【摘要】 为了研究地膜覆盖条件下不同施肥模式的玉米对土壤水分利用率的影响,探索最佳施肥组合,采用"3414"方案,以玉米"陇单8号"为材料,在陇东学院试验农场进行野外田间试验,分别设置4个水平、14个处理。结果表明,处理6玉米的水分利用率最高,为1. 57kg/亩,与对照相比,提高了22. 66%;籽粒产量为887. 70kg/亩,与对照相比,提升了20. 15%,是最佳施肥组合,即N∶P2O5∶K2O为1∶0. 75∶0. 16;试验结果还进一步表明,玉米的产量与水分利用效率呈正相关关系并达到极显著水平,相关系数为0. 9982。更多还原

【Abstract】 In order to study the effects of different fertilization modes on the water use efficiency of maize under the mulching conditions and explore the best fertilization combination, we carried out field experiment by using the "3414"scheme with "Longdan 8" as material. The results showed that water utilization rate of the corn of treatment 6 was the highest,which was 1.57 kg/Mu·mm,22. 66% higher than that of the controlled; the grain yield was 887.70 kg/Mu,20.15% higher than that of the controlled. The best fertilization combination was that the proportion of N, P₂O₅,and K₂O was 1∶0.75∶0.16; the experiment also indicates that yield of maize was positively correlated with water use efficiency and reached a very significant level with a correlation coefficient of 0.9982.更多还原