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Effects of long-term biodegradable film mulching on yield and water productivity of maize in North China Plain

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Listed:
  • Shangguan, Xiudi
  • Wang, Xin
  • Yuan, Meng
  • Gao, Mingliang
  • Liu, Zhendong
  • Li, Ming
  • Zong, Rui
  • Sun, Chitao
  • Zhang, Mingming
  • Li, Quanqi

Abstract

Biodegradable films are considered ideal alternatives to polyethylene films because of their advantages in increasing crop yield and controlling soil pollution. However, the influences of biodegradable film mulching on soil physicochemical environments and water productivity after long-term mulching remain poorly understood. Therefore, a field experiment after long-term mulching (since 2016) was conducted to explore the effects of black biodegradable film (BB), transparent biodegradable film (TB), and traditional polyethylene film (PE) on soil physicochemical environments, aboveground biomass accumulation, grain yield, evapotranspiration, and water productivity (WP) of maize in the 2021 and 2022 in the North China Plain. The results showed that polyethylene films and biodegradable films had a similar ability to preserve soil moisture, promote maize growth, reduce evapotranspiration, and increase WP. Moreover, the performances of BB were more equivalent to PE, and there was no significant difference on WP and yield under BB and PE. Compared with traditional flat planting without mulching (CK), BB and PE significantly increased yield (9.5 % and 12.7 % in 2021; 5.25 % and 6.37 % in 2022) and WP (11.54 % and 21.47 % in 2021; 24.28 % and 23.42 % in 2022). Film mulching treatments increased the soil organic carbon sequestration rate, and the content of soil organic carbon, microbial activity, and urease activity in the 0–20 cm soil layer compared with CK. According to structural equation modeling, the increasing soil water storage because of films mulching positively influenced yield by enhancing enzyme activities which were related to soil nutrients. Over all, these results showed that black biodegradable film is an ideal replacement for polyethylene films under long-term mulching conditions because of its comparable agronomic performance and influence on soil physicochemical environments in the North China Plain.

Suggested Citation

  • Shangguan, Xiudi & Wang, Xin & Yuan, Meng & Gao, Mingliang & Liu, Zhendong & Li, Ming & Zong, Rui & Sun, Chitao & Zhang, Mingming & Li, Quanqi, 2024. "Effects of long-term biodegradable film mulching on yield and water productivity of maize in North China Plain," Agricultural Water Management, Elsevier, vol. 304(C).
    • Handle: RePEc:eee:agiwat:v:304:y:2024:i:c:s037837742400430x
    DOI: 10.1016/j.agwat.2024.109094
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