In the solar greenhouse,adopting eco-organic soilless cultivation model,the suitable dosage of specially

used fertilizer for eggplant was studied.The results showed that with the increase amount of this speeially used

fertilizer,the plant height,single fruit weight,yield per plant and average plot yield increased.But the production

increasing effect per unit fertilizer decreased.According to regression statistical analysis,the best fertilizer

applying quantity for eggplant was 0.098 kg·m^-2(N 19 %，P₂O₅ 6 %，K₂O 25 %),the theoretical yield was 9.10 kg·m^-2

(discount 91 t·hm^-2).The results of statistical analysis inosculated with that of the field experiments.