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在甘肃省河西绿洲灌区通过大田试验,研究矿物质有机肥与化肥配施对玉米产量构成的影响。结果表明,配施矿物质有机肥可以显著提高玉米的生物产量、子粒产量及肥料贡献率。与当前施肥水平比较,玉米在配施矿物质有机肥750 kg/hm2的条件下,化肥不减量和减量15%生物产量分别为38 647、36 869 kg/hm2,比单施化肥处理增产7.61%和2.66%;子粒产量分别为16 544、15 783 kg/hm2,增产7.56%、2.48%;肥料对生物产量贡献率分别为56.26%和49.07%,比单施化肥处理提高11.05和3.87个百分点,表明在配施矿物质有机肥750 kg/hm2的前提下,将氮、磷化肥施用量在当前水平上减量15%可以保证玉米子粒产量稳定在高产水平。
In the Hexi Oasis irrigation area of Gansu Province, field experiments were conducted to study the effects of the combination of mineral and organic fertilizers on the yield of corn. The results showed that with the application of mineral organic fertilizer can significantly increase the biological yield of corn, grain yield and fertilizer contribution rate. Compared with the current fertilization level, with the application of 750 kg / hm2 of mineral organic fertilizer, the yield and yield of chemical fertilizers were 38 647 and 36 869 kg / hm2, respectively, 7.61% and 2.66% respectively. The yield of grain yield was 16 544,15 783 kg / hm2, yielding 7.56% and 2.48% respectively. The contribution rate of fertilizer to biomass was 56.26% and 49.07% respectively, 11.05 and 3.87 Percentage points, indicating that with the application of mineral organic fertilizer 750 kg / hm2 under the premise of the nitrogen and phosphorus fertilizer application amount at the current level of 15% reduction can ensure that the corn seed yield stable at high yield levels.