配施生物菌肥及化肥减量对玉米水肥及光能利用效率的影响

Effect on Water,Fertilizer and Light Use Efficiency of Maize under Biological Bacterial Fertilizer and Chemical Fertilizer Reduction

采用单因素随机区组设计,在甘肃河西绿洲灌区通过大田试验,研究了不同施肥处理下玉米对自然资源利用率的影响。结果表明,配施生物菌肥及化肥减量可以显著提高玉米的肥料利用率,对玉米的产量构成、水分利用率,光能利用率均有一定的影响。在配施生物菌肥的条件下,化肥较当地最佳施肥水平减量15%和30%时,玉米的产量分别为14828kg/hm2、13837kg/hm2,水分利用率分别为1.75kg/m3、1.69kg/m3,氮肥利用率分别为32.20%、31.79%,磷肥利用率分别为22.31%、22.07%,光能利用率分别为0.71%、0.68%。配施生物菌肥及化肥减量15%时玉米的产量和光能利用率与当地最佳施肥水平无显著差异。证明在配施优质生物菌肥的条件下,化肥施量较当前水平减量15%以内保证玉米高产是可行的。

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 1.75 kg/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.