Microbial Activity in Paddy Soil and Water-Use Efficiency of Rice as Affected by Irrigation Method and Nitrogen Level

Liang, Yue; Li, Fusheng; Nong, Mengling; Luo, Honghai; Zhang, Jianhua

doi:10.1080/00103624.2015.1104336

Cited by 18 publications

(5 citation statements)

References 17 publications

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“…Lei et al found that the urease activity increased when the N application rate was increased from 247 to 433 mg/kg 54 . Liang et al reported that a medium N level increased the urease activity 55 . Thus, N fertilisation provides a good means to increase the urease activity to improve the soil microbiota.…”

Section: Discussionmentioning

confidence: 99%

Analysis of bacterial and fungal communities in continuous-cropping ramie (Boehmeria nivea L. Gaud) fields in different areas in China

Wang

Liu

et al. 2020

Sci Rep

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Ramie (Boehmeria nivea L. Gaud) suffers from long-term continuous cropping. Here, using Illumina high-throughput sequencing technology, we aimed to identify bacteria and fungi associated with continuous cropping in ramie fields in Yuanjiang, Xianning, Sichuan, and Jiangxi. The rarefaction results showed that Jiangxi had significantly lower bacterial α-diversity than that of the other areas. Firmicutes, Proteobacteria, and Acidobacteria were the dominant bacterial phyla, and Ascomycota, Basidiomycota, and Zygomycota were the dominant fungal phyla. In Jiangxi, Firmicutes accounted for 79.03% of all valid reads, which could have significant decreased microbial diversity and negative effects of continuous ramie cropping. We used traditional methods to examine soil nutrients. Sichuan had a relatively high pH and available P and K, but low total N; opposite findings were recorded in Jiangxi. The redundancy analysis revealed that the urease activity, PH, available K, and total N significantly correlated with bacterial community abundance, whereas only total N significantly correlated with fungal community abundance (p < 0.01). Overall, the effect of soil environmental factors on the bacterial diversity of continuous ramie cropping was greater than that on fungal diversity. In the future, we will focus on the effect of rhizosphere bacteria to solve the obstacle in continuous ramie cropping. In continuous cropping, the same or a similar species is planted continuously in the same field 1. Generally, long-term continuous cropping decreases crop yield and quality 2-4 , alters soil microbial communities 5,6 , affects soil biochemical properties 7,8 , and enriches soil-borne plant pathogens in soil 9,10. Soil microorganims are not only an important part of soil, but also the main drivers of soil nutrient cycling 11. Soil microorganisms play a crucial role in regulating the fertility of soil, health of plants, and cycling of C, N, and other nutrients 11,12. Previous studies have shown that long-term continuous cropping can alter soil microbial communities 13-15. In a continuous pea-cropping field, the soil microbial community was smaller, and the abundance of beneficial gram-positive bacteria and arbuscular mycorrhizal (AM) fungi was reduced 16. Similarly, Sun et al. found that in continuous cropping of banana, bacterial community diversity continuously decreased and bacterial community composition and structure were affected 8. Numerous studies have revealed that soil attributes are influenced by continuous cropping 17,18. In addition, environmental factors, such as soil pH, affect soil microbial communities 19,20. Wang et al. found that root exudate composition and soil pH affected soil microbial community in different plant growth stages 21. Thus, it is crucial to analyse the relationship between soil microbial community and environmental factors. However, only a few studies have focused on differences in different areas under continuous cropping with the same plant. Ramie, also known as "China grass, " is a perennial plant...

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Section: Discussionmentioning

confidence: 99%

Analysis of bacterial and fungal communities in continuous-cropping ramie (Boehmeria nivea L. Gaud) fields in different areas in China

Wang

Liu

et al. 2020

Sci Rep

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“…Irrigation water in the MSI TPR field was substantially lower compared to those in the DSR fields (72.0 and 46.0 cm during the 2008 and 2009 seasons, respectively) [27]. Liang et al [12] reported that a similar irrigation method ("thin-shallow-wet-dry") used in South China, at the middle nitrogen level, led to a decrease in the total water consumption by 21.7%-23.5% and an increase in the rice water use efficiency by 17.8%-27.2%.…”

Section: Discussionmentioning

confidence: 99%

Modeling of Soil Water Regime and Water Balance in a Transplanted Rice Field Experiment with Reduced Irrigation

Šimůnek

Wang

et al. 2017

Water

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Available water resources for agricultural irrigation have decreased worldwide in recent decades, prompting advances in water saving methods. In this study, soil water regime and water balance in a transplanted rice field with reduced irrigation (multiple shallow depth irrigations) in the Taihu Lake Basin of East China were observed and then evaluated using Hydrus-1D model during two consecutive growing seasons. season, respectively, and were 1.47 and 1.40 kg·m −3 , respectively, when evaluated from modeled evapotranspiration fluxes. The cultivation method with multiple shallow depth irrigation efficiently used rainfall water and reduced the losses due to water percolation and surface runoff by stabilizing rice yields.

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“…Previous study has reported that applied HRW not only could increase the production of H 2 , but also reduced the stomatal aperture which resulted in the enhancing drought tolerance in Arabidopsis (Su et al, 2018). Additionally, different irrigation methods had different impacts on plant growth and development (Liang et al, 2016). Therefore, the application of HRW through different methods i.e.…”

Section: Discussionmentioning

confidence: 99%

Hydrogen rich water (HRW) induces plant growth and physiological attributes in fragrant rice varieties under salt stress

Fu¹,

Ma²,

Gui³

et al. 2020

Preprint

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Hydrogen is an important molecule, exerting antioxidant ability in plants and animals through antioxidant enzymes, which can be dissolved in water. Previous studies have showed that application of hydrogen rich water (HRW), containing a high concentration of hydrogen, plays an important role in enhancing drought tolerance and alleviating the metal stress in plants. However, the effects of HRW on plant growth and physiological attributes in fragrant rice varieties under salt stress are still unclear. A pot experiment was conducted with two fragrant rice varieties i.e. Yuxiangyouzhan and Xiangyaxiangzhan to study the effects of HRW treatments i.e. foliar application of HRW (F-HRW) and irrigation application of HRW (I-HRW) on plant growth and physiological attributes under two NaCl levels (0 mmol L -1 and 150 mmol L -1 ). The results depicte d that, compared with without HRW treatment (CK), the F-HRW and I-HRW treatments significantly increased the dry weight per unit seedling height by 12.64% and 22.99%, while decreased the plant height by 3.92% and 2.97% respectively of two fragrant rice varieties under salt stress. Moreover, compared with CK treatment, the activities of peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT) were enhanced by F-HRW and I-HRW treatments in NaCl-stressed fragrant rice cultivars and opposite results were observed for MDA content. In crux, our findings conclude that application of HRW modulates the plant growth and physiological attributes in salt-stressed fragrant rice cultivars.

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Microbial Activity in Paddy Soil and Water-Use Efficiency of Rice as Affected by Irrigation Method and Nitrogen Level

Cited by 18 publications

References 17 publications

Analysis of bacterial and fungal communities in continuous-cropping ramie (Boehmeria nivea L. Gaud) fields in different areas in China

Analysis of bacterial and fungal communities in continuous-cropping ramie (Boehmeria nivea L. Gaud) fields in different areas in China

Modeling of Soil Water Regime and Water Balance in a Transplanted Rice Field Experiment with Reduced Irrigation

Hydrogen rich water (HRW) induces plant growth and physiological attributes in fragrant rice varieties under salt stress

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