期刊文献+

不同施肥模式下土壤微量元素变化与转化特征 被引量:14

Dynamic changes of soil trace elements under different fertilization modes
原文传递
导出
摘要 以长期定位试验为平台,研究不同施肥制度下土壤Fe、Mn、Zn、Cu、Pb含量的变化及转化情况。结果表明:施肥对土壤全量微量元素含量没有显著影响,但对元素有效态含量影响显著,施肥导致土壤有效态微量元素含量增加,具体表现为化肥配施循环猪圈肥(NPK+M)处理微量元素有效态最高,单施化肥(NPK)处理次之,循环猪圈肥(M)处理更低,对照(CK)处理最低。各处理土壤微量元素收入均小于支出,不同处理间收支差额NPK+M<M<CK<NPK,单施化肥加剧土壤微量元素赤字化,养分循环利用可弥补土壤微量元素的损失,减小收支差额。微量元素在迟效库与有效库之间可以相互转化,且受到收支差额和有效态含量变化的影响。 Taking an 18-year field experiment in the lower reach of Liaohe River Plain as a platform,this paper analyzed the dynamic changes of trace elements in aquic brown soil under different fertilization modes.Fertilization had little effects on the concentrations of soil total trace elements,but affected the concentrations of soil available trace elements significantly.Treatment NPK+pig manure (M) had the highest concentrations of soil available trace elements,followed by treatments NPK,M,and CK.In all treatments,the budgets of soil trace elements were negative,with the deficit being NPK+MMCKNPK,suggesting that applying chemical fertilizers alone aggravated the deficit,while applying organic manure could mitigate the deficit.The trace elements in test soil could be transformed from available pool to non-available pool and vice versa,depending on the budgets and the concentrations of soil available trace elements.
出处 《生态学杂志》 CAS CSCD 北大核心 2010年第4期711-716,共6页 Chinese Journal of Ecology
基金 中国科学院知识创新项目(KZCX2-YW-407) 国家科技支撑计划课题(2008BADATB08 2007BAD89B02) 沈阳环境工程重点实验室基金资助项目(ERCERR08014)
关键词 养分循环 收支 微量元素 迟效库 有效库 潮棕壤 nutrient cycling budget trace elements non-available pool available pool aquic brown soil
  • 引文网络
  • 相关文献

参考文献26

二级参考文献106

共引文献335

同被引文献234

引证文献14

二级引证文献84

;
使用帮助 返回顶部