| 不同施氮水平下油菜地土壤氮素径流流失特征研究 |
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| 引用本文： | 俞巧钢,叶静,马军伟,孙万春,王强,姜丽娜,符建荣,陈义. 不同施氮水平下油菜地土壤氮素径流流失特征研究[J]. 水土保持学报, 2011, 25(3): 22-25,30 |
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| 作者姓名： | 俞巧钢 叶静 马军伟 孙万春 王强 姜丽娜 符建荣 陈义 |
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| 作者单位： | 浙江省农业科学院环境资源与土壤肥料研究所,杭州,310021 |
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| 基金项目： | 公益性行业(农业)科研专项(201003014); 浙江省重大科技专项重点农业项目(2009C12001); 浙江省自然科学基金(Y3090180); 浙江省农科院科技创新提升工程项目 |
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| 摘 要： | 采用野外阳问试验,研究了浙北平原不同施氮水平对油菜地土壤氮素流失形态与含量的影响.结果表明,施肥的时间与降雨间隔对氮素的流失形态和浓度有明显影响,硝态氮是氮索流失的主要形态,占流失无机氮的比例为0.56～0.95;但若施肥后短期内降雨,铵态氮流失占有量增加,占流失无机氮的比例为0.37～0.42;氮素的流失量与施肥水平...
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| 关 键 词： | 氮 油菜地 径流损失 面源污染 |
Effects of Different Nitrogen Applied Levels on Nitrogen Runoff Loss in Oilseed Rape Fields |
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| YU Qiao-gang,YE Jing,MA Jun-wei,SUN Wan-chun,WANG Qiang,JIANG Li-n,FU Jian-rong,CHEN Yi. Effects of Different Nitrogen Applied Levels on Nitrogen Runoff Loss in Oilseed Rape Fields[J]. Journal of Soil and Water Conservation, 2011, 25(3): 22-25,30 |
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| Authors: | YU Qiao-gang YE Jing MA Jun-wei SUN Wan-chun WANG Qiang JIANG Li-n FU Jian-rong CHEN Yi |
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| Affiliation: | YU Qiao-gang,YE Jing,MA Jun-wei,SUN Wan-chun,WANG Qiang,JIANG Li-na,FU Jian-rong,CHEN Yi(Institute of Environment Resource and Soil Fertilizer,Zhejiang Academy of Agriculture Science,Hangzhou 310021) |
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| Abstract: | The effect of different nitrogen applied level on nitrogen transformation form and runoff loss content were studied in the north plain region of Zhejiang province by oilseed rape field experiments.The results showed that,the fertilized period and rain fertilization interval had a significant influence on nitrogen export form and concentration in the runoff loss water.Nitrate was the main form nitrogen,and the ratio of nitrate nitrogen to inorganic nitrogen was from 0.56 to 0.95 in the runoff loss water.Howe... |
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| Keywords: | nitrogen oilseed rape fields runoff loss non-point source pollution |
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