THE IMPORTANCE OF SOIL IN NATURAL ANDAGROECOLOGICAL SYSTEMS: PRESENT-DAY PROBLEMSOF SOIL CONSERVATION
[摘要] The essay tells of new domestic and foreign achievements and experiences in protecting soils and environment. The unpublished data of the author and his assistants' work are used here, but were also expressed during discussions at...
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[效力级别] [学科分类] 环境科学（综合）
[关键词] soil;natural and agroecological systems;chemical time bombs;vulnerability of soil [时效性]
