| 不同施肥模式对玉米产量及土壤硝态氮的影响 |
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| 引用本文： | 张鑫,安景文,邹晓锦,隋世江.不同施肥模式对玉米产量及土壤硝态氮的影响[J].河南农业科学,2012,41(2):41-44. |
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| 作者姓名： | 张鑫 安景文 邹晓锦 隋世江 |
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| 作者单位： | 辽宁省农业科学院环境资源与农村能源研究所,辽宁沈阳,110161 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项，国家"十一五"科技支撑计划重点项目 |
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| 摘 要： | 研究了大田条件下习惯施肥、施缓控释肥、优化施肥和秸秆还田4种不同施肥模式对玉米产量及土壤硝态氮的影响。结果表明,一次性施入缓控释肥的玉米产量比习惯施肥增产2.67%。氮肥用量与收获后土壤剖面硝态氮累积量呈正相关,施氮量越多,土壤硝态氮在100cm土层范围内的累积量也越大。0～100cm土壤剖面硝态氮的累积量,不同处理表现为:缓控释肥<优化施肥<秸秆还田<习惯施肥;与习惯施肥相比,缓控释肥、优化施肥、秸秆还田处理0～100cm土层中硝态氮积累量分别下降了48.0%、46.5%、40.7%,从而降低了农田地下水硝态氮污染的风险。综合玉米产量、硝态氮积累量,认为在施氮192kg/hm2条件下,施用缓释肥料既可保证产量又能降低浅层地下水硝态氮污染的风险。
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| 关 键 词： | 玉米 氮肥 土壤硝态氮 籽粒产量 缓控释肥 |
Effect of Different Fertilization Modes on Maize Yield and Soil Nitrate-nitrogen |
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| ZHANG Xin
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AN Jing-wen
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ZOU Xiao-jin
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SUI Shi-jiang.Effect of Different Fertilization Modes on Maize Yield and Soil Nitrate-nitrogen[J].Journal of Henan Agricultural Sciences,2012,41(2):41-44. |
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| Authors: | ZHANG Xin AN Jing-wen ZOU Xiao-jin SUI Shi-jiang |
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| Institution: | (Institute of Environmental Resources and Rural Energy,Liaoning Academy of Agricultural Sciences, Shenyang 110161,China) |
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| Abstract: | The effects of different fertilization levels and modes on maize yield and soil nitrate-N content were studied under field conditions.The results showed that compared to the traditional mode,application of slow release fertilizer increased maize yield by 2.24%.N rate and nitrate-N accumulation in soil profile after harvest was positively correlated,the greater the amount of nitrogen,the greater the nitrate-N accumulation within 100 cm soil.The soil nitrate-N accumulation within 100 cm soil under different treatments was showed as application of slow release fertilizer
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| Keywords: | corn nitrogen fertilizer soil nitrate-N grain yield slow release fertilizer |
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