沼渣与水分的耦合对温室土壤N积累及重金属污染状况的研究  

Studied on the Heavy Metal Pollution and N Accumulation of Water-Biogas Dregs Coupling in Greenhouse Soil

作　　者：谢景欢[1] 袁巧霞[1] 陈钢 王志山[1] 林贵英[1] 郭聪颖[1] 王延昌[1] 

机构地区：[1]华中农业大学工学院,湖北武汉430070 [2]武汉市农业科学研究所,湖北武汉430052

出　　处：《水土保持学报》2010年第4期144-147,共4页Journal of Soil and Water Conservation

基　　金：国家"十一五"支撑计划项目(2008BADC4B17);武汉市科技攻关项目(200920222083);湖北省水利厅项目资助

摘　　要：采用完全随机区组田间试验设计的方法,以番茄为供试作物,研究了沼渣与水分的耦合对温室土壤N积累及重金属污染状况。结果表明,低灌溉量下,沼渣与化肥配合使用有利于土壤中重金属累积量的减少;就土壤中N积累状况而言,S2F2为较适宜的水肥组合。综合两方面得知,S2F2水肥组合有利于土壤环境的改善,为后续作物的栽培提供足够的N源,即3 000 m3/hm2灌水量+40%沼渣+60%化肥为较适宜的水肥组合。A randomized block field experiment was conducted in greenhouse to studied on the heavy metal pollution and N accumulation of water-biogas dregs coupling in greenhouse soil when tomato as the test crop.The results showed that the effect of water-biogas dregs coupling was beneficial to decrease the content of heavy metal at low irrigation level.In terms of the N accumulation conditions S2F2 treat was the more suitable one.In a word,S2F2 treat was useful to the soil environment and it could provided adequate N source,that is 3 000 m3/hm2 water 40% biogas dregs 60% fertilizer was a more appropriate water and fertilizer combinations.

关 键 词：温室 沼渣 番茄 N积累 重金属 

分 类 号：X53[环境科学与工程—环境工程] S626.5[农业科学—园艺学]