Plastic Film Mulching Boosts Maize Yield and Optimizes Carbon Efficiency in Dryland Farming

Strategic Insights -

Research conducted by Jianjun Yang and his team at the Institute of Biology, Gansu Academy of Sciences, has discovered that plastic film mulching (PM) significantly increases maize yield and carbon emission efficiency in dryland farming. The study, published in the journal Agriculture, found that PM increased maize yield by 33.6-165% and reduced carbon emission sensitivity to temperature changes, especially in colder and drier regions.

Key Takeaways:

  • Plastic film mulching increased soil respiration, heterotrophic respiration, and autotrophic respiration by 10-20% in warmer and semi-arid regions, and by 5-10% in colder and drier regions.
  • The application of PM reduced temperature sensitivity of soil respiration and autotrophic respiration by 5-10% in warmer regions, but had no significant effect on heterotrophic respiration.
  • The use of PM improved carbon emission efficiency (CEE) by 67% in colder and drier regions, indicating a more efficient use of carbon emissions.
  • The study concluded that PM can be a viable solution to enhance maize yield while optimizing carbon efficiency in dryland farming systems, especially in regions with high temperatures and low soil moisture.
  • The research also highlighted the importance of microbial biomass carbon (MBC) and dissolved organic carbon (DOC) in regulating soil respiration.
  • The PM treatment increased maize yield by 33.6-165% due to enhanced root biomass and improved microclimate.

Statistics:

  • Increased maize yield by 33.6-165% due to PM.
  • PM increased soil respiration by 10-20% in warmer regions.
  • PM reduced temperature sensitivity of soil respiration by 5-10% in warmer regions.
  • PM improved carbon emission efficiency (CEE) by 67% in colder and drier regions.
  • The structural equation modeling revealed that Rt and Ra were mainly driven by soil temperature and root biomass, while Rh was more influenced by microbial biomass carbon (MBC) and dissolved organic carbon (DOC).

Sources:

  • Agriculture. (2025). Plastic Film Mulching Regulates Soil Respiration and Temperature Sensitivity in Maize Farming Across Diverse Hydrothermal Conditions. 15(15), 1667. (Available at https://doi-org.sdpl.idm.oclc.org/10.3390/agriculture15151667)
  • The study was supported by the Gansu Provincial Youth Science And Technology Foundation and the Gansu Academy of Sciences Startup Fund.
  • NewsRx LLC. (2025). Institute of Biology Researchers Publish New Studies and Findings in the Area of Agriculture (Plastic Film Mulching Regulates Soil Respiration and Temperature Sensitivity in Maize Farming Across Diverse Hydrothermal Conditions). Agriculture Week, 107.