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| 单株定量施肥方式下烟田土壤NO3-N淋溶特征研究 | |
| 引用本文： | 李良勇,余卓越,邹喜明,崔国贤,黄国强.单株定量施肥方式下烟田土壤NO3-N淋溶特征研究[J].作物研究,2006,20(2):134-137. |
| 作者姓名： | 李良勇 余卓越 邹喜明 崔国贤 黄国强 |
| 作者单位： | 1. 湖南省烟草公司浏阳市公司,浏阳,410300 2. 浏阳市烟草科学技术研究所,湖南,浏阳,410300 3. 湖南农业大学农学院,长沙,410128 |
| 基金项目： | 国家烟草专卖局资助项目 |
| 摘 要： | 2004年在湖南浏阳烟区烟稻轮作田块上，研究了单株定量施肥方式下NO3-NN在土壤中淋溶损失的规律。结果表明：烟苗大田移栽后1～4周内NO3-N的淋溶较多，第4周出现高峰，5～7周NO3-NN淋溶量相对较少，12周以后又呈上升趋势；NO3-N淋溶量与降水量存在正相关关系，但不显著；常规施肥条件下比单株定量施肥条件下NO3-NN含量更易受降水量的影响；常规施肥下，NO3-N含量在现蕾期以前，60～90cm土层有一个浓度升高区，现蕾期以后，浓度升高区消失；而在单株定量施肥下，NO3-N含量始终由表层向下部土层递减；NO3-N表聚现象，常规施肥较单株定量施肥方式明显。因此，单株定量施肥法为减少NO3-NN淋溶损失提供了可能。 |
| 关 键 词： | 烤烟 土壤 施肥 硝态氮 淋溶 |
| 文章编号： | 1001-5280(2006)02-0134-04 |
| 收稿时间： | 04 8 2006 12:00AM |
| 修稿时间： | 2006年4月8日 |
A Study on Nitrate Leaching in Tobacco Field under Quantitative Application of Fertilizers |
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| LI Liang-yong,YU Zhuo-yue,ZOU Xi-ming,CUI Guo-xian,HUANG Guo-qiang.A Study on Nitrate Leaching in Tobacco Field under Quantitative Application of Fertilizers[J].Crop Research,2006,20(2):134-137. | |
| Authors: | LI Liang-yong YU Zhuo-yue ZOU Xi-ming CUI Guo-xian HUANG Guo-qiang |
| Institution: | 1 .Liuyang Tobacco Corporation,Liuyang,Hunan,410300,China; 2 Liuyang Tobacco Research Institute, Liuyang,410300,China; 3 Agronomy College,Hunan Agricultural University,Changsha,410128,China |
| Abstract: | A field experiment with quantitative application of fertilizers in glay paddy soil in Hunan province was carried out to study the nitrate leaching in the tobacco field.The results showed that the leaching amount was relatively high at 1~4 weeks after transplanting;Leaching peak was found at the 4th week after transplanting,but relatively low at 5~7 weeks after transplanting;The leaching had a rising trend after the 12th week;There was a positive correlation between the leaching amount of NO_3-N and precipitation;Under conventional application before bud period there was an area of NO_3-N density increasing in 60~90 cm soil layer from the surface,but the characteristic disappeared after bud period compared with conventional application;Under quantitative fertilizer application NO_3-N was discreased sharply with the depth of soil profiled in tobacco field;The surface-gathering phenomenon of NO_3-N amount under conventional application was more serious than that under quantitative application. |
| Keywords: | Flue-cured tobacco Soil Fertilizer application Nitrate Leaching |
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