Abstract:

This research was concerned with the effects of different concentrations of sodium selenite applied by foliar
spraying, foliar spraying + soil deep-ditch fertilization or soil deep-ditch fertilization on selenium (Se) content, the
accumulation of cadmium (Cd) and lead (Pb) and fruit quality in kiwifruits of the cultivar Guichang (Actinidia deliciosa
cv. Guichang). The results indicated that the suitable amount of sodium selenite could increase Se content, decrease
the absorption of Cd and Pb, and improve fruit quality in kiwifruit. Different concentrations of sodium selenite could
significantly increase Se content in kiwifruit by 0.002 9–0.050 5 mg/kg, and notably reduce Cd by 6.98%–28.49% and Pb by
23.46%–51.03%. Moreover, it could promote improvements in the nutritional and exterior quality and fruit yield of kiwifruit.
The effect of three fertilization regimes was in the order of foliar spraying + soil deep-ditch fertilization > foliar spraying >
soil deep-ditch fertilization, when compared with the control. It was recommend that foliar spraying or foliar spraying + soil
deep-ditch fertilization of sodium selenite could be applied on kiwifruit at doses of 5.00–10.00 mg/L.

Key words: kiwifruit, sodium selenite, Se content, Cd and Pb accumulation, quality