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| 太湖地区黄泥土氮肥对水稻产量、叶片碳氮同化及不同土层氮的影响 | |
| 引用本文： | 郭汝礼,沈明星,卢萍,殷士学,杨林章.太湖地区黄泥土氮肥对水稻产量、叶片碳氮同化及不同土层氮的影响[J].土壤学报,2006,43(4):592-598. |
| 作者姓名： | 郭汝礼 沈明星 卢萍 殷士学 杨林章 |
| 作者单位： | 1. 中国科学院南京土壤研究所,南京,210008 2. 苏州农业科学研究所,江苏,苏州,215001 3. 扬州大学资源与环境学院,江苏,扬州,225124 |
| 基金项目： | 国家研究发展基金;中国科学院知识创新工程项目 |
| 摘 要： | 在长期定位试验的基础上研究了太湖地区黄泥土不同施氮水平对水稻产量、碳氮同化及不同土层氮的影响。结果表明，长期施氮量（N）在161．0kg hm^-2处理和高于该施氮量处理的产量之间没有显著差异。拔节期、孕穗期和灌浆期施氮量在161．0kg hm^-2处理和高于该施氮量处理的碳氮同化水平之间几乎没有差异，但都高于施氮量在57．5kg hm^-2处理的。不同土层氮分布结果表明，长期施氮量在161．0kg hm^-2和高于该施氮量各处理中，长期施入有机肥配施NPK肥处理残留最深，其次是长期施入化肥N的处理，长期秸秆还田配施N肥处理较浅。 |
| 关 键 词： | 长期施肥 碳氮同化 还原糖 全氮 |
| 收稿时间： | 07 18 2005 12:00AM |
| 修稿时间： | 2005-07-182006-03-30 |
EFFECTS OF LONG-TERM NITROGEN APPLICATION ON YIELD,CARBON-NITROGEN ASSIMILATION IN LEAVES AND SOIL NITROGEN |
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| Guo Ruli,Shen Mingxing,Lu Ping,Yin Shixue and Yang Linzhang.EFFECTS OF LONG-TERM NITROGEN APPLICATION ON YIELD,CARBON-NITROGEN ASSIMILATION IN LEAVES AND SOIL NITROGEN[J].Acta Pedologica Sinica,2006,43(4):592-598. | |
| Authors: | Guo Ruli Shen Mingxing Lu Ping Yin Shixue and Yang Linzhang |
| Affiliation: | 1 Institute of Soil Science , Chinese Academy of Sciences , Nanjing 210008, China;2 Institute of Agricultural Sciences in Suzhou City, Suzhou, Jiangsu 215001, China;3 College of Resources and Enviroment, Yartgzhou University, Yangzhou, Jiangsu 225124, China |
| Abstract: | Based on long term stationary experiment, effects of long-term nitrogen application on yield, carbon-nitrogen assimilation of leaves and soil nitrogen in permeable paddy soil in the Tai Lake region were studied. Results show that no significant difference was found between the treatment applied with N 161.0 kg hm^-2and treatments applied with more nitrogen than N 161.0 kg hm^-2 in either yield or in carbon-nitrogen assimilation rate in leaves at the jointing, booting and filling stages. But all these treatments were higher than the treatments applied with N 57.5 kg hm^-2 in both indices. Analysis of nitrogen distribution in soil profiles reveals that soil N residue went down the deepest in the treatment applied with organic manure plus NPK, which was followed by treatments applied with N 161.0 kg hm^-2 or more in chemical fertilizer. And N residue was found the shallowest in the treatment of incorporation of crop stalks into the soil plus N application. |
| Keywords: | Long-term fertilization Carbon-nitrogen assimilation Reducing sugar Total nitrogen |
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