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| 水肥耦合对华北高产农区小麦-玉米产量和土壤硝态氮淋失风险的影响 | |
| 引用本文： | 张玉铭,张佳宝,胡春胜,赵炳梓,朱安宁,张立周,宋利娜.水肥耦合对华北高产农区小麦-玉米产量和土壤硝态氮淋失风险的影响[J].中国生态农业学报,2011,19(3):532-539. |
| 作者姓名： | 张玉铭 张佳宝 胡春胜 赵炳梓 朱安宁 张立周 宋利娜 |
| 作者单位： | 1. 封丘农田生态系统国家试验站,土壤与农业可持续发展国家重点实验室,中国科学院南京土壤研究所,南京,210008;中国科学院遗传与发育生物学研究所农业资源研究中心,中国科学院农业水资源重点实验室,河北省节水农业重点实验室,石家庄,050022;中国科学院研究生院,北京,100049 2. 封丘农田生态系统国家试验站,土壤与农业可持续发展国家重点实验室,中国科学院南京土壤研究所,南京,210008 3. 中国科学院遗传与发育生物学研究所农业资源研究中心,中国科学院农业水资源重点实验室,河北省节水农业重点实验室,石家庄,050022 4. 河北农业大学资源与环境科学学院,保定,071000 |
| 基金项目： | 中国科学院知识创新工程重大项目(KSCX1-YW-09-05, KSCX2-EW-N-08, KZCX2-YW-Q1-07)和国家自然科学基金面上项目(30970534)资助 |
| 摘 要： | 在封丘农田生态系统国家试验站, 通过多组水肥组合试验, 研究了冬小麦-夏玉米轮作下, 水、肥对作物产量、硝态氮在土壤剖面中的分布特征及其淋失风险的影响。结果表明, 适宜灌溉情况下, 氮磷配施是提高作物产量的关键, 氮钾配施与磷钾配施增产效果不明显。统计结果表明, 各因素对小麦产量影响次序依次为氮肥≥磷肥＞灌溉＞钾肥, 对玉米产量的影响次序为氮肥＞磷肥＞钾肥＞灌溉, 只有氮磷对作物产量的影响达到统计学上的显著性差异。随着施氮量和灌溉量的增加, 硝态氮累积峰峰值增加, 峰厚度加厚, 出现位置加深, 且根区外硝态氮含量亦显著增加, 极大地提高了硝态氮的淋失风险。适宜氮肥用量与适宜灌溉是减轻硝态氮淋失风险的关键, 氮磷配施可有效降低深层土壤硝态氮累积。研究区域适宜氮肥用量为每年400 kg(N)·hm-2,适宜磷肥用量为每年225 kg( P2O5)·hm-2, 一般降雨年型全年灌溉量以280 mm 左右为宜。 |
| 关 键 词： | 冬小麦-夏玉米轮作 水肥耦合 土壤 硝态氮 淋失风险 累积峰 根区 |
| 收稿时间： | 2/2/2011 12:00:00 AM |
| 修稿时间： | 2011/3/29 0:00:00 |
Effect of fertilization and irrigation on wheat-maize yield and soil nitrate nitrogen leaching in high agricultural yield region in North China Plain |
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| ZHANG Yu-Ming,ZHANG Jia-Bao,HU Chun-Sheng,ZHAO Bing-Zi,ZHU An-Ning,ZHANG Li-Zhou and SONG Li-Na.Effect of fertilization and irrigation on wheat-maize yield and soil nitrate nitrogen leaching in high agricultural yield region in North China Plain[J].Chinese Journal of Eco-Agriculture,2011,19(3):532-539. | |
| Authors: | ZHANG Yu-Ming ZHANG Jia-Bao HU Chun-Sheng ZHAO Bing-Zi ZHU An-Ning ZHANG Li-Zhou and SONG Li-Na |
| Institution: | State Experimental Station of Agro-Ecosystem in Fengqiu; State Key Laboratory of Soil and Sustainable Agriculture; Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; Key Laboratory of Agricultural Water Resources, Chinese Acade;State Experimental Station of Agro-Ecosystem in Fengqiu; State Key Laboratory of Soil and Sustainable Agriculture; Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Key Laboratory of Agricultural Water Resources, Chinese Academy of Sciences; Hebei Key Laboratory of Agricultural Water-Saving; Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shiji;State Experimental Station of Agro-Ecosystem in Fengqiu; State Key Laboratory of Soil and Sustainable Agriculture; Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;State Experimental Station of Agro-Ecosystem in Fengqiu; State Key Laboratory of Soil and Sustainable Agriculture; Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;College of Resources and Environmental Sciences, Agricultural University of Hebei, Baoding 071000, China;Key Laboratory of Agricultural Water Resources, Chinese Academy of Sciences; Hebei Key Laboratory of Agricultural Water-Saving; Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shiji |
| Abstract: | Field experiment with several coupled fertilization and irrigation treatments was conducted in State Experimental Station of Agro-Ecosystem in Fengqiu.Effect of fertilization and irrigation on wheat-maize yield,distribution of nitrate nitrogen in soil profile and the risk of nitrate nitrogen leaching under wheat-maize rotation system was studied.The results indicated that reasonable combined application of nitrogen and phosphorus fertilizers was the key to improve crop yield under appropriate irrigation rat... |
| Keywords: | Wheat-maize rotation system Water and fertilizer coupling Soil Nitrate nitrogen Leaching risk Accumulation peak Root zone |
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