Effect of'3414'Formula Fertilization on Yield,Quality and Fertilizer Utilization Efficiency of Amorphophallus konjac
This study investigates the effects of combined application of nitrogen,phosphorus,and potassium on the growth of Amorphophallus konjac in southern Shaanxi region,aiming to provide a scientific fertilization reference for A.konjac.Using the variety'Anmo 128'as the experimental material,the'3414'fertilization scheme was employed to examine variations in emergence rate,incidence rate,yield,and nutrient utilization efficiency of A.konjac under different levels of nitrogen,phosphorus,and potassium combined application.The experimental results indicated that with increasing application rates of nitrogen,phosphorus,and potassium,the marginal productivities of nitrogen fertilizer,phosphorus fertilizer,and potassium fertilizer gradually decreased.Additionally,both fertilizer agronomic efficiency and marginal productivity followed the order:phosphorus(P)＞potassium(K)＞nitrogen(N).Considering comprehensive indicators,the fertilization ratio of N1P1K2(127.5 kg/hm2 N+54 kg/hm2 P2O5+135 kg/hm2 K2O)demonstrates the most desirable outcomes and is most suitable for local promotion.
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