|
| 保护性耕作对土壤团聚体、微生物及线虫群落的影响研究进展 |
| Research progress of effects of conservation tillage on soil aggregates, microbes and nematode communities |
| 投稿时间：2019-09-30 修订日期：2020-01-02 |
| DOI： |
| 中文关键词: 保护性耕作 团聚体 有机碳 微生物 线虫 |
| 英文关键词: conservation tillage soil aggregates soil organic carbon soil microbes nematodes |
| 基金项目:中国农业科学院协同创新任务 |
|
| 摘要点击次数: 422 |
| 全文下载次数: 0 |
| 中文摘要: |
| 保护性耕作具有良好的生态效益，有利于农业生态系统的可持续发展。本文对比分析了国内外有关常规耕作和保护性耕作措施对土壤团聚体、土壤有机碳、土壤微生物及土壤线虫影响的研究进展。保护性耕作对土壤团聚体及生物特性的影响主要表现在以下几方面：保护性耕作减少土壤大团聚体的破坏，降低团聚体周转速率，提高土壤结构的稳定性；保护性耕作提高表层土壤总有机碳及活性有机碳含量；保护性耕作可以提高耕层微生物生物量，尤其对真菌生物量影响显著；保护性耕作不同程度地提高了团聚体中微生物量和微生物多样性，但并未改变微生物在团聚体中的分布模式；保护性耕作可提高土壤线虫多度，提高原状土壤和土壤各粒级团聚体中线虫群落的成熟度指数和结构指数，但并未改变线虫总数、营养类群、功能团及生态指数在团聚体中的分布模式。针对目前国内外研究现状，本文对保护性耕作日后的研究重点进行了展望，以期为因地制宜地选取保护性耕作措施提供理论支持，推进我国农业可持续发展。 |
| 英文摘要: |
| Conservation tillage has good ecological benefits.It is conducive to the sustainable development of agricultural ecosystems. This paper compares and analyzes the research progress on the effects of conventional and protective tillage measures on soil aggregates, soil organic carbon, soil microorganisms, and soil nematodes at home and abroad. The effects of conservation tillage on soil aggregates and biological characteristics are mainly manifested in the following aspects: conservation tillage reduces the damage of large soil aggregates, reduces the aggregate turnover rate, and improves the stability of soil structure; conservation tillage increases the total surface soil Contents of organic carbon and active organic carbon; Conservation tillage can increase the microbial biomass in the cultivated layer, especially with a significant impact on fungal biomass; Conservation tillage increases the microbial biomass and microbial diversity in aggregates to varying degrees, but does not change the microbial population Distribution patterns in aggregates; conservation tillage increases soil nematode abundance, increases maturity index and structure index of nematode communities in undisturbed soil and soil aggregates of all sizes, but does not change the total number of nematodes, nutritional groups, functional groups, and ecology Distribution pattern of the index in the agglomerates. In view of the current research status at home and abroad, this article looks forward to the future research focus of conservation tillage, with a view to providing theoretical support for selecting conservation tillage measures in accordance with local conditions, and promoting sustainable development of agriculture in China. |
| HTML
View Fulltext
查看/发表评论 下载PDF阅读器 |
| 关闭 |
