Effect of an Organic Fertilizer of Ganoderma lucidum Residue on the Physical and Chemical Properties and Microbial Communities of Saline Alkaline Soil

Deng, Pan-Bo; Guo, Li-Peng; Yang, Hui-Ting; Leng, Xiao-Yun; Wang, Yueming; Bi, Jie; Shi, Chun-Fang

doi:10.3390/w15050962

Cited by 8 publications

(6 citation statements)

References 22 publications

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“…Jia et al [45] discovered that vermicompost amendment can increase crop biomass accumulation and heavy metal transport and bioaccumulation in alfalfa, effectively improving the soil remediation efficiency. Deng et al [46] found, through laboratory and field experiments, that vermicompost-based amendments can significantly reduce the pH of Saline-Alkali soil and increase the SOM and available nutrients, findings that are consistent with the results of the current study. This may be because organic soil amendments can regulate nitrate flux in soil by reducing gaseous nitrogen loss and reducing nitrogen leaching, and hence improving soil fertility [47].…”

Section: Discussionsupporting

confidence: 91%

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Vermicompost Combined with Soil Conditioner Improves the Ecosystem Multifunctionality in Saline-Alkali Land

Ai,

He,

et al. 2023

Water

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Addressing the challenges posed by Saline-Alkali land holds significant promise for optimizing agricultural resources and fostering sustainable agricultural development in affected areas. This study explores the efficacy of coal-based solid waste soil conditioner and vermicompost as mixed-component soil amendments in varying proportions. Through comprehensive field experiments, we investigate the impact of these amendments on soil physicochemical properties, microbial diversity, and the growth of L. chinensis, a grass species native to saline areas. Our findings reveal that the application of vermicompost-based soil amendments effectively reduced soil conductivity and led to noteworthy improvements in the pH of Saline-Alkali soil. Moreover, these amendments demonstrated a marked capacity to enhance soil organic matter and available nutrients, most notably available phosphorus. Concurrently, the introduced soil amendments exhibited a positive influence on soil microbial diversity. A correlation analysis underscores the pivotal roles of soil pH and organic matter in shifting soil microbial communities. In response to amendments, L. chinensis exhibited varying degrees of growth enhancement, with biomass increments ranging from 6.37% to 19.91%. In summary, vermicompost and soil conditioner can improve Saline-Alkali land by supplementing organic matter and effective nutrients, improving pH and conductivity, and regulating microbial community, so as to realize the restoration and improvement of Saline-Alkali land; the greatest improvement was achieved with soil conditioner and vermicompost application rates of 30,000 kg·ha−1 and 15,000 kg·ha−1, respectively. Our results provide robust support for advocating for the integration of vermicompost-based soil amendments in Saline-Alkali land management strategies.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 98%

Vermicompost Combined with Soil Conditioner Improves the Ecosystem Multifunctionality in Saline-Alkali Land

Ai,

He,

et al. 2023

Water

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“…In severe saline-alkali ecosystems, they will produce osmotic stress in bacteria and ultimately reduce and inhibit the active bacterial population and its quantity [28]. In our study, soil bacterial community richness increased in the R, H, and C treatments, which is similar to the results of Dong's study [1]. However, decomposed organic fertilizer significantly reduced the soil bacterial richness, which was the same as in Peng's study [5].…”

Section: Effects Of Organic Fertilizers With Different Degrees Of Mat...supporting

confidence: 85%

“…There is a large amount of uncultivated saline soil in China, and it is an important reserve of land resources. Finding ways to improve and manage these saline soils has become one of the emphases of future land use research [1]. Saline soil usually has a high salt content, a heavy soil texture, insufficient nutrients, and low microbial activity, which greatly limit the growth and development of plants.…”

Section: Introductionmentioning

confidence: 99%

Effects of Organic Fertilizer with Different Degrees of Maturity on Bacteria in Saline–Alkali Soil

Bai,

Liu,

Jing

et al. 2024

Agronomy

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Soil microorganisms are important components of soil ecosystems, and their diversity plays an important role in maintaining their functional stability. Organic fertilizer is an important measure for improving soil fertility in agronomic practice. The effects of organic fertilizer on soil microbial diversity and community structure are different with different degrees of maturation. In this study, uncomposted organic fertilizer (R), high-temperature organic fertilizer (H), cooling organic fertilizer (C), and decomposed organic fertilizer (D) were applied, and the 16S rRNA gene sequences of bacteria in soil were analyzed via high-throughput sequencing technology to understand the effects of organic fertilizer with different degrees of maturation on bacterial diversity and community structure in saline soil. Compared with no fertilization, the uncomposted organic fertilizer, high-temperature organic fertilizer, and decomposed organic fertilizer treatments significantly reduced soil bacterial diversity: the decomposed organic fertilizer treatment significantly reduced soil bacterial richness, the cooling organic fertilizer treatment had no significant effect on soil bacterial diversity and bacterial richness, Proteobacteria representing soil nutrients significantly increased under the cooling organic fertilizer treatment, and the relative abundance of Firmicutes significantly decreased. These four organic fertilizers, with different degrees of maturation, significantly increased the beneficial bacterium Bacillus and nitrile-based degrading bacteria but also significantly increased the potential pathogenicity of the soil, and there was no significant difference between the four treatments. In addition, during a cooling period, the organic fertilizer treatment helped to increase the population of oxidative-stress-tolerant bacteria. The application of organic fertilizer during a cooling period to saline–alkali soil is more helpful in improving its nutrient levels.

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“…Long-term plant cultivation could accelerate the process of soil desalination and maturation, causing fundamental changes in the properties of coastal saline land [28]. For alfalfa, when the planting duration increased, the biomass decreased, the consumption of soil nutrients reduced, the root-rhizobia symbiosis became more mature, the nitrogen fixation ability of plant roots enhanced, and a large number of plant residues decomposed into humus, therefore improving the soil quality.…”

Section: Discussionmentioning

confidence: 99%

Effects of Subsurface Drainage Spacing and Organic Fertilizer Application on Alfalfa Yield, Quality, and Coastal Saline Soil

Zhang,

Wang,

Yang

et al. 2024

Water

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Subsurface drainage and organic fertilizer application are two important measures for improving saline–alkali soils, while the effects of different drainage spacings combined with organic fertilizer application amounts on alfalfa growth and coastal saline soil properties have seldom been evaluated. This study designed subsurface drainage pipes at four spacing distances, including 0 m (CK, without subsurface drainage), 6 m (S1), 12 m (S2), and 18 m (S3), and three organic fertilizer application amounts, including 3000 kg/ha (N1), 4500 kg/ha (N2), and 6000 kg/ha (N3), to observe the effects of different combinations of subsurface pipe spacings and organic fertilization amounts on alfalfa yield, quality, soil salinity, and nutrients. The results showed that the yield of alfalfa increased with higher fertilization amounts and smaller spacing between drainage pipes. The highest yield occurred in the S1N3 treatment, and the three batches reached 1268.5 kg/ha, 3168.0 kg/ha, and 2613.3 kg/ha, respectively, significantly (p < 0.05) higher than CK for all three batches. The increase in organic fertilizer amount resulted in an increase of 0.5–9.3% in the crude protein content, a decrease of 1.8–3.4% in the neutral detergent fiber content, and a decrease of 1.3–5.5% in the acid detergent fiber content for alfalfa plants. Under CK, the contents of quality indicators in alfalfa were the highest. For the drainage treatments, the quality indicator contents were overall at a higher level under S3. Subsurface drainage had a reduction effect on the salinity of all the 0–80 cm soils. For the surface soil, it was detected that smaller spacing was beneficial for reducing soil salt content, while higher fertilization amounts increased the salt content. S1 reduced the soil salt content by 36.3–46.1% compared to CK; however, N3 increased the salt content by 7.0–16.2% compared to the other two fertilization treatments. In addition, smaller spacing between the subsurface drainage pipes generally reduced the soil’s available nitrogen, and total nitrogen increased the C/N ratio but had no significant effect on the organic matter. It was concluded that the spacing between subsurface drainage pipes and the application amounts of organic fertilizer have remarkable impacts on alfalfa yield and quality, mainly by changing the soil salinity and nutrient status.

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Effect of an Organic Fertilizer of Ganoderma lucidum Residue on the Physical and Chemical Properties and Microbial Communities of Saline Alkaline Soil

Cited by 8 publications

References 22 publications

Vermicompost Combined with Soil Conditioner Improves the Ecosystem Multifunctionality in Saline-Alkali Land

Vermicompost Combined with Soil Conditioner Improves the Ecosystem Multifunctionality in Saline-Alkali Land

Effects of Organic Fertilizer with Different Degrees of Maturity on Bacteria in Saline–Alkali Soil

Effects of Subsurface Drainage Spacing and Organic Fertilizer Application on Alfalfa Yield, Quality, and Coastal Saline Soil

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