Long‐Term Biochar Application Improved Aggregate K Availability by Affecting Soil Organic Carbon Content and Composition DOI

Zhengrong Bao,

Wanning Dai,

Han Li

и другие.

Land Degradation and Development, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

ABSTRACT Straw biochar is an effective amendment at improving soil aggregate structure and increasing carbon potassium (K) content. However, little information available on the relationship between organic (SOC) aggregate‐associated K distribution under long‐term application conditions. To address this, a field trial established in 2013 was used to examine impact of (B 0 : B 1 2.625 t ha −1 year ) fertilizer (K 60 kg variation reveal associated influencing factors. A total four treatments , were included this study. The analysis results obtained 2021 showed that after 9 years' amendment, increased exchangeable (EK) nonexchangeable (NEK) pools by 27.40% 39.55%, respectively, increment primarily because enhanced > 0.25 mm fractions strengthened + adsorption capacity, which benefit from synergistic increase SOC humic acid (HA) content biochar. 13 C NMR applications altered chemical composition SOC, with outcome aromaticity hydrophobicity but decreased lipidation indicating complexity molecular eventually contributed strengthening macroaggregates stability capacity. correlation revealed EK NEK contents positively correlated HA contents, further proved significant mechanism for ameliorate availability.

Язык: Английский

Soil organic carbon accumulation mechanisms in soil amended with straw and biochar: entombing effect or biochemical protection? DOI Creative Commons

Yuhan Yuan,

Yao Liang,

Hongguang Cai

и другие.

Biochar, Год журнала: 2025, Номер 7(1)

Опубликована: Фев. 12, 2025

Abstract Converting crop residues into biochar and subsequently incorporating it soils is a promising strategy to improve carbon sequestration in agroecosystems. However, differences the potential mechanisms for soil organic (SOC) accumulation between its feedstock materials remain unclear. This study performed nine-year field experiment involving four treatments Mollisol: mineral fertilizers alone combined with maize straw or biochar, control without amendments. The main objectives of this were assess how incorporation influence SOC content, chemical composition, microbial necromass (MNC) community characteristics. Compared alone, significantly ( P < 0.05) increased while (40.5% increase) had more pronounced effects than (23.7% increase). Similarly, both MNC content boosted biomass, but impact did biochar. Additionally, markedly aromaticity by 26.6% 0.05), reduced 2.85% > 0.05). Fungi, rather bacteria, played crucial role increasing through their inputs under incorporation. Our results demonstrated that enhanced primarily entombing effect necromass, biochemical protection from recalcitrant aromatic carbon. present findings provide valuable insight practices lead maximize sequestration. Graphical

Язык: Английский

Процитировано

2
Recycled wheat straw biochar enhances nutrient-poor soil: Enzymatic kinetics of carbon, nitrogen, and phosphorus cycling DOI

Qiuting Yan,

Haixia Tian,

Yi Huang

и другие.

Journal of Environmental Management, Год журнала: 2025, Номер 380, С. 124950 - 124950

Опубликована: Март 13, 2025

Язык: Английский

Процитировано

0
Evaluating the Adaptability and Sustainability of Different Straw Incorporation Strategies in Northeastern China: Impacts on Rice Yield Formation, Nitrogen Use Efficiency, and Temporal Soil Nutrient Dynamics DOI Creative Commons

Yuanyuan Sun,

B. C. Ren,

Liu Chang

и другие.

Agronomy, Год журнала: 2025, Номер 15(3), С. 729 - 729

Опубликована: Март 18, 2025

Straw incorporation effectively improves soil fertility and crop yield, its adaptation to single-season rice production in cold temperate regions is a current research focus. This study conducted two-year continuous situ field experiment with four treatments: no straw (CK), autumn rotary tillage (SC), plowing (SH), spring (ST). investigated the effects of on growth environment understand soil-crop interactions their impact yield. The results indicate that system Northeast China, reduces number tillers, dry matter accumulation, leaf area index early stage but promotes accumulation later stages. over two consecutive years increased yield by 2.07%, SC treatments showing optimal performance. could lead higher economic returns for farmers. Additionally, potentially increases total nitrogen organic (SOM) content topsoil, thus providing environmental benefits reducing need synthetic fertilizers. Factor analysis reveals enhances influencing nutrient levels stages, thereby improving recovery efficiency. By altering availability at different regimes regulate material strategy ‘source-sink’ relationship. provides theoretical basis enhancing through improved management strategies. These findings support policy initiatives promote large-scale commercial potential benefits.

Язык: Английский

Процитировано

0
Agricultural Cultivation Improved Soil Nitrogen Sequestration by Accelerating the Accumulation of Labile Nitrogen DOI
Shu‐Shen Liu,

J. J. Zhang,

Guodong Li

и другие.

European Journal of Soil Science, Год журнала: 2025, Номер 76(3)

Опубликована: Май 1, 2025

ABSTRACT Soil organic nitrogen (SON), particularly its labile fraction (LN), is pivotal in nutrient supply and soil fertility maintenance. However, the retention mechanisms of LN under low‐nitrogen conditions conservation agriculture remain unclear. This study, conducted Yellow River sedimentary area, applied SON functional fractionation (labile vs. stable pools) a coupled analytical framework particle composition, enzyme activity, management practices to explore vertical differentiation different land‐use types. Results showed that content was greater agricultural soils (381.36–467.85 mg/kg), primarily driven by elevated activities invertase alkaline phosphatase. Silt (< 50 μm) improved efficiency (SN) sequestration through organic‐mineral bonding, while sand particles (> 250 led increased leaching flux. Integrated fertilisation availability SN stability dual CN interactions activation pathways. These findings highlight LN's ‘rapid response, high loss’ behaviour sandy offer scientific basis for regulation fragile agroecosystems.

Язык: Английский

Процитировано

0
Response Patterns of Soil Nitrogen Cycling to Crop Residue Addition: A Review DOI

Yansheng Cao,

Yajun Xie, Tongbin Zhu

и другие.

Journal of soil science and plant nutrition, Год журнала: 2024, Номер 24(2), С. 1761 - 1774

Опубликована: Апрель 11, 2024

Язык: Английский

Процитировано

1
Long‐Term Biochar Application Improved Aggregate K Availability by Affecting Soil Organic Carbon Content and Composition DOI

Zhengrong Bao,

Wanning Dai,

Han Li

и другие.

Land Degradation and Development, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

ABSTRACT Straw biochar is an effective amendment at improving soil aggregate structure and increasing carbon potassium (K) content. However, little information available on the relationship between organic (SOC) aggregate‐associated K distribution under long‐term application conditions. To address this, a field trial established in 2013 was used to examine impact of (B 0 : B 1 2.625 t ha −1 year ) fertilizer (K 60 kg variation reveal associated influencing factors. A total four treatments , were included this study. The analysis results obtained 2021 showed that after 9 years' amendment, increased exchangeable (EK) nonexchangeable (NEK) pools by 27.40% 39.55%, respectively, increment primarily because enhanced > 0.25 mm fractions strengthened + adsorption capacity, which benefit from synergistic increase SOC humic acid (HA) content biochar. 13 C NMR applications altered chemical composition SOC, with outcome aromaticity hydrophobicity but decreased lipidation indicating complexity molecular eventually contributed strengthening macroaggregates stability capacity. correlation revealed EK NEK contents positively correlated HA contents, further proved significant mechanism for ameliorate availability.

Язык: Английский

Процитировано

0