Ultrafine and nano-bubble technology has demonstrated a significant growth-promoting effect in soilless cultivation.
2026-06-15
This experiment used lettuce as the test subject to compare the cultivation performance of conventional nutrient solution with that of an ultrafine nanobubble‑oxygenated nutrient solution. The results showed that, over the same growth period, the experimental group exhibited markedly superior growth, with average plant volume and weight both increasing by more than 20% compared to the control group; the leaves were tightly layered and firm, with a plump texture. The root system was also more developed, featuring a robust taproot and dense lateral roots, forming a visibly abundant root mass. Analysis suggests that ultrafine nanobubbles possess characteristics such as a large specific surface area, prolonged residence time in water, and high mass‑transfer efficiency, enabling sustained enhancement of dissolved oxygen levels in the nutrient solution and strengthening root respiration and nutrient uptake. Moreover, their surface charge and the micro‑jets generated upon collapse may further stimulate root development and metabolic activity, thereby comprehensively promoting rapid, healthy plant growth. This technology offers an efficient, environmentally friendly new approach for improving both yield and quality in soilless cultivation.
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