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应用不同肥料配方对玉米进行一次性深施肥试验,结果表明:等养分条件下一次性深施肥有助于玉米对养分的吸收;施用包膜尿素、增施钾肥和一次性深施肥能提高氮肥利用率;一次性深施肥与常规施肥相比,等养分条件下可以明显提高单位面积的经济效益;包膜尿素虽然能提高氮肥利用率,但由于成本过高,增产效果不大,影响单位面积的经济效益。
Applying different fertilizer formulas to make one-time deep fertilization experiment on corn, the results showed that one-time deep fertilization under the condition of equal nutrients could help the nutrient absorption of maize; and the application of coated urea, potash fertilizer and one-time deep fertilization could increase the utilization of nitrogen fertilizer Rate; one-time deep fertilization compared with conventional fertilizers, under the condition of equal nutrients can significantly improve economic efficiency per unit area; Although coated urea can increase the utilization rate of nitrogen fertilizer, but because of high cost, yield-increasing effect, affecting the unit area Economic benefits.