“3414”配方施肥对魔芋产量、品质及肥料利用率的影响  

Effect of‘3414’Formula Fertilization on Yield,Quality and Fertilizer Utilization Efficiency of Amorphophallus konjac

作　　者：覃剑锋 孟延 段龙飞 蔡阳光 郭邦利 沈川 QIN Jianfeng;MENG Yan;DUAN Longfei;CAI Yangguang;GUO Bangli;SHEN Chuan(Ankang Academy of Agricultural Sciences,Ankang,Shaanxi 725021;Weinan Academy of Agricultural Sciences,Weinan,Shaanxi 714000;Ankang University,Ankang,Shaanxi 725000)

机构地区：[1]安康市农业科学研究院,陕西安康725021 [2]渭南市农业科学研究院,陕西渭南714000 [3]安康学院,陕西安康725000

出　　处：《中国农学通报》2024年第10期44-49,共6页Chinese Agricultural Science Bulletin

基　　金：国家重点研发计划“陕西秦巴山区特色经济作物、果蔬产业关键技术集成与示范”(2022YFD1602008);陕西省科技厅区域创新能力引导计划“富硒魔芋品种选育及控硒栽培技术研究”(2022QFY09-04);陕西省科技厅自然科学一般项目(2023-JC-QN-0203)。

摘　　要：探究氮磷钾配施对陕南地区魔芋生长的影响,为魔芋提供科学施肥参考依据。以‘安魔128’为试验材料,采用“3414”施肥方案研究不同水平的氮磷钾配施条件下魔芋出苗率、发病率、产量及养分利用率的变化。结果表明,随着氮、磷、钾施用量的增加,氮肥、磷肥、钾肥的偏生产力均呈现逐渐降低趋势。且肥料农学效率和偏生产力均表现为P>K>N。综合各项指标来看,N_(1)P_(1)K_(2)处理,即127.5 kg/hm^(2)N+54 kg/hm^(2)P_(2)O_(5)+135 kg/hm^(2)K_(2)O的施肥配比较为理想,最为适合在当地推广。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 N_(1)P_(1)K_(2)(127.5 kg/hm^(2) N+54 kg/hm^(2) P_(2)O_(5)+135 kg/hm^(2) K_(2)O)demonstrates the most desirable outcomes and is most suitable for local promotion.

关 键 词：魔芋 氮磷钾配施 产量 养分 肥料利用率 

分 类 号：S143.5[农业科学—肥料学]