Soil microaggregates can influence the soil physical, chemical and biological properties and may be used as an overall index for evaluating the fertility level of soil.
土壤微团聚体具有影响土壤理化生物性质多方面的作用，可能作为评价土壤肥力水平的综合指标。
The present study has investigated biological effects of arsenic on clay pan yellow cinnamon soil, red soils (with high fertility and low fertility) and paddy soil.
通过室内培养及室外盆栽实验，研究了砷在粘盘黄褐土、红壤(高肥力、低肥力)、水稻土上的生物学效应。
Biological Reclamation refers to the use of biological, and other technical measures to restore soil fertility and biological productivity, and establish a stable layer of plant activities.
生物复垦是指采用生物等技术措施恢复土壤肥力和生物生产能力，建立稳定植物层的活动。
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