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在豫东潮土研究施肥对甘薯产量、生产情况的影响,分析不同施肥处理的产量及经济效益。结果表明,甘薯应不施或少施N肥,补施P、K肥;单施P、K肥分别比对照增产2.23%和1.16%,单施N肥比对照减产0.02%;N、P、K配合施用最佳配方是N_5P_9K_(10),其效益最高,为44 251.0元/hm~2,比对照增收355.3元/hm~2,鲜产量为30 713.9 kg/hm~2,比对照增产4.96%,分别比单施N、P、K增产4.98%、2.67%和3.75%。
The effects of fertilization on the yield and production of sweet potato in the tidal soil of eastern Henan were analyzed, and the yield and economic benefits of different fertilization treatments were analyzed. The results showed that sweet potato should be no or less application of N fertilizer, fertilizer P, K fertilizer; single application of P and K fertilizers increased 2.23% and 1.16% respectively compared with the control, applying N fertilizer alone than the control yield 0.02%; N, P, K with the best formula is N_5P_9K_ (10), the highest benefit is 44 251.0 yuan / hm ~ 2, which is 355.3 yuan / hm ~ 2 more than the control and fresh output is 30 713.9 kg / hm ~ 2, 4.96 more than the control % Respectively, yielding 4.98%, 2.67% and 3.75% more than applying N, P and K respectively.