| 有机无机肥配施对杭嘉湖地区稻田氮素利用率及环境效应的影响 |
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| 引用本文： | 叶静,俞巧钢,杨梢娜,姜丽娜,马军伟,王强,汪建妹,孙万春,符建荣.有机无机肥配施对杭嘉湖地区稻田氮素利用率及环境效应的影响[J].水土保持学报,2011,25(3):87-91. |
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| 作者姓名： | 叶静 俞巧钢 杨梢娜 姜丽娜 马军伟 王强 汪建妹 孙万春 符建荣 |
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| 作者单位： | 1. 浙江省农业科学院环境资源与土壤肥料研究所,浙江杭州,310021
2. 浙江省舟山市农林局农业技术推广中心站,浙江舟山,316000 |
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| 基金项目： | 浙江省重大项目(2009C12001); 国家自然科学基金项目(31000941); 公益性行业(农业)科研专项(201003014),公益性行业(农业)科研专项(201003059) |
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| 摘 要： | 采用田间试验结合15 N同位素示踪,研究有机无机肥配施对浙江省杭嘉湖平原稻田氮素利用率及环境效应的影响,结果表明:在施氮量150kg/hm2基础上,加施有机肥3 000kg/hm2,稻谷增产9.8%～17.7%,氮素利用率达到47.9%,比单施化肥提高4.8%。而在施氮量210kg/hm2的基础上增施有机肥,稻谷产量及氮素利用率均呈下降趋势。硝态氮是稻田土壤氮素损失的主要形式,施用有机肥能有效地降低氮素损失率。在施氮量150kg/hm2基础上配施有机肥,氮素通过田间径流的流失率由0.85%降至0.70%,氮素通过渗漏水损失率由1.29%降至0.96%;施氮量达到210kg/hm2后,施用有机肥对减少氮素流失的效果不明显。综合考虑试验点土壤特性、施肥目标产量以及对农田环境污染的潜在风险,建议以每1hm2施用纯氮150kg、配施3 000kg有机肥较为适宜。
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| 关 键 词： | 有机肥 化肥 氮素损失 杭嘉湖 |
Effect of Combined Application of Organic Manure and Chemical Fertilizers on N Use Efficiency in Paddy Fields and the Environmental Effects in Hang Jiahu Area |
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| YE Jing,YU Qiao-gang,YANG Shao-n,JIANG Li-n,MA Jun-wei,WANG Qiang,WANG jian-mei,SUN Wan-chun,FU Jian-rong.Effect of Combined Application of Organic Manure and Chemical Fertilizers on N Use Efficiency in Paddy Fields and the Environmental Effects in Hang Jiahu Area[J].Journal of Soil and Water Conservation,2011,25(3):87-91. |
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| Authors: | YE Jing YU Qiao-gang YANG Shao-n JIANG Li-n MA Jun-wei WANG Qiang WANG jian-mei SUN Wan-chun FU Jian-rong |
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| Institution: | YE Jing1,YU Qiao-gang1,YANG Shao-na2,JIANG Li-na1,MA Jun-wei1,WANG Qiang1,WANG jian-mei1,SUN Wan-chun1,FU Jian-rong(1.Institute of Environment,Resource,Soil and Fertilizer,Zhejiang Academy of Agricultural Sciences,Hangzhou,Zhejiang 310021,2.Central Station of Agro-techniques Extension,Bureau of Agriculture and Forestry,Zhoushan,Zhejiang 316000) |
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| Abstract: | The effect of combined application of organic manure and chemical fertilizers on N use efficiency(NUE) in paddy fields and the environmental effects in Hang jiahu area were studied by field experiments and 15N isotopic tracer.The results showed that combined use of 150 kg/hm2 nitrogen and 3 000 kg/hm2 organic manure improved the yield of rice by 9.8%~17.7%.The N use efficiency was 47.9%,and 4.8% higher than that of chemical fertilizers only.While combination of 210 kg/hm2 nitrogen and 3 000 kg/hm2 organic m... |
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| Keywords: | organic manure chemical fertilizer nitrogen loss Hangjiahu area |
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