Abstract:

In order to determine the optimal crop rhizosphere ventilation volume, air compressor was used to supply gas, and three ventilation coefficient [0.4 (T1), 0.8 (T2) and 1.2 (T3)] were set to study the potted tomato growth, transpiration and associated physiological indices. The results showed that ventilation treatment could significantly improve the tomato plant stem diameter, leaf area index, leaf chlorophyll content and dry matter accumulation, and all had the highest value under the T2 treatment; the cumulative transpiration of tomato plant are different under different ventilation volume in experiment times, which finally showed: T2>T3>T1>CK. Rhizosphere ventilation had significantly effect on potted tomato yield and crop water productivity. The fruit yield and dry matter accumulation reached highest value under T2 treatment, which was the most conducive to the growth of potted tomato.