Effects of nanobubble in subsurface drip irrigation on the yield, quality, irrigation water use efficiency and nitrogen partial productivity of watermelon and muskmelon
Jing He 1,2
Bin Liu 1,2
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College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, PR China
Engineering Research Centre for Agricultural Water-Saving and Water Resources, Ministry of Education, China Agricultural University, Beijing 100083, PR China
College of Mechanical and Electrical Engineering, Beijing Vocational College of Agriculture, Beijing 102208, PR China
Final revision date: 2022-05-13
Acceptance date: 2022-05-25
Publication date: 2022-07-01
Int. Agrophys. 2022, 36(3): 163–171
  • Proposing a method as nanobubble water oxygen irrigation, could achieve water-saving, increasing production, and lifting quality in the greenhouse synergistically.
  • The nanobubble water drip irrigation with reducing the volumes of water and fertilization by 20% was positive effect to crop.
  • Useing less water or fertilizer with nanobubble water could in higher overall benefits than ordinary method.
Improving crop yield and quality, as well as water and fertilizer use efficiency in a synergetic manner is a substantial challenge. It involves limits to the sustainable development of protected agriculture. Here, we propose a new irrigation method using nanobubble water through subsurface drip irrigation to improve the agricultural performance of crops. Experiments were conducted to evaluate the effects of nanobubble water on growth, yield, quality, irrigation water use efficiency, and the nitrogen partial productivity of greenhouse watermelon and muskmelon. The results showed that in nanobubble water conditions, reducing the amount of irrigation or fertilization by 20% had no negative impacts on the tested crops, instead there were increases in the yield, quality, irrigation water use efficiency and nitrogen partial productivity of the two crops. When irrigation and fertilization were both decreased by 20%, the irrigation water use efficiency was improved by 82.6 and 70.2%, the nitrogen partial productivity increased by 68.9 and 30.4%, vitamin C increased by 50.1 and 66.7% which was significant. This may be because nanobubble water reduced the redundant growth of crops, and promoted the balance between individual development and production. Moreover, nanobubble water finally achieved increased economic benefits by reducing the input of irrigation and fertilization. Therefore, we suggest that 80% irrigation and 80% fertilization with nanobubble water could be adopted for Cucurbitaceae in greenhouse conditions. This method also has reference significance for reducing agricultural water input.
The authors wish to thank the anonymous reviewers for their valuable comments and suggestions that helped improve the manuscript.
This work was supported financially by the Science and Technology Innovation Project of Beijing Vocational College of Agriculture (XY-YF-20-14, 2020-2021), the National Natural Science Foundation of China (51979274, 2020-2023 and 52109070, 2022-2023), and the China Postdoctoral Science Foundation (2020M680764, 2021-2022).
The authors declare no conflict of interest.
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