Objective: Study the feasibility of secondary treated waste water for agricultural irrigation in Urumqi. Method: Chinese cabbage and cotton were used as experimental materials and treated respectively with treatment 1 which is control, treatment 2 which is 50% reclaimed water, and treatment 3 which is 100% reclaimed water. POD, CAT, SOD, MDA, and dry weight of Chinese cabbage and production of cotton were detected. Result: Results showed that inhibitory effects of reclaimed water were proportional to the treatment duration and concentration. The dry weight of 50% reclaimed water treated treatment 1, as the order treatment 2 > treatment 1 > treatment 3. Because the nutrients and harmful substances respectively played promotion and inhibition on the growth of Chinese cabbage, treatment 2 growed better; The yields per acre of cotton under three kinds treatments were significant difference, as the order treatment 1 > treatment 2 > treatment 3, that means reclaimed water inhibits the growth of cotton. Conclusion: Reclaimed water showed different effects on different crops. On cabbage, it mainly showed promotive effect, while on cotton, it mainly showed inhibition effect.
