Effects of Straw Decomposition on Soil Surface Evaporation Resistance and Evaporation Simulation

Plants, Journal Year: 2025, Volume and Issue: 14(3), P. 434 - 434

Published: Feb. 2, 2025

As a prominent agricultural country, China has widely implemented returning straw to the field in production. However, as decomposition of progresses, physical properties soil change, inevitably leading alterations surface evaporation model. This study investigated variations rate, moisture content over 60 days after field, and bare through two leaching pond experiments. Through retention curves at different degrees decomposition, this analyzed impact on soil’s water capacity. Based measured data, formulated models for resistance varying decomposition. With comparison contrast between models, clarified resistance. The main conclusions are following: decreases exponentially time and, 40 under is higher than that soil. decreases, cumulative from increases linearly. decomposed lower soil, with relative reduction ranging 3.08% 32.2%. significantly enhances capacity medium-to-high suction range. surface, greater degree more significant enhancement effect. research findings not only provide scientific basis management, but also possess practical implications guiding farmers adopt effective measures.

Language: Английский

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Analysis of the formation process of a natural fertilizer in the loess area

Open Geosciences, Journal Year: 2025, Volume and Issue: 17(1)

Published: Jan. 1, 2025

Abstract In the Loess Plateau, farmers usually collect surface soil of terrace sections for use as a fertilizer. Samples were taken at Plateau in Yan’an City to analyze distribution patterns on section different types, including years (2, 6, and 10 years), slope aspects (shady sunny slope), vertical heights (0.2, 1, 1.8 m from ground), depths (0–1, 1–3, 3–5 cm soil). The results showed that (1) with increase years, under influence natural factors such temperature, sunlight, moisture, nutrients gradually activated enriched, enrichment effect 10-year was most significant. (2) Under temperature depth increased, values available potassium total nitrogen decreased. mainly enriched could be used fertilizers. (3) study area, when ground different, differences not measured rich potassium. research confirmed scientific nature local farmers’ collection fertilizers have important theoretical reference value rapid ripening raw land remediation projects production ecological

Language: Английский

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Response of Runoff, Sediment Yield, and Runoff‐Related Dissolved Organic Carbon Loss to Variable Straw Mulching Rates on Sloping Lands of Regosols

Land Degradation and Development, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 19, 2024

ABSTRACT Dissolved organic carbon (DOC), an fraction with high activeness and mobility, migrated by runoff is a key part in cycle. A rational straw mulching rate can be regulated to obtain maximum benefits while controlling sediment yield on sloping lands. However, little remains known about the optimal rates required for effectively reducing loss of DOC runoff. Therefore, overcome existing limitations, this study investigated effects modified maize during runoff, utilizing indoor rainfall simulation. Five rates, including 0, 0.2, 0.4, 0.6, 0.8 kg m −2 [control (CK) treatments (T1, T2, T3, T4), respectively], were tested combination three slope gradients (10°, 15°, 20°) evaluate how influences yield, runoff‐related under heavy intensity 90 mm h −1 . Our results showed that various did not significantly differ rates; however, reduced concentration yield. Moreover, reduction increased increase rate. Compared CK, T1 resulted 63% at 20°. Additionally, T2 caused 8% 7.2% both 10° 15° slopes. Conversely, T3 T4 54.1%–80.8% 51.1%–65.2%, respectively, across all gradients. These suggested 0.2–0.4 may potentially hold significant importance optimizing use sustainable management practices agricultural

Language: Английский

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Effects of Maize Straw Return Modes on Soil Organic Carbon Content and Aggregate Stability in a Mollisol in Northeast China

Moscow University Soil Science Bulletin, Journal Year: 2024, Volume and Issue: 79(5), P. 693 - 702

Published: Dec. 1, 2024

Language: Английский

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