Abstract:

Use single factor randomized block design method to study the effect on natural resources use efficiency of maize under different fertilization at irrigation district in Hexi corridor of Gansu province. The results showed that: combined application of biological bacterial fertilizer and chemical fertilizer reduction can significantly improve the fertilizer utilization rate and make some effect on yield components, water use efficiency and light use efficiency of maize. In the combined application of biological fertilizer conditions, the chemical fertilizer compared with the optimal fertilization levels in current. Reduction of 15% and 30%, the maize yields were 14828 kg/hm2, 13837 kg/hm2, water use efficiency were 1.75kg/m3, 1.69 kg/m3, N use efficiency was 32.20%, 31.79%, P use efficiency were 22.31%, 22.07%, light use efficiency were 0.71%, 0.68%. Combined application of biological bacterial fertilizer and chemical fertilizer reduction of 15%, the yield of maize and light use efficiency was no significant difference with the optimal fertilization levels in current. This experiment results had already prove was viable in produce practice that fertilizer reduce lower 15% compares wither optimal fertilization levels in current under the condition of combined application of biological bacterial fertilizer.