A TĂ©cnica do Filme de Nutrientes (NFT) Ă© um mĂ©todo hidropĂŽnico onde um fluxo fino e contĂnuo de solução nutritiva flui ao longo do fundo de canais inclinados sobre as raĂzes nuas das plantas. As raĂzes superiores permanecem no ar Ășmido para obter oxigĂȘnio, enquanto as raĂzes inferiores absorvem ĂĄgua e minerais do filme que flui.
Fatos principais
- Shallow film of nutrient solution (2â3 mm deep) flows continuously through sloped channels
- Upper roots access atmospheric oxygen; lower roots absorb nutrients from the film
- Highly water-efficient â solution recirculates in a closed loop
- Best suited to fast-growing leafy crops and herbs
- Requires a reliable pump â power outages quickly stress roots
- Channel gradient of 1:30â1:40 (2â3 cm drop per metre) is critical for even flow