Effects of polymer materials on the transformation and utilization of soil nitrogen and yield of wheat under drip irrigation

Tian, Xiaoming; Wang, Kaiyong; Fan, Houbao; Wang, Jiqing; Wang, Lina

doi:10.1111/sum.12651

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…Studies have demonstrated that water retention agents can retain soil nutrients and promote nutrient uptake by plants [23,24]. In this experiment, the contents of soil alkali-hydrolyzed nitrogen, available phosphorus and available potassium of each treatment with water retention agent were significantly higher than those of the control at the anthesis stage of wheat, indicating that the application of water retention agent can preserve soil nutrients and reduce nutrient loss before the anthesis stage of wheat [25].…”

Section: Soil Nutrientsmentioning

confidence: 55%

Effects of compound water retention agent on soil nutrients and soil microbial diversity of winter wheat in saline-alkali land

Gao

et al. 2023

Chem. Biol. Technol. Agric.

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Water retention agents have been applied to agricultural fields to improve the growing conditions of crops, but the potential of these agents in saline soils is poorly understood. The effects of compound water retention agents on nutrient content and soil microbial diversity of saline winter wheat soils were investigated in a field experiment with no water retention agent (CK) and 30 kg hm2 of commercial attapulgite water retention agent (T4) as control and different amounts of compound water retention agents as treatments (15 kg hm2-T1, 30 kg hm2-T2, 45 kg hm2-T3). The study showed that the application of water retention agents increased the soil water content. From anthesis to harvest stage, the decreases in soil alkali-hydrolyzed nitrogen, available phosphorus, available potassium and organic matter content were greater in T2 and T3 than in the other treatments. At harvest stage, the alkali-hydrolyzed nitrogen content of T2 was significantly lower than that of CK and T4 6.19–8.83% and 4.62–5.39%, respectively. The soil available phosphorus content of T2 was significantly lower than that of CK 8.14–8.83%. The relative abundance of Actinobacteria, Proteobacteria and Acidobacteria as well as the Shannon and Simpson indices of T2 reached their maximum at harvest stage. T2 showed the best performance in terms of overall number of OTUs. The compound water retention agent may regulate soil nutrient content and accelerate plant nutrient accumulation by regulating soil water content and soil microbial abundance composition. Graphical abstract

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Section: Soil Nutrientsmentioning

confidence: 55%

Effects of compound water retention agent on soil nutrients and soil microbial diversity of winter wheat in saline-alkali land

Gao

et al. 2023

Chem. Biol. Technol. Agric.

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“…It was found that the NH 4 + -N enrichment concentration in paddy soil with HCAP treatments was higher than that for the CKU, which illustrated that NH 4 + -N (1.6- to 6.0-fold) in the HCAP treatments was easily enriched by the paddy soil due to the higher humic acid content of the HCAPs. A previous study also demonstrated that the addition of humic acid enhanced the immobilizations of soil TN and NH 4 + -N . Hence, paddy soil enriched N-containing components due to the strong complexation with soil constitutions.…”

Section: Results and Discussionmentioning

confidence: 99%

Efficient Disposal of the Aqueous Products of Wet Organic Waste Hydrothermal Carbonization by Paddy Constructed Wetlands

Wang

Miao

et al. 2022

ACS EST Eng.

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The hydrothermal carbonization (HTC) technology has recently been broadly applied. However, disposal of the accompanying high-strength HTC aqueous products (HCAPs) largely determines the promotion and application of the HTC technology. The direct discharge of HCAPs might deteriorate the water environment, and previous studies have reported that HCAPs were insecurely removed via anaerobic fermentation or microalgae production. In this work, wet organic waste HCAPs were characterized and identified, and their removal efficiency in a paddy constructed wetland (PCW) was determined. The HCAPs were found to be rich in nutrients and mainly composed of humic acid (77.8−84.7%) or lignin (44.8−68.2%). With increasing HTC temperature, the relative humic acid content in HCAPs decreased by 4.4−6.4%, as determined by the three-dimensional fluorescence excitation−emission matrix (3D-EEM) analysis. HCAPs also underwent decomposition and polymerization due to the change in MW w and AI mod as determined by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) analysis. The PCW removal efficiency of NH 4 + -N and chemical oxygen demand (COD) reached 99.2 and 93.2% in the HCAP treatments, respectively, which were much higher than the values obtained for traditional disposal applications. On the basis of the higher soil NH 4 + -N content (1.6-to 6.0-fold), larger grain total nitrogen (TN) content (5.1−18.6%), and lower fluorescence intensity (5.7−88.2%), three primary processes (i.e., uptake by rice plants, microbial degradation, and soil immobilization) were proposed as PCW removal mechanisms. This study provides novel utilization prospects for the resource utilization of HCAPs in PCW systems.

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“…Nutrient supply is also a key factor influencing the growth of plants. It has been reported that PVA can enhance the ability of plants to absorb nitrogen [155]. This explains the better growth of plants treated with PVA.…”

Section: Promotion Of Vegetation Growthmentioning

confidence: 89%

A State-of-the-Art Review of Organic Polymer Modifiers for Slope Eco-Engineering

Wang

Yao

et al. 2023

Polymers

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In slope ecological restoration projects, reinforcing soil and promoting vegetation growth are essential measures. Guest soil spraying technology can be used to backfill modified soil and vegetation seeds onto the slope surface, resulting in successful ecological restoration. The use of organic polymer modifiers to reinforce soil has several benefits, such as high strength, effective results, and low pollution levels. Organic polymer soil modifiers can be divided into two categories: synthetic polymer modifiers and biopolymer modifiers. This paper provides a thorough review of the properties and interaction mechanisms of two types of polymer modifiers in soil consolidation. The properties of organic polymer modifiers make them applicable in soil and vegetation engineering on slopes. These modifiers can enhance soil mechanics, infiltration, and erosion resistance and promote vegetation growth. Therefore, the suitability of organic polymer modifiers for soil and vegetation engineering on slopes is demonstrated by their properties and potential for improvement in key areas. Furthermore, challenges and future prospects for slope protection technology using organic polymer modifiers are suggested.

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Effects of polymer materials on the transformation and utilization of soil nitrogen and yield of wheat under drip irrigation

Cited by 9 publications

References 31 publications

Effects of compound water retention agent on soil nutrients and soil microbial diversity of winter wheat in saline-alkali land

Effects of compound water retention agent on soil nutrients and soil microbial diversity of winter wheat in saline-alkali land

Efficient Disposal of the Aqueous Products of Wet Organic Waste Hydrothermal Carbonization by Paddy Constructed Wetlands

A State-of-the-Art Review of Organic Polymer Modifiers for Slope Eco-Engineering

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