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| Institution: | (;1.State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; ;Institute of Soil and Fertilizer, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; ;University of Chinese Academy of Sciences, Beijing 100049, China) |
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| Abstract: | A field experiment was conducted to assess the effect of controlled release fertilizer on N2O emission in paddy field under plastic film mulching cultivation (PM) with water saving irrigation. Results showed that in the rice growing season, cumulative N2O emissions from the plots applied with urea (PM+U) and with controlled release fertilizer (PM+CRF) were (38.2±4.4) and (21.5±5.2) mg N·m-2, respectively. The N2O emission factors were 0.25% and 0.14% in the treatments PM+U and PM+CRF, respectively. The controlled release fertilizer decreased the total N2O emission by 43.6% compared with urea, of which 49.6% was reduced before the drying period. It also reduced the peak of N2O emission by 52.6%. However, it did not affect soil microbial biomass N and soil NH4+-N content at any rice growing stage, and grain yield either. No significant correlation was observed between N2O flux and soil Eh or soil temperature at the depth of 5 cm. |
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| Keywords: | plastic film mulching N2O emission paddy field controlled release fertilizer microbial biomass N |
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