长期施肥条件下黑土镉的积累及其趋势分析

应用生态学报

长期施肥条件下黑土镉的积累及其趋势分析

谭长银^{1, 2, 3};吴龙华¹;骆永明¹;徐建明⁴;韩晓增⁵;乔云发⁵

¹中国科学院南京土壤研究所土壤环境与污染修复重点实验室，南京 210008; ²湖南师范大学资源与环境科学学院，长沙 410081;³中国科学院研究生院，北京 100049; ⁴浙江大学环境与资源学院，杭州 310029; ⁵中国科学院东北地理与农业生态研究所，哈尔滨 150008

收稿日期:2008-04-11 修回日期:1900-01-01 出版日期:2008-12-20 发布日期:2008-12-20

Cadmium accumulation and its development tendency in black soil under long-term fertilization.

TAN Chang-yin^1,2,3;WU Long-hua¹;LUO Yong-ming¹;XU Jian-ming⁴;HAN Xiao-zeng⁵;QIAO Yun-fa⁵

¹Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;²College of Resources and Environmental Sciences, Hu’nan Normal University, Changsha 410081, China;³Graduate University of Chinese Academy of Sciences, Beijing 100049, China; ⁴College of Environment and Resource Sciences, Zhejiang University, Hangzhou 310029, China; ⁵ Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150008, China

Received:2008-04-11 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20

摘要/Abstract

摘要： 以中国科学院海伦农业生态实验站长期田间定位试验为基础，研究了长期定量施用氮磷化肥和猪粪对黑土Cd的积累及其有效性的影响，并对黑土Cd的积累趋势进行了预测.结果表明：在完全不施肥的自然农业生产条件下黑土Cd浓度略有增加；长期定量施用氮磷化肥使黑土Cd浓度显著增加，但不同化肥用量对黑土Cd积累的影响无显著差异；长期施用猪粪可显著增加黑土Cd的积累，且近年来有加速积累的趋势，含Cd饲料添加剂可能是猪粪中Cd的重要来源；施用氮磷化肥对黑土Cd的有效性无显著影响，长期施用猪粪则可显著提高黑土Cd的有效性.

关键词: 胡麻, 水氮耦合, 氮素转运, 氮素积累, 氮肥利用率, 产量

Abstract: Based on the long-term field experiment at Hailun Agro-ecosystem Experimental Station of Chinese Academy of Sciences, this paper studied the cadmium (Cd) accumulation, its development tendency, and Cd availability in black soil under effects of long-term application of chemical N and P fertilizers and pig manure. The results showed that under no fertilization, soil Cd concentration had a slight increase. Long-term chemical N and P fertilization increased soil Cd concentration significantly, but soil Cd accumulation had less difference under different N and P fertilization rates. Applying pig manure increased the Cd accumulation in soil significantly, and the accumulation had a tendency of speed-up. Cd-containing feedstuff additives could be the important source of Cd in pig manure. No significant effects of chemical N and P fertilization were observed on the Cd availability in soil, but long-term application of pig manure increased the Cd availability significantly.

Key words: grain yield, N utilization efficiency, oil flax, water and nitrogen coupling, N translocation, N accumulation

谭长银^{1, 2, 3};吴龙华¹;骆永明¹;徐建明⁴;韩晓增⁵;乔云发⁵. 长期施肥条件下黑土镉的积累及其趋势分析[J]. 应用生态学报.

TAN Chang-yin^1,2,3;WU Long-hua¹;LUO Yong-ming¹;XU Jian-ming⁴;HAN Xiao-zeng⁵;QIAO Yun-fa⁵. Cadmium accumulation and its development tendency in black soil under long-term fertilization.[J]. Chinese Journal of Applied Ecology.

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