添加生物炭对灌淤土土壤养分含量和氮素淋失的影响

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 生态安全研究室

	添加生物炭对灌淤土土壤养分含量和氮素淋失的影响
	惠锦卓 1; 张爱平 1; 刘汝亮 2; 王永生 3; 陈哲 1; 杨正礼 1
刊名	中国农业气象
	2014
卷号	35 期号:2 页码:156-161
关键词	生物炭灌淤土土壤养分 NH_4~+ -N NO_3~- -N
ISSN号	1000-6362
其他题名	Effects of Biochar on Soil Nutrients and Nitrogen Leaching in Anthropogenic-Alluvial Soil
英文摘要	灌淤土是宁夏引黄灌区的主要土种, 当地大引大排的灌溉方式不仅造成土壤养分淋失, 而且会引起水体污染。本文采用室内土柱模拟降雨淋滤方式, 设置1500g灌淤土分别添加1%、2%、5%、10%生物炭4个处理, 观测淋滤后土柱中的养分状况和淋溶液中氮素含量, 以不加生物炭为对照, 研究添加生物炭对土壤养分含量和氮素淋失的影响。结果表明:(1)添加生物炭后土壤PH、全盐以及全磷含量未发生变化, 土壤中全氮、速效磷和速效钾含量随着生物炭添加量的增大而显著增加;(2)添加生物炭处理与对照相比均极显著降低了土壤淋溶液的硝态氮含量和淋溶损失量(P <0. 01), 以2%生物炭添加处理效果最好, 比对照减少了49%的淋溶损失。(3)铵态氮的淋失峰值随生物炭添加量的增大而延后, 但仅添加生物炭10%的处理显著减少铵态氮的淋溶损失量(P <0. 05), 比对照减少了18%, 其它处理则显著增加了铵态氮的淋溶损失量(P <0. 05), 这一效果是否与生物炭种类有关, 还需进一步探讨。; Anthropogenic-alluvial soil was the main species in Ningxia irrigation district. The crude farming methods are used in the paddy planting, such as uncontrolled irrigation and excessive fertilization, leading to a high leaching of nitrate nitrogen to the surface water. Soil column leaching method was used to study the effect of different amount of biochar application on nitrogen leaching and soil nutrient availability in anthropogenic-alluvial soil. The results showed that there was no significant difference in soil pH, the content of total salt and phosphorus between the biochar addition treatments and control, but, the content of total soil nitrogen, available phosphorus, available kalium was significantly increased with the biochar application amount. Applying biochar significantly reduced the concentration and leaching amount of nitrate nitrogen. 2% biochar addition reduced the nitrate nitrogen leaching by 49% when compared with the control. The leaching peak of ammonium nitrogen was delayed with the increase of biochar addition. The significant decrease of ammonium nitrogen leaching (18%) was found only in the treatment of 10% biochar addition. However, the opposite trend was found in the other biochar addition, compared with the control. Whether the species of biochar affect nitrogen leaching in anthropogenic-alluvial soil needs to be further studied.
学科主题	农业基础科学 ; 环境保护管理
语种	中文
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/16943]
专题	农业环境与可持续发展研究所_生态安全研究室
作者单位	1.中国农业科学院农业环境与可持续发展研究所, 农业部农业环境重点实验室, 北京, 100081 2.宁夏农林科学院农业资源与环境研究所, 银川, 750002 3.中国科学院地理科学与资源研究所, 北京, 100101
推荐引用方式 GB/T 7714	惠锦卓,张爱平,刘汝亮,等. 添加生物炭对灌淤土土壤养分含量和氮素淋失的影响[J]. 中国农业气象,2014,35(2):156-161.
APA	惠锦卓,张爱平,刘汝亮,王永生,陈哲,&杨正礼.(2014).添加生物炭对灌淤土土壤养分含量和氮素淋失的影响.中国农业气象,35(2),156-161.
MLA	惠锦卓,et al."添加生物炭对灌淤土土壤养分含量和氮素淋失的影响".中国农业气象 35.2(2014):156-161.