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Combining magnetized water with biodegradable film mulching reshapes soil water-salt distribution and affects processing tomatoes' yield in the arid drip-irrigated field of Northwest China

Author

Listed:
  • Zhou, Zhenpeng
  • Liu, Jian
  • Zhang, Jinzhu
  • Li, Wenhao
  • Wen, Yue
  • Chen, Rui
  • Chen, Pengpeng
  • Li, Haiqiang
  • Gao, Xuehui
  • Zhu, Yan
  • Wang, Zhenhua

Abstract

In arid areas, biodegradable film has recently had the potential to replace polyethylene (PE) film to address plastic pollution. However, the positive effect of biodegradable film on soil moisture and salt control is weaker than that of PE film. Magnetized irrigation water technology is expected to compensate for this limitation. This study comprised a field experiment in 20212023 to study how two types of biodegradable film (M1, black; M2, transparent) and six magnetization intensity on irrigation water (T0, 0 Gs; T1, 1000 Gs; T2, 2000 Gs; T3, 3000 Gs; T4, 4000 Gs; T5, 5000 Gs) affect the degradation rate of biodegradable film, soil watersalt distribution, growth, and quality of processing tomatoes. The traditional PE film mulching and non-magnetized irrigation were used as the control group (MPET0). The results demonstrated that magnetized water irrigation slowed down the degradation rate of biodegradable film. In addition, the magnetized irrigation water can redistributed the soil water-salt patterns under the biodegradable film, improving the soil water content and salt leaching efficiency, with better results in M1 than in M2. Moreover, magnetized water irrigation promoted the growth of tomato leaf area under the biodegradable film, enhancing photochemical efficiency and potential activity of PSII, thereby improving fruit yield, quality, and water use efficiency of tomato. Principal component analysis showed that the comprehensive score of M1T3 treatment was the highest throughout the three years. Furthermore, M1T3 treatment has the highest processing tomato economic benefits during 2021–2023 (24634986 CNY hm2 more than MPET0). Therefore, the use of 3000 Gs magnetized irrigation water combined with black biodegradable film is conducive to improving soil water and salt conditions, reducing residual film pollution, and improving the yield and quality of processing tomatoes, thus ensuring the sustainable development of oasis agriculture.

Suggested Citation

  • Zhou, Zhenpeng & Liu, Jian & Zhang, Jinzhu & Li, Wenhao & Wen, Yue & Chen, Rui & Chen, Pengpeng & Li, Haiqiang & Gao, Xuehui & Zhu, Yan & Wang, Zhenhua, 2024. "Combining magnetized water with biodegradable film mulching reshapes soil water-salt distribution and affects processing tomatoes' yield in the arid drip-irrigated field of Northwest China," Agricultural Water Management, Elsevier, vol. 303(C).
    • Handle: RePEc:eee:agiwat:v:303:y:2024:i:c:s0378377424003561
    DOI: 10.1016/j.agwat.2024.109021
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