| 优化施氮下稻-麦轮作体系氮肥氨挥发损失研究 |
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| 引用本文： | 夏文建,周卫,梁国庆,王秀斌,孙静文,李双来,胡诚,陈云峰.优化施氮下稻-麦轮作体系氮肥氨挥发损失研究[J].植物营养与肥料学报,2010,16(1):6-13. |
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| 作者姓名： | 夏文建 周卫 梁国庆 王秀斌 孙静文 李双来 胡诚 陈云峰 |
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| 作者单位： | 1.中国农业科学院农业资源与农业区划研究所,农业部作物营养与施肥重点开放实验室,北京 100081; |
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| 基金项目： | 国家水稻产业技术体系项目，科技部科研项目，国家科技支撑计划，中央级公益性科研院所基本科研业务费专项资金项目 |
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| 摘 要： | 采用密闭室连续通气法研究了优化施氮下湖北稻-麦轮作体系农田氨挥发损失。结果表明,肥料氮素氨挥发损失量随施肥量增加而增加。施肥处理小麦季氨挥发损失量为N 11.37~17.05 kg/hm2,肥料氮氨挥发损失率为4.75%5~.43%,氨挥发峰值大约发生在施肥后的第35~d,肥料氨挥发过程持续71~0 d;水稻季氨挥发损失量为N32.506~2.82 kg/hm2,肥料氮氨挥发损失率为8.24%1~9.38%,氨挥发峰值大约发生在施肥后的第23~d,氨挥发过程持续57~d。水稻季和小麦季氨挥发之间差异显著,整个稻-麦轮作体系氨挥发主要发生在水稻季,约占整个轮作体系的74.08%7~8.65%。同习惯施氮相比,基于作物阶段氮素吸收增加追肥比例和施肥次数的优化施氮能有效减少肥料氮的氨挥发损失。
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| 关 键 词： | 稻麦轮作 氨挥发 水稻土 优化施氮 |
| 收稿时间： | 2009-2-18 |
Effect of optimized nitrogen application on ammonia volatilization from paddy field under wheat-rice rotation system |
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| XIA Wen-jian,ZHOU Wei ,LIANG Guo-qing,WANG Xiu-bin,SUN Jing-wen,LI Shuang-lai,HU Cheng,CHEN Yun-feng.Effect of optimized nitrogen application on ammonia volatilization from paddy field under wheat-rice rotation system[J].Plant Nutrition and Fertilizer Science,2010,16(1):6-13. |
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| Authors: | XIA Wen-jian ZHOU Wei LIANG Guo-qing WANG Xiu-bin SUN Jing-wen LI Shuang-lai HU Cheng CHEN Yun-feng |
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| Affiliation: | 1.Institute of Agricultural Resources and Regional Planning,CAAS/Key Lab of Crop Nutrition and Fertilization Science,MOA,Beijing 100081,China; |
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| Abstract: | A continuous airflow enclosure method was used to measure the ammonia volatilization(AV) from paddy field under the wheat-rice rotation system in Hubei Province.The results indicated that total amount of AV loss generally increased with the urea application rate.In wheat growing season,AV loss varied from N 11.37-17.05 kg/ha which accounted for 4.75 to 5.43 percent of applied N,the AV from fertilizer N lasted for 7-10 days and peak of AV occurred within 3-5 days after fertilization;While in rice growing sea... |
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| Keywords: | wheat-rice rotation system ammonia volatilization paddy soil optimizing N application |
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