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首页> 外文期刊>Archives of Agronomy and Soil Science >Changes in soil bacterial community structure and microbial function caused by straw retention in the North China Plain
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Changes in soil bacterial community structure and microbial function caused by straw retention in the North China Plain

机译：土壤细菌群落结构的变化和北方秸秆保留引起的微生物术

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The effects of straw retention on soil bacterial community structure, microbial function, and biochemical properties were assessed. Terminal restriction fragment length polymorphism (T-RFLP) and community-level physiological profile (CLPP) assays were used to assess the bacteria community structure and microbial function respectively. Treatments included straw removal with conventional tillage (CT), straw retention with conventional tillage (SRCT) and straw retention with no tillage (SRNT). SRCT and SRNT significantly (p < 0.05) increased soil organic carbon by 8.9% and 9.7%, and microbial biomass carbon by 44.7% and 330.8%, respectively, compared with CT. T-RFLP analysis indicated that straw retention had no favourable effect on soil bacterial diversity, and SRCT significantly (p < 0.05) decreased bacterial diversity compared to CT. Among the three treatments, SRNT had the highest activity of urease, invertase, cellulase, and beta-glucosidase. SRCT significantly (p < 0.05) increased the activity of invertase and beta-glucosidase compared to CT treatment. CLPP analysis showed that microbial functional diversity was significantly (p < 0.05) increased by straw retention. Enzyme activity and microbial functional diversity were not correlated with bacterial diversity. Therefore, according to this study, SRNT is a better farming practice because it improves soil fertility and biological quality.
机译：评估秸秆保留对土壤细菌群落结构，微生物功能和生化特性的影响。终端限制性片段长度多态性（T-RFLP）和群落级生理分布（CLPP）测定分别用于分别评估细菌群落结构和微生物功能。处理包括秸秆除去常规耕作（CT），秸秆保留，常规耕作（SRCT）和秸秆保留，没有耕种（SRNT）。与CT相比，SRCT和SRNT显着（P <0.05）将土壤有机碳增加了8.9％和9.7％，微生物生物质碳分别为44.7％和330.8％。 T-RFLP分析表明，秸秆保留对土壤细菌多样性没有有利影响，与CT相比，细菌多样性降低（P <0.05）。在三种处理中，SRNT具有脲酶，转化酶，纤维素酶和β-葡糖苷酶的最高活性。 SRCT显着（P <0.05）与CT处理相比，转化酶和β-葡糖苷酶的活性增加。 CLPP分析表明，秸秆保留增加了微生物功能多样性显着增加（P <0.05）。酶活性和微生物功能多样性与细菌多样性无关。因此，根据本研究，SRNT是一种更好的农业实践，因为它提高了土壤肥力和生物质。

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