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

Agronomy, Journal Year: 2025, Volume and Issue: 15(3), P. 729 - 729

Published: March 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.

Language: Английский

Effects of Different Straw Return Methods on Farmland Carbon Footprint and Water Footprint

Agriculture, Journal Year: 2024, Volume and Issue: 15(1), P. 73 - 73

Published: Dec. 31, 2024

Straw return is an effective agricultural measure that influences the ecological environment. In context of global climate change and need for sustainable development, it essential to explore how straw methods affect This study conducted a two-year field experiment comparing different treatments: no (CK), directly (SR), returned in deep ditches (ISR). The results showed SR treatment increased soil dissolved organic carbon (DOC) (21.7~25.8%) nitrogen (DON) (8.5~43.8%) compared CK. ISR significantly enhanced DOC (13.1~33.0%) DON (14.2~50.8%). Both treatments also improved maize growth indicators, such as leaf area index (LAI), stem biomass, grain biomass. terms environmental effects, reduced N2O emissions lowered footprint (CF) water (WF). Specifically, yield-scale (CFy) (WFy) were by 12.0% 9.1%, respectively, 2023. Correlation analysis revealed key factors these benefits. Furthermore, reduction WF CF was closely linked SWC higher biomass all organs. Therefore, we demonstrated not only promotes accumulation but effectively mitigates consumption on farmland. It may be related boosting levels. Overall, method holds promise supporting farming practices.

Language: Английский