| 控灌条件下稻田田面水含氮量、土壤肥力及水氮互作效应试验研究 |
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| 引用本文： | 孙爱华,朱士江,郭亚芬,张忠学.控灌条件下稻田田面水含氮量、土壤肥力及水氮互作效应试验研究[J].土壤通报,2012(2):362-368. |
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| 作者姓名： | 孙爱华 朱士江 郭亚芬 张忠学 |
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| 作者单位： | 东北农业大学水利与建筑学院;东北林业大学林学院 |
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| 基金项目： | 黑龙江省科技攻关计划:黑土区水稻田间节水技术模式研究(GA09B105-1)资助 |
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| 摘 要： | 通过田间试验,研究了不同控制灌溉模式下不同氮素用量稻田田面水铵态氮、硝态氮的变化特征,综合评价了试验区稻田土壤肥力等级,并分析了水分与氮素用量对水稻产量和产量构成因素的互作效应。结果表明:在水稻整个生长过程中,过量施肥对土壤最后残留的氮含量影响较大;土壤肥力等级的高低、每次施氮后所取水样铵态氮与硝态氮浓度的均值同相应的施氮水平有较高的因果效应。施返青肥后田面水铵态氮浓度最高值在施氮后第3天出现,施穗肥后田面水铵态氮浓度最高值在施氮后第2天出现,田面水硝态氮浓度出现最高值的时间要滞后于铵态氮1天。氮肥对水稻产量及其构成因子均表现为正效应,且高施氮量的正效应大于中施氮量的。控水效应和土壤水分胁迫与氮素互作效应对产量及其构成因素的影响多数为负效应,表明进行水分胁迫会影响产量构成因素进而降低水稻的产量。
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| 关 键 词： | 水肥条件 铵态氮 硝态氮 全氮量 土壤肥力等级 互作效应 |
Experimental Research on Nitrogen Content,Soil Fertility and Water-Nitrogen Interaction in Surface Water of Rice Field under Controlled Irrigation Model |
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| SUN Ai-hua,ZHU Shi-jiang,GUO Ya-fen,ZHANG Zhong-xue.Experimental Research on Nitrogen Content,Soil Fertility and Water-Nitrogen Interaction in Surface Water of Rice Field under Controlled Irrigation Model[J].Chinese Journal of Soil Science,2012(2):362-368. |
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| Authors: | SUN Ai-hua ZHU Shi-jiang GUO Ya-fen ZHANG Zhong-xue |
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| Institution: | 1(1.School of Water Conservancy &Civil Engineering,Northeast Agriculture University,Harbin 150030,China; 2.College of Forestry,Northeast Forestry University,Harbin 150040,China.) |
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| Abstract: | A field experiment was conducted to study the effects of different amounts of nitrogen under different irrigation models on the contents of NH4+-N and NO3——N of paddy field and comprehensively evaluate the grades of paddy soil fertility,and at last analyze the interaction effect of soil water and nitrogen on rice yield and its component factors.The results showed that excessive fertilization had a large influence on the content of soil residual nitrogen.The grades of the soil fertility,as well as the concentration of NH4+-N and NO3——N in water sample after each fertilizer-nitrogen application,highly correlated with the nitrogen application rates.The highest value of NH4+-N concentration in paddy surface water appeared on the third day after turning green fertilizer.The highest value of NH4+-N concentration appeared on the second day after panicle fertilizer,and the peak value of NO3——N concentration appeared one day later than NH4+-N. |
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| Keywords: | Water and fertilizer condition Ammonium nitrogen Nitrate nitrogen Total nitrogen Soil fertility grades Effect of interaction |
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