Abstract: In order to investigate the effect of active water on the root growth of tomato seedlings, the active water irrigation experiment was carried out in greenhouse with control of conventional irrigation, the root
growth indexes of tomato per plant (root total length, root surface area, root volume, average diameter, root fresh mass and root dry mass) after 21, 36, 41 days of treatment were compared and analyzed. The results showed that, after 21 days of active water irrigation, root total length, root surface area, root volume, average diameter, root fresh mass and root dry mass per plant increased by 56.65%, 70.73%, 93.33%,
11.41%, 52.17% and 53.49% compared with the control, respectively, and indexes (except the average diameter) had significant differences among treatments. After 36 days of treatment, the total root length,
root surface area, root volume, average diameter, root fresh mass and root dry mass per plant increased by 76.08%, 82.01%, 80.00%, 7.39%, 53.64% and 75.98% compared with the control, respectively, with significant differences in all indexes (except average diameter). The growth indexes were continuously optimized on the basis of treatment for 21 days. After 41 days of treatment (5 days after tomato planting), the
total root length, root surface area, root volume, average diameter, root fresh mass and root dry mass per plant increased by 75.19%, 85.71%, 77.27%, 5.92%, 63.05% and 76.02% compared with the control, respectively, with signifi cant differences in all indexes (except average diameter), and the plant growth was better, with leaf length, stem diameter and leaf number per plant signifi cantly increased by 17.15%, 17.22% and 31.2%, respectively. The results indicated that the active water was benefi cial to the root growth of tomato seedlings. |