Abstract:

 Proper foliar spray dose of Serich nutrient solution is important for avoiding leaf damage by excessive dose of sprayed selenium (Se) and realizing Se accumulation in kernel of wheat and cost reduction. In this study, we examined the effects of foliar spray dose of Se-rich nutrient solution (Dorina) on the yield and flour quality of spring wheat (Ningchun 4, being widely cultivated in China). The results showed that 7500 mL·hm-^2 of Se-rich nutrient solution (with Se concentration of 61.5 g·hm^-2) was the best dose, which increased the yield of spring wheat to 600 kg·hm^-2 (with a 11.8% enhancement). The Se content in flour was 6.6 times higher than that in control, while zinc and protein content were increased by 5.4% and 12.4%, respectively. This dose of Serich nutrient solution (Dorina) could meet the demand of Serich wheat production. Our results provide scientific support for its wide use and the development of local selenium industry.

Key words: flour, thousand-kernel weight, foliar spray, selenium, protein.