改善水培作物根际氧气供给的原理和实践

Improving aeration in hydroponics Principle and practice:

植物根系要维持其正常呼吸，生长和功能，必须有足量的氧气供应。当根系处于缺氧条件时，其生长、水分和养分吸收减少，从而影响了地上部生长以及产量〔２５，２６〕。另外，处于缺氧胁迫的根系抗性较差，容易成为微生物或病原菌侵染的目标〔１７〕。作物栽培中缺氧情况是...

We reviewed the consumption of oxygen by roots and microorganisms and the uptake pathway of oxygen by roots, and discussed the oxygenation principles and the practical methods used in modern hydroponic systems. The conclusions are: in order to improve the aeration in hydroponic systems, we should control the length of culture bed, minimize the consumption of oxygen by microorganisms, increase the fransfer rate of oxygen into the culture system, and utilize the bio-aeration characteristics of root system.