Spatial Characteristics of Transfer Plots and Conservation Tillage Technology Adoption: Evidence from a Survey of Four Provinces in China

Guo, Yang; Cui, Meiling; Xu, Zhigang

doi:10.3390/agriculture13081601

Cited by 8 publications

(8 citation statements)

References 23 publications

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“…On the other hand, tillage leads to organic matter oxidation, reducing structural stability. Protective tillage measures centered on reduced tillage, no-tillage, and straw returning reduce soil disturbance intensity and frequency, mitigating the disruption of soil aggregates and contributing to the restoration of soil structural stability to some extent [24]. Under the STC and NTC treatments, the SOC content in the 0-10 cm soil layer is highest and significantly higher than in the 10-30 cm soil layer.…”

Section: Effect Of Straw Returning On Soil Organic Carbon and Total N...mentioning

confidence: 99%

Effects of Straw Returning on Soil Aggregates and Its Organic Carbon and Nitrogen Retention under Different Mechanized Tillage Modes in Typical Hilly Regions of Southwest China

Huang,

Huang

et al. 2024

Agronomy

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Tillage modes and straw returning influence soil aggregate stability and the distribution of organic carbon (C) and nitrogen (N) in aggregates of different particle sizes. In the typical hilly regions of southwest China, the predominant soil type is purple soil, characterized by heavy texture and high stickiness, with relatively lower soil fertility compared to other soil types. The improper use of fertilizers and field management practices further exacerbates soil compaction. However, abundant straw resources in the region provide an opportunity for comprehensive straw utilization. The effective utilization of straw resources is of significant importance for stabilizing agricultural ecological balance, improving resource utilization efficiency, and alleviating ecological pressure. Previously, most studies have focused on the impact of different mechanized tillage systems on the physical and chemical properties of soil in hilly areas, while research on the preservation of water-stable aggregates’ organic C and N content remains limited. In this study, the soil properties of fields under a winter pea–summer corn rotation for two years were studied with regards to the effects of straw returning on its water-stable aggregate distribution, macroaggregate content (R0.25), mean weight diameter (MWD), geometric mean diameter (GMD), and the organic C and N content in soil aggregates of different particle sizes and at different depths. The effects of five different tillage modes were assessed, namely rotary tillage with straw mixed retention (RTM), conventional tillage with straw burial retention (CTB), no-tillage with straw covered retention (NTC), subsoiling with straw covered retention (STC), and no-tillage without straw retention (NT). Based on the study results, under different tillage modes, straw returning effectively enhanced the soil organic carbon (SOC) and total nitrogen (TN) reserves at the plow layer (0–30 cm), SOC increased by 17.2% to 88%, and TN increased by 8.6% to 85.9%. At the same time, the content of 0.25–2 mm aggregates increased under the straw-return treatments under different tillage patterns. The NT treatment had the lowest R0.25 and MWD and GMD values for soil aggregates at different depths, which were significantly different (p < 0.05) from the other treatment modes. The correlation coefficients between SOC and soil aggregate stability indices ranged from 0.68 to 0.90, with most of them showing highly significant positive correlations (p < 0.01). In conclusion, straw returning under different tillage systems has improved soil aggregate stability and promoted soil structure stability. Specifically, the STC treatment has shown more pronounced effects on soil improvement in the upper soil layer of the hilly regions in southwest China, while the RTM treatment is beneficial for improving the lower soil layer. Therefore, the comprehensive experimental results indicate that the combination of STC and RTM treatments represents the most promising mechanized tillage and straw returning practices for the hilly regions in southwest China.

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Section: Effect Of Straw Returning On Soil Organic Carbon and Total N...mentioning

confidence: 99%

Effects of Straw Returning on Soil Aggregates and Its Organic Carbon and Nitrogen Retention under Different Mechanized Tillage Modes in Typical Hilly Regions of Southwest China

Huang,

Huang

et al. 2024

Agronomy

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“…Spatial econometrics incorporates spatial factors and unveils the spatial correlation of economic characteristics or natural attributes across regions [49]. From a spatial perspective, neighboring regions often share similar resource endowments, cultivation structures, production methods, and geomorphological features, fostering spatial interaction in FNSP between these regions [50]. Moreover, contiguous farmland land borders between neighboring regions can trigger environmental effects of farmland transfer, generating spillovers.…”

Section: Theoretical Analysesmentioning

confidence: 99%

Can Farmland Transfer Reduce Fertilizer Nonpoint Source Pollution? Evidence from China

Bai,

Zhang,

et al. 2024

Land

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China repeatedly surpasses international fertilizer safety limits, resulting in significant fertilizer nonpoint source pollution (denoted as FNSP), which adversely affects food security and agricultural sustainability. Simultaneously, farmland transfer has emerged as a pivotal strategy for transitioning between agricultural production methods. The present study aims to investigate the relationship between farmland transfer and FNSP. In line with the aim of the study, based on China’s panel data from 2005 to 2020, the fixed-effect model, mediating-effect model, spatial Durbin model, and threshold regression model are employed. The findings reveal that farmland transfer exerts a significant inhibitory effect on FNSP. The reduction in FNSP through farmland transfer is facilitated by the decrease in fertilizer application intensity and increase in compound fertilizer application. Further, farmland transfer demonstrates a significant spatial spillover effect on FNSP, mitigating pollution levels within regions and influencing neighboring areas. Moreover, a nonlinear relationship between farmland transfer and FNSP is observed. These findings contribute to understanding the intricate dynamics between agricultural land management strategies and environmental sustainability, offering valuable insights for policymakers and stakeholders engaged in promoting green and sustainable agricultural practices.

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“…The maize planter was propelled by a PTO shaft of the soil bin tester, while two sets of gear reducers facilitated the rotational motion of the anti-blocking mechanism. The soil density was managed at 1.70 g/cm 3 with the average moisture content of the 0-5 cm soil layer as 10.07%, and 13.51% for the next 5 cm soil depth. The soil hardness was 0.96 MPa.…”

Section: Description Of Anti-blocking Mechanismmentioning

confidence: 99%

“…Agriculture 2024, 14, 1001 2 of 15 Incorporating crop residue cover, as a fundamental tenet of conservation agriculture, offers multifaceted benefits. It not only enhances straw utilization efficiency and mitigates pollution [3] but also mitigates soil erosion [4], enhances the physico-chemical properties of soil [5], and boosts crop yield [6]. However, the presence of straw residue covers poses challenges to maize planting in the Huang-Huai-Hai Plain.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of Straw Motion under the Action of an Anti-Blocking Mechanism for a No-Till Maize Planter

Zhang,

Fang,

et al. 2024

Agriculture

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To address the low clearance rate issue of the anti-blocking mechanism for maize no-till planters in the Huang-Huai-Hai Plain of China, experiments and simulations were conducted to analyze the individual and collective movements of straw under the action of the round roller-claw anti-blocking mechanism. A tracer-based measurement method for straw displacement was applied firstly. Experimental results showed that the straw forward displacement could be characterized by the average horizontal displacements of longitudinal and lateral tracers, while the straw side displacement could be characterized by the lateral displacement of the longitudinal tracer. The straw forward displacement was 58.95% greater than the side displacement. Forward, side, and total displacements of straw increased as the mechanism’s forward speed increased from 3 km/h to 7 km/h, with corresponding rates of increase at 233.98%, 43.20%, and 162.47%, respectively. Furthermore, a model of straw–soil–mechanism interaction was constructed in EDEM 2022 software. The relative error between experimental and simulated straw clearance rates was 11.20%, confirming the applicability of the simulation model for studying straw–soil–mechanism interaction. Based on the simulation model, three straw tracers of different lengths were selected to study the motion behavior of straw. It was inferred that despite differences in straw length, the movement behaviors of the three straw tracers under the influence of the anti-blocking mechanism were similar. Additionally, longer straws exhibited greater displacements in all directions. This paper serves as a reference for studying straw motion behavior influenced by anti-blocking mechanisms.

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Spatial Characteristics of Transfer Plots and Conservation Tillage Technology Adoption: Evidence from a Survey of Four Provinces in China

Cited by 8 publications

References 23 publications

Effects of Straw Returning on Soil Aggregates and Its Organic Carbon and Nitrogen Retention under Different Mechanized Tillage Modes in Typical Hilly Regions of Southwest China

Effects of Straw Returning on Soil Aggregates and Its Organic Carbon and Nitrogen Retention under Different Mechanized Tillage Modes in Typical Hilly Regions of Southwest China

Can Farmland Transfer Reduce Fertilizer Nonpoint Source Pollution? Evidence from China

Experimental and Numerical Analysis of Straw Motion under the Action of an Anti-Blocking Mechanism for a No-Till Maize Planter

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