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玉米套种马铃薯与单作相比,农田水分动态变化和作物耗水量均产生变异,受降水和土壤水分消耗的影响,最终导致不同处理的作物产量和水分利用效率出现明显差异。其中4∶4套种具有较好的产量和水分效应,水分利用率较单作玉米、单作马铃薯分别提高1.2%,10.4%。套种玉米产量12450kg/hm2,较单作玉米7950kg/hm2增产56.6%;套种马铃薯产量22500kg/hm2,较单作马铃薯19500kg/hm2增产15.4%。
Compared with monoculture, the corn intercropping potatoes showed variation in the dynamic changes of farmland moisture and crop water consumption, which led to significant differences in crop yield and water use efficiency under different treatments due to precipitation and soil water consumption. Among them, the 4: 4 interplanting had better yield and water effect, and the water use efficiency was 1.2% and 10.4% higher than that of single corn and single potato respectively. The yield of intercropping maize was 12450kg / hm2, which was 56.6% more than 7950kg / hm2 of monocrops. Intercropping potato yield was 22500kg / hm2, 15.4% more than that of 19500kg / hm2 monocropping.