| 不同氮肥水平对黄瓜产量、土壤硝态氮累积及土壤水溶液硝态氮含量的影响 |
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| 引用本文： | 蔡万涛,陈阜,张海林,雷杰,文新亚.不同氮肥水平对黄瓜产量、土壤硝态氮累积及土壤水溶液硝态氮含量的影响[J].华北农学报,2009,24(3). |
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| 作者姓名： | 蔡万涛 陈阜 张海林 雷杰 文新亚 |
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| 作者单位： | 1. 中国农业大学农学与生物技术学院,北京,100193
2. 北京市种子管理站,北京,100088 |
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| 基金项目： | "十一五"国家科技支撑计划 |
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| 摘 要： | 通过在北京通州区的肥料定位试验,研究了不同施肥量对黄瓜产量、土壤硝态氮累积量及土壤水溶液硝态氮累积量的影响.结果表明,施氮量为260 kg/hm2时,达到作物最高产量,并取得最佳经济效益,从而确定该施肥量为最佳氮肥投入量;通过对不同施肥量条件下土壤NO3-N累积量的研究,将该研究区土壤对氮肥环境容量确定为N一年260 kg/hm2;通过测定作物收获后0～90 cm土壤硝态氮累积量能够有效反映对当茬作物的施肥量水平;土壤0～90 cm水溶液N03-N浓度随着氮肥投入量的增加而增大;作物收获后0～90 cm土壤水溶液中NO3-N含量与其土壤N03-N含量具有显著相关性;通过对0～90 cm土壤水溶液硝态氮含量的测定,能有效反映不同施肥水平对地下水的污染潜力.
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| 关 键 词： | 环境容量 施肥量 土壤硝态氮 土壤水溶液 |
Effects of Different Nitrogen Fertilization Levels on Yield of Cucumber,the Soil Nitrate-N Accumulation and the Soil Solution Nitrate-N Concentrations |
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| CAI Wan-tao,CHEN Fu,ZHANG Hai-lin,LEI Jie,WEN Xin-ya.Effects of Different Nitrogen Fertilization Levels on Yield of Cucumber,the Soil Nitrate-N Accumulation and the Soil Solution Nitrate-N Concentrations[J].Acta Agriculturae Boreali-Sinica,2009,24(3). |
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| Authors: | CAI Wan-tao CHEN Fu ZHANG Hai-lin LEI Jie WEN Xin-ya |
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| Institution: | 1.College of Agronomy and Biology Technique;China Agricultural University;Beijing 100193;China;2.Beijing Administration Seed Station;Beijing 100088;China |
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| Abstract: | The effects of different nitrogen fertilization levels on yield of cucumber,the soil nitrate-N content and the soil solution nitrate-N concentration were studied by the experiment in Tongzhou of Beijing.The results showed that cucumber yield was highest at the N rate 260 kg/ha,also got best gross economic returns at this N rate,it was the best N rate input.This studied evaluated the soil nitrate-N content under different nitrogen fertilization levels,the results showed that the environment capacity of the s... |
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| Keywords: | Environment capacity Rate of fertilizer applied Soil nitrate-N Soil solution |
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