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| 不同形态氮肥对玉米产量和土壤浸提性有机质的影响 | |
| 引用本文： | 尹彩霞,左竹,李桂花.不同形态氮肥对玉米产量和土壤浸提性有机质的影响[J].中国土壤与肥料,2011(3). |
| 作者姓名： | 尹彩霞 左竹 李桂花 |
| 作者单位： | 1. 吉林省农业科学院农业环境与资源研究中心,吉林长春,130124 2. 山东省东营市农业局,山东东营,257091 3. 中国农业科学院农业资源与农业区划研究所,北京,100081 |
| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金，973项目，浙江大学重点实验室基金 |
| 摘 要： | 田间条件下,研究了不同形态氮肥(尿素、NH4+-N和NO3--N)对玉米产量、根际和非根际土壤氮和浸提性有机质的影响.结果表明,施氮处理的产量和吸氮量明显高于不施肥处理;施氮处理中,NO3--N和尿素处理开花前吸氮量显著高于NH4+-N处理,产量也略高于NH4+-N处理,但未达到显著水平;不同氮形态处理之间的土壤NH4+-N、NO3--N和浸提性有机碳(EOC)、氮(EON)没有差异;抽雄期EOC最高,与根系生长发育一致,而EON苗期相对最高.可见,在基础肥力较高的黑土上,不同形态氮肥对玉米产量、土壤养分影响不明显. |
| 关 键 词： | 玉米 铵态氮 硝态氮 尿素 浸提性有机质 |
Effect of nitrogen forms on maize yield and soil extractable organic matter |
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| YIN Cai-xia,ZUO Zhu,LI Gui-hua.Effect of nitrogen forms on maize yield and soil extractable organic matter[J].Soil and Fertilizer Sciences in China,2011(3). | |
| Authors: | YIN Cai-xia ZUO Zhu LI Gui-hua |
| Institution: | YIN Cai-xia1,ZUO Zhu2,LI Gui-hua3(1.Jilin Academy of Agricultural Sciences,Changchun 130124,2.Agricultural Bureau of Shandong Dongying,Dongying 257091,3.Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081) |
| Abstract: | Field experiment was carried out to study the effect of nitrogen forms on maize yield,extractable organic matter and nitrogen content of rhizosphere and non rhizosphere soil.The results showed:Grain yield and N content of maize under different N forms treatments were significantly higher than those of no N treatment.Under the same N application rate( N 190 kg/hm2),NO-3-N and urea treatments increased maize yield and N content absorbed before anthesis comparing with NH+4-N treatment,although the increment wa... |
| Keywords: | maize NH 4-N NO-3-N urea extractable organic matter |
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