Research on the Synergistic Mechanism of Maize–Soybean Rotation and Bio-Organic Fertiliser in Cold Regions DOI Creative Commons
Zijian Wang, Hao Tian, Nian X. Sun

и другие.

Agronomy, Год журнала: 2025, Номер 15(5), С. 1256 - 1256

Опубликована: Май 21, 2025

Aiming to address a series of problems caused by inefficient nitrogen fixation in soybean within the maize–soybean rotation system under cold-region conditions Heilongjiang Province, China—such as reduced crop yields, declining soil fertility, and increased dependence on chemical fertilisers—this study investigated partial substitution fertilisers with bio-organic at replacement rates 10%, 20%, 30% during cultivation. The treatments included (OB1, OB2, OB3), inactivated (O1, O2, O3), Bacillus subtilis (B1, B2, B3), control (CK) conventional application fertilisers. In rotational maize cropping phase, 50% reduction was applied. results showed that replacing 20% fertiliser (OB2 treatment) yielded most significant increase productivity economic return. Compared CK, OB2 treatment yield 26.56%, 26.69%, use efficiency 3–5%. According GRA-TOPSIS model, demonstrated greatest capacity improve quality system. At maturity stage, total organic carbon, available phosphorus, protease activity 25.36%, 22.20%, 87.50%, respectively, compared CK. maturity, ammonium 80.24% 62.47%, respectively. Bio-organic combine benefits substrates those functional microorganisms. Correlation, cluster, interaction analyses revealed synergistic mechanisms between cold regions are primarily reflected improved quality, enhanced nutrient cycling efficiency, root nodules, stimulated microbial activity, greater resilience environmental stress. Sustainable agricultural production can be achieved through integrated functioning these components. This provides theoretical basis for enhancing systems climatic conditions.

Язык: Английский

Effects of Deep Application of Fertilizer on Soil Carbon and Nitrogen Functions in Rice Paddies DOI Creative Commons

Qihuan Xie,

Xiangbin Yao,

Ya Yang

и другие.

Agronomy, Год журнала: 2025, Номер 15(4), С. 938 - 938

Опубликована: Апрель 11, 2025

Efficient fertilization is vital for rice production and sustainable agriculture. Conventional (CK) suffers from low efficiency environmental pollution, whereas side-deep (SF) offers an efficient, eco-friendly alternative. The changes in microbial carbon cycling functional genes induced by SF paddy soils remain unclear. This study investigates the effects of CK on soil organic (SOC), total nitrogen (TN), communities, carbon- nitrogen-cycling double-cropping paddies through field experiments. Results reveal that significantly increases TN deeper layers (10–20 cm), enhancing expression fixation (e.g., K02591 K02588) metabolism pathways, alongside boosting Chloroflexi Planctomycetes abundance. In contrast, promotes SOC accumulation upregulates K01179 K01728) surface (0–10 cm). layers, elevates reduction gene abundance K02591) while suppressing denitrification assimilatory nitrate reduction, enhances dissimilatory K02568). Redundancy analysis (RDA) shows properties (pH, SOC, TN) drive community structure, with Actinobacteria positively linked to TN. These findings demonstrate optimizes improving use growth, favors shallow-layer sequestration. provides a scientific foundation tailoring strategies depth, leveraging dynamics enhance fertility sustainability production.

Язык: Английский

Процитировано

0
Microstructure and Microorganisms Alternation of Paddy Soil: Interplay of Biochar and Water-Saving Irrigation DOI Creative Commons
Jiazhen Hu, Shihong Yang, Wim Cornelis

и другие.

Plants, Год журнала: 2025, Номер 14(10), С. 1498 - 1498

Опубликована: Май 16, 2025

Biochar application and controlled irrigation (CI) enhance water conservation, lower emissions, increase crop yields. However, the synergistic effects on relationship between paddy soil microstructure microbiome remain poorly understood. This study investigates impact of different regimes biochar applications physicochemical properties, microstructure, composition functions microorganisms in soil. The CA treatment (CI with 60 t/hm2 biochar) showed higher abundances Mycobacteriaceae, Streptomycetaceae, Comamonadaceae, Nocardioidaceae than CK without biochar), which was attributed to two main factors. First, increased pore throat equivalent radius (EqR), surface area (SAR), total number (TTN), volume fraction (VF), connected porosity (CP) by 1.47–9.61%, 7.50–25.21%, 41.55–45.99%, 61.12–73.04%, 46.36–93.75%, respectively, thereby expanding microbial habitats providing refuges for microorganisms. Second, cation exchange capacity (CEC), mean weight diameter (MWD), organic carbon (SOC), nitrogen (TN) 22.14–25.06%, 42.24–56.61%, 22.98–56.5%, 9.41–87.83%, reinforcing structural stability storage, promoted community diversity. FK (flood no significant correlations these environmental Compared metabolites at Level 2 3, exhibited levels citrate cycle, indicating that changes oxygen environments due CI reduced matter decomposition cycle. strongly correlated (VF, CP, TTN, SAR, EqR), notably enhanced related synthesis degradation ketone bodies, suggesting can mitigate adverse metabolomic CI. These results indicate fields highlights critical role function better supports sustainability.

Язык: Английский

Процитировано

0
Research on the Synergistic Mechanism of Maize–Soybean Rotation and Bio-Organic Fertiliser in Cold Regions DOI Creative Commons
Zijian Wang, Hao Tian, Nian X. Sun

и другие.

Agronomy, Год журнала: 2025, Номер 15(5), С. 1256 - 1256

Опубликована: Май 21, 2025

Aiming to address a series of problems caused by inefficient nitrogen fixation in soybean within the maize–soybean rotation system under cold-region conditions Heilongjiang Province, China—such as reduced crop yields, declining soil fertility, and increased dependence on chemical fertilisers—this study investigated partial substitution fertilisers with bio-organic at replacement rates 10%, 20%, 30% during cultivation. The treatments included (OB1, OB2, OB3), inactivated (O1, O2, O3), Bacillus subtilis (B1, B2, B3), control (CK) conventional application fertilisers. In rotational maize cropping phase, 50% reduction was applied. results showed that replacing 20% fertiliser (OB2 treatment) yielded most significant increase productivity economic return. Compared CK, OB2 treatment yield 26.56%, 26.69%, use efficiency 3–5%. According GRA-TOPSIS model, demonstrated greatest capacity improve quality system. At maturity stage, total organic carbon, available phosphorus, protease activity 25.36%, 22.20%, 87.50%, respectively, compared CK. maturity, ammonium 80.24% 62.47%, respectively. Bio-organic combine benefits substrates those functional microorganisms. Correlation, cluster, interaction analyses revealed synergistic mechanisms between cold regions are primarily reflected improved quality, enhanced nutrient cycling efficiency, root nodules, stimulated microbial activity, greater resilience environmental stress. Sustainable agricultural production can be achieved through integrated functioning these components. This provides theoretical basis for enhancing systems climatic conditions.

Язык: Английский

Процитировано

0