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衬膜水稻技术对荒漠化土壤微生物多样性的修复效果研究
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Abstract:
本试验采用16SrDNA测序技术对修复前后的两种科尔沁沙地土壤微生物多样性进行比较分析，对荒漠化土壤修复效果进行评价，建立基本的数据基础，为衬膜水稻技术的推广提供依据，探索新的、合理的荒漠化土壤质量评价标准，从而促进荒漠化地区土壤生态评价系统的完善。结果表明，虽然荒漠化沙地土壤的微生物多样性高于修复后的衬膜水稻土壤，但是原有的菌群经土壤修复后会发生变化，修复技术会改变荒漠化沙地土壤的群落结构，会增加荒漠化沙地土壤优势菌种群落丰度，增加土壤菌落丰度。
The research uses 16SrDNA technology to compare and analyze the microbial diversity of desertification soil in Horqin sandy land before and after restoration. This research evaluates the effect of desertification soil restoration, establishes a basic data base, provides a basis for the popularization of paddy rice in film-bottomed sandy land technique, explores new and reasonable criteria for the evaluation of desertification soil quality, and promotes the perfection of soil ecological evaluation system in desertification areas. The results show that although the microbial diversity of desert sand soil is higher than that of the repaired by paddy rice in film-bottomed sandy land technique, the original bacteria group will change after soil repairing, and the technology will change the community structure of desertification sandy soil, increase the abundance of desertification sandy soil advantage bacteria population and increase the community richness of soil bacteria.
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