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在大田条件下,设置小麦、玉米不同灌溉量和灌溉时期的组合模式,对低压微喷条件下冬小麦、夏玉米产量、周年水分利用效率、经济效益进行分析。结果表明,与传统漫灌相比,低压微喷灌溉可以提高水分利用效率、灌溉水分利用效率和作物千粒质量,延缓灌浆后期叶片SPAD值的下降速度;测墒补灌结合低压微喷模式(S3)作物周年产量与对照间差异不显著(P>0.05),但水分利用效率较对照显著提高32.8%(P<0.05),灌溉水分生产效率较对照显著提高54.8%(P<0.05),经济效益比对照提高10.5%。在此试验条件下,测墒补灌结合低压微喷(S3)为最优灌溉模式。
Under field conditions, the combination modes of different irrigation amount of wheat and corn and irrigation period were set up, and the yield and annual water use efficiency and economic benefits of winter wheat and summer maize under low pressure micro-spray were analyzed. The results showed that compared with traditional flood irrigation, low pressure micro-spray irrigation can improve water use efficiency, irrigation water use efficiency and crop grain quality, delay the decline of SPAD value in late filling stage. (P <0.05). However, the water use efficiency increased significantly by 32.8% (P <0.05) compared with the control, and the irrigation water production efficiency increased significantly by 54.8% (P <0.05) compared with the control. The economic benefit 10.5% higher than the control. Under this experimental condition, soil moisture supplementation combined with low pressure micro-spray (S3) is the optimal irrigation mode.