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有机肥与化肥配合施用对覆膜玉米具有增产作用．试验表明，在同等施用化肥的前提下，增施有机肥公顷多产玉米1558．5kg，增产25．9％，纯增效益1056．00元／hm2．根据试验结果，建议生产上应用参考施肥配方，即磷酸二铵375kg／hm2、尿素424kg／hm2、硫酸钾45kg／hm2、有机肥22500kg／hm2。
Combined application of organic manure and chemical fertilizer has the effect of increasing yield on covered corn. Experiments show that under the premise of the same application of chemical fertilizers, 1558.5kg of organic fertilizer per hectare of increased maize yield increase of 25.9%, and the net increase benefit of 1056.00 yuan / hm2. According to the test results, it is recommended to apply the reference fertilization formula on the production, ie, 375kg / hm2 of phosphate, 424kg / hm2 of urea, 45kg / hm2 of potassium sulfate and 22500kg / hm2 of organic fertilizer.