摘要
①被调查的设施栽培土壤表土全氮、碱解氮含量范围分别是 1 .0 5～ 1 .60 g/kg土和 63.5 4～ 1 0 1 .67mg/kg土 ,平均值分别为 1 .30 g/kg土、85 .66mg/kg土 ;②设施土壤全氮、碱解氮的含量随着剖面层次的加深逐渐降低 ;③设施栽培更有利于表层土壤氮素的积累 ;④设施土壤全氮、碱解氮的含量均高于相应的露地土壤 。
The content ranges of the topsoil total nitrogen and alkaline hydrolytic nitrogen of the investigated installation cultivation soils are 1.05-1.60 g/kg soil and 63.54-101.67 mg/kg soil,and their average values respectively are 1.03 g/kg soil and 85.66 mg/kg soil;②The contents of total N and alkaline hydrolytic N lf the installation cultivation soils reduce gradually from topsoil to bottom soil;③Installation cultivation is propitious to nitrogen accumulation of topsoil;④All of the total nitrogen and alkaline hydrolytic nitrogen contents of installation cultivation soils is higher than the corresponding outdoors soils,but there are no obvious differences among them.
出处
《安徽技术师范学院学报》
2002年第1期32-35,共4页
Journal of Anhui Agrotechnical Teachers College
基金
安徽省高校优秀青年教师资助项目 (2 0 0 0jqL4 3)
安徽省"十五"科技攻关项目 (0 10 130 14 )
关键词
设施栽培
全氮量
碱解氮
变化规律
土壤氮素
蔬菜
Installation cultivation
Total nitrogen content
Alkaline hydrolytic nitrogen
Change regulation.
