抄録
Sapling cultivation technology was developed to improve the growth of afforested trees in salt-affected land. The reduction in the production of wheat, caused by salt-affected soils, had been reported in the wheat belt of Western Australia. A large amount of evaporation of groundwater from the soil surface results in the concentration of soluble salts on the topsoil. Therefore, it is necessary to sink the groundwater level for environmental restoration. One of the most promising ways to prevent the progress of saline soil is afforestation. With our technology, plants can use more underground water and be less affected by salt by growing deeper roots. We considered the results of our experiment from the following perspectives: height growth (growth in height), vertical distribution of root biomass, total biomass, and biomass allocation. In particular, Eucalyptus rudis x E. camaldulensis could promote the growth of deeper roots and achieve the largest biomass of the tested species. We also confirmed that the most suitable pipe size for this species was φ10 cm. In conclusion, the results suggest that this technique will be useful for effective afforestation in salt-affected land.
