Effect of Different LED Lighting Formulas Combined with Organic and Inorganic Fertilisers on the Growth Dynamics and Nitrate Accumulation of Greenhouse Leafy Vegetables

Abstract

Facility agriculture overcomes natural constraints through precise environmental control, with light environment control being a
core component. Traditional supplementary lighting technologies suffer from high energy consumption and inflexible spectral characteristics,
whereas LED lighting, with its customizable wavelengths, cool light properties, and energy-saving advantages, has emerged as a key technological enabler for optimizing facility light environments. Especially for leafy vegetables, which are highly sensitive to light requirements,
precise light formulassuch as the ratio of red and blue light and the supplementation of UV/far-red lightcan significantly influence photosynthetic carbon assimilation, morphological development, and secondary metabolism, directly determining yield and quality formation.