Effects of long-term straw retention on soil microorganisms under a rice–wheat cropping system

Yu, Chengqun; Li, Yong; Mo, Rongli; Wen, Ding; Zhu, Zhixian; Liu, Dongbi; Hu, Xingming

doi:10.1007/s00203-020-01899-8

Cited by 26 publications

(15 citation statements)

References 34 publications

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“…Meanwhile, the WS treatment increased the soil microbial diversity, soil microbial richness, and the ability of utilizing carbon sources in the 0-20 cm layers. Those were in good agreement with those of Yu et al 42 . The reason for this was the straw returning contributed to the greater accumulation of rice residues on the soil surface, promoting the growth and proliferation of certain groups of microbes.…”

Section: Discussionsupporting

confidence: 93%

Effects of Straw Returning on Soil Physicochemical Properties and Microbial Diversity Under the Rice-crayfish Integrated System

Zhu

Peng

et al. 2021

Preprint

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This study represents the investigation of soil physicochemical properties and microbial diversity by the Biolog ECO analysis in a 7-year field experiment using winter flooded fallow + no straw returning (W), winter flooded fallow + straw returning (WS), and winter flooded fallow + straw returning + crayfish farming (WSC) at soil depths of 0-10 cm and 10-20 cm. Compared with the W treatment, the WS treatment has significantly more total reducing substances in the 0-10 cm layer and sucrase activity in the 0-20 cm layer. The WSC treatment has significantly more available N (AN), total N (TN) contents, acid phosphatase and sucrase activities in the 10-20 cm layer, while the pH value, total reducing substances, and Fe2+ content in the 0-20 cm layer was considerably lower compared with the WS treatment. Biolog ECO analysis reveals that microbial community composition in the WS and WSC treatments differs from that in the W treatment in the 0-20cm layer. The WS treatment increases significantly the diversity of bacterial community and the ability of utilizing carbon sources in the 0-10 cm layer, and the species abundance of bacterial community in the 0-20 cm layer. Meanwhile, in the 10-20 cm soil layer, the WSC treatment improves the species abundance of bacterial community and the ability of utilizing carbon sources compared with the WS treatment. These results indicate that straw returning under the rice-crayfish integrated system improves soil physicochemical properties, decreases reducing substances properties, and increases soil enzyme activity and functional diversity of microbial community, thereby contributing to soil condition.

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Section: Discussionsupporting

confidence: 93%

Effects of Straw Returning on Soil Physicochemical Properties and Microbial Diversity Under the Rice-crayfish Integrated System

Zhu

Peng

et al. 2021

Preprint

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“…Straw return is widely applied in rotation systems to prevent the impact of straw burning on the environment. The incorporation of straw into soil has become a key measure for improving soil quality (Yu et al, 2020 ). Therefore, returning straw to the field was often an effective measure for protecting the environment and maintaining the soil microbial community characteristics (Marschner et al, 2011 ; Yang et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of different straw retention techniques on soil microbial community structure in wheat–maize rotation system

Zhang

Cui

et al. 2023

Front. Microbiol.

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Rotational straw return technique is considered an effective measure for improving soil quality and maintaining soil microorganisms. However, there are few reports on the influence of wheat–maize crop rotation and straw-returning tillage on crop soil microbial communities in China. This study aimed to investigate how wheat or maize straw-incorporation practices affect bacterial and fungal communities under wheat–maize rotational farming practices. To clarify the effects of straw incorporation on microbial composition, microbial communities from soils subjected to different treatments were identified using high-throughput sequencing. Our results showed that, before corn planting, wheat and maize straw returning reduced bacterial density and increased their diversity but had no effect on fungal diversity. However, before wheat planting, returning wheat and corn stalks to the field increased the diversity of soil bacteria and fungi, whereas returning corn stalks to the field reduced the diversity of fungi and other microorganisms. Straw return significantly increased the relative abundance of Ascomycota in the first season and decreased it in the second season; however, in the second season, wheat straw return increased the relative abundance of Bradyrhizobium, which can promote the soil microbial nitrogen cycle and provide nitrogen to the soil. Wheat and maize straw return increased the relative abundance of Chaetomium, whereas, individually, they decreased the relative abundance. In addition, we detected two fungal pathogens (Fusarium and Trichoderma) under the two planting patterns and found that the relative abundance of pathogenic Fusarium increased with wheat straw return (FW and SW). Trichoderma increased after treatment with maize straw return before wheat planting (S group). These results suggest that wheat straw return (FW and SW) and maize straw return might have a negative impact on the pathogenic risk. Therefore, further studies are needed to determine how to manage straw returns in agricultural production.

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“…Ground mulching intensifies plant–soil interactions, accelerates the mineralization of organic matter in the soil, and increases soil microbial activity (M. Li et al., 2012). Straw decomposition inputs large amounts of exogenous C to the soil and changes the activity of bacterial taxa, resulting in an increase in their ability to use C sources (Yu et al., 2020). Proper farming practices can enhance the C sequestration capacity of soils and increase the abundance of soil microorganisms (Six et al., 2006).…”

Section: Introductionmentioning

confidence: 99%

Long‐term ground cover affects soil bacterial community and carbon metabolism in the Loess Plateau, China

Zhang

Wang

et al. 2022

Soil Science Soc of Amer J

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Farmland mulching can maintain soil nutrients, which plays a positive role in agricultural planting in the arid area. However, the composition of the soil microbial community and the C cycle involved is unclear under farmland mulching. Based on the Changwu Agro-Ecological Experiment Station, this study set up a long-term positioning experiment to explore the effect on soil bacterial community structure and C metabolism capacity. In this study, we include five treatments: control uncovered (CK), plastic film mulching (PF), high amount of straw mulching carried out in July, August, and September every year (St 90 ), low amount of straw mulch throughout the growth period (S 45 ), and high amount of straw cover throughout the growth period (S 90 ). We combined Illumina MiSeq sequencing and Biolog-ECO technology to analyze the functional characterization of soil bacterial community composition in terms of C source metabolism. The results indicated that the soil bacteria showed a high degree of epistatic clustering, and the operational taxonomic unit numbers of soil bacteria decrease as St 90 , S 45 , PF, CK, and S 90 . Redundancy analysis showed that soil available P, NH 4 + -N, soil moisture content were the main environmental factors affecting bacterial community composition. Proteobacteria, Acidobacteria, and Actinobacteria are the main dominant flora in this area. Soil bacterial C metabolism was highest under PF treatment. Structural equation modeling (SEM) shows that surface cover has direct and indirect effects on bacterial C metabolism capacity and diversity through soil physicochemical properties. Reasonable mulching methods have a positive effect on the sustainable development of agro-ecosystems in arid areas. Abbreviations: AP, available phosphorus; AWCD, average well color development; CK, control uncovered; MC, soil moisture content; MFC, soil maximum water holding capacity in the field; NH 4 + -N, soil ammonium nitrogen; NO 3 − -N, nitrate-nitrogen; OTU, operational taxonomic units; PF, plastic film mulch; RDA, redundancy analysis; S 45 , low amount of straw mulch throughout the growth period; S 90 , high amount of straw cover throughout the growth period; SEM, structural equation modeling; SOC, soil organic carbon; St 90 , high amount of straw mulching is carried out in July, August, and September; TC, total carbon; TN, total nitrogen; TP, total phosphorus.

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Effects of long-term straw retention on soil microorganisms under a rice–wheat cropping system

Cited by 26 publications

References 34 publications

Effects of Straw Returning on Soil Physicochemical Properties and Microbial Diversity Under the Rice-crayfish Integrated System

Effects of Straw Returning on Soil Physicochemical Properties and Microbial Diversity Under the Rice-crayfish Integrated System

Effect of different straw retention techniques on soil microbial community structure in wheat–maize rotation system

Long‐term ground cover affects soil bacterial community and carbon metabolism in the Loess Plateau, China

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