摘要
本文阐述了国内外土地后备资源现状及存在问题,解剖了土壤肥力演化机制和土壤资源保护的关系,介绍了我国生态农业建设的研究进展,指出了今后的主攻方向。
Soils that grow in different natural environment have different soil fertili-ty. From soil fertility evolutive mechanism, this paper expounds that if cropping system andsafeguardings are not rational, soil resources will degenerate. This paper also analyses the im-portance of our agricultural ecological construction, its content and its devolopmental direc-tion.
出处
《中国人口·资源与环境》
CSSCI
1991年第1期71-75,共5页
China Population,Resources and Environment
