| 南太湖流域控释包膜尿素对水稻产量及稻田氮素流失的影响 |
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| 引用本文： | 杨春蕾,袁玲,李英才,梁新强,吴良欢,陈宏坤. 南太湖流域控释包膜尿素对水稻产量及稻田氮素流失的影响[J]. 土壤通报, 2013, 0(1): 184-190 |
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| 作者姓名： | 杨春蕾 袁玲 李英才 梁新强 吴良欢 陈宏坤 |
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| 作者单位： | 教育部环境修复与生态健康教育部重点实验室,浙江大学环境与资源学院;浙江省亚热带土壤与植物营养重点实验室,浙江大学环境与资源学院;浙江大学环境与资源学院环境工程系;国家缓控释肥工程技术研究中心 |
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| 基金项目： | “十一五”国家水专项(2008ZX07101-006);“十二五”国家科技支撑计划(2011BAD11B01;2011BAD11B02);国家自然科学青年基金项目(40901142);公益性行业(农业)科研专项(201003016);浙江省“三农五方”科技协作计划资助 |
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| 摘 要： | 通过研究控释包膜尿素(硫磺加树脂包膜尿素SPCU、树脂包膜尿素PCU、硫磺包膜尿素SCU)和普通尿素PU对水稻产量和稻田水体氮含量的影响,为水稻氮素减控施肥技术提供依据。结果表明,等氮条件下,不同氮肥品种对稻田田面水和地下水氮影响较大,与普通尿素(PU)处理相比,SPCU处理可以显著降低水稻灌浆期之前田面水和地下水总氮、氨氮及硝氮的浓度;三种控释肥处理下水稻的产量均比PU处理高,其中SPCU处理最高,比PU处理增产19.7%;SPCU处理的氮肥利用率高达40%,比PU处理高75.4个百分点。因此,从氮肥利用率及环境安全角度出发,SPCU是水稻生产中比较理想的氮素肥料。
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| 关 键 词： | 控释包膜尿素 农业面源污染 氮流失 产量 水稻 |
Effects of Controlled-release Coated Urea on Nitrogen Loss of Rice Fields and Rice Grain Yield in the Southern Region of Taihu Lake |
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| YANG Chun-lei,YUAN Ling,LI Ying-cai,LIANG Xin-qiang,WU Liang-huan,CHEN Hong-kun. Effects of Controlled-release Coated Urea on Nitrogen Loss of Rice Fields and Rice Grain Yield in the Southern Region of Taihu Lake[J]. Chinese Journal of Soil Science, 2013, 0(1): 184-190 |
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| Authors: | YANG Chun-lei YUAN Ling LI Ying-cai LIANG Xin-qiang WU Liang-huan CHEN Hong-kun |
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| Affiliation: | 1.Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health/College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058,China;2.Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition,College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058,China;3.Department of Environmental Engineering,College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058,China;4.National Controlled-release Coated Fertilizer Engineering Research Center,Linyi 276700,China) |
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| Abstract: | This experiment investigated the effects of controlled release coated urea on rice production and water nitrogen concentration of rice fields,trying to develop a key technology on reduction and control of nitrogen emission in fertilization.The results showed that water quality would be significantly affected by the type of the fertilizers.Before the grain-filling stage of the rice,the application of SPCU(sulfur-polyester resin-coated urea) could significantly reduce the concentration of the total nitrogen,ammonia nitrogen and nitrate nitrogen in the surface runoff and groundwater,compared to PU(prilled urea).A higher grain yield was obtained when controlled-release nitrogen fertilizer was applied.The highest grain yield occurred after SPCU application,which was 19.7% higher than that in PU fertilizing.The nitrogen use efficiency of SPCU was 40%,which showed 75.4% of increment compared to that of PU.Hence,both economic and environmental benefits could be satisfied by the utilization of SPCU. |
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| Keywords: | Controlled-release coated urea Non-point source pollutants N loss Grain yield Rice. |
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