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| 马唐牧草红壤氮肥的氨挥发、径流和淋溶损失 | |
| 引用本文： | 周静,崔键,胡锋,王国强,马友华.马唐牧草红壤氮肥的氨挥发、径流和淋溶损失[J].土壤学报,2007,44(6):1076-1082. |
| 作者姓名： | 周静 崔键 胡锋 王国强 马友华 |
| 作者单位： | 1. 南京农业大学资源与环境科学学院,南京,210095;中国科学院南京土壤研究所,南京,210008 2. 安徽农业大学资源与环境科学学院,合肥,230036;中国科学院南京土壤研究所,南京,210008 3. 南京农业大学资源与环境科学学院,南京,210095 4. 安徽农业大学资源与环境科学学院,合肥,230036 |
| 基金项目： | 国家自然科学基金;中国科学院知识创新工程项目 |
| 摘 要： | 探讨了我国南方红壤上种植牧草马唐施不同量氮肥,施氮量与土壤氨挥发、径流和1 m深土壤淋溶损失氮量的关系。结果表明,在施用N 90、160、230 kg hm-2尿素处理下,土壤氨挥发损失量分别为N0.67、1.24和5.16 kg hm-2,分别占施氮量的0.74%0、.77%和2.24%,土壤氨挥发损失量(y)与施氮量(x)呈指数递增关系:y=0.156 3e0.014 6x;径流氮素损失量分别为N 1.05、0.88和1.01 kg hm-2,分别占施氮量的1.17%、0.55%和0.44%,径流损失的氮量与施氮量之间无明显相关性;淋溶损失总氮量为2.05、2.86和4.09kg hm-2,分别占施氮量的0.91%、1.02%和1.24%,土壤淋溶损失总氮量(y)与施氮量(x)呈线性递增关系:y=0.012 2x 1.087 7。 |
| 关 键 词： | 红壤 马唐 施氮量 氮损失 |
| 收稿时间： | 2006/8/12 0:00:00 |
| 修稿时间： | 2006-08-12 |
N-LOSS THROUGH VOLATILIZATION,RUNOFF AND LEACHING FROM RED SOIL PLANTED WITH Digitaria ischaemum |
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| Zhou Jing,Cui Jian,Hu Feng,Wang Guoqiang and Ma Youhua.N-LOSS THROUGH VOLATILIZATION,RUNOFF AND LEACHING FROM RED SOIL PLANTED WITH Digitaria ischaemum[J].Acta Pedologica Sinica,2007,44(6):1076-1082. | |
| Authors: | Zhou Jing Cui Jian Hu Feng Wang Guoqiang and Ma Youhua |
| Affiliation: | 1 College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095, China; 2 College of Resources and Environmental Science, Anhui Agricultural University, Hefei 230036, China; 3 Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China |
| Abstract: | Relationship was explored of N loss through ammonia volatilization,runoff and soil leaching(at the depth of 1 m in the soil profile) with nitrogen(urea) application rate in red soil planted with Smooth Crabgrass(Digitaria ischaemum).Results show that N lost through ammonia volatilization in Treatments N 90,N 160 and N 230(kg hm-2) reached 0.67,1.24 and 5.16 kg hm-2,respectively,accounting for 0.74%,0.77% and 2.24% of the total N applied,showing a rising exponential relationship between the total amount of N lost through ammonia volatilization(y) and the N application rate(x)(y=0.156 3e0.014 6x).The amount of N lost through runoff was N 1.05,0.88 and 1.01 kg hm-2,accounting for 1.17%,0.55% and 0.44% of the total N applied,respectively,in the three N treatments.There was no significant relationship between the total amount of N lost through runoff and the N application rate during the growth stage of Smooth Crabgrass.In this experiment,the amount of N lost through leaching was 2.05,2.86 and 4.09 kg hm-2,which accounted for 0.91%,1.02% and 1.24% of N applied,respectively,showing an approximate linear relationship between the total amount of N lost through soil leaching(y) and the amount of N applied(x)(y=0.012 2x 1.087 7). |
| Keywords: | Red soil Digitaria ischaemum N application rate N loss |
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