湖北农业科学 ›› 2025, Vol. 64 ›› Issue (4): 64-69.doi: 10.14088/j.cnki.issn0439-8114.2025.04.012

• 资源·环境 • 上一篇    下一篇

氮、钾肥减量对沙地马铃薯农田土壤理化性质及产量的影响

王雯1, 吴腾帅1, 刘梦圆1, 白海庆1, 刘柏林2   

  1. 1.榆林学院生命科学学院,陕西 榆林 719000;
    2.西北农林科技大学农学院,陕西 杨凌 712100
  • 收稿日期:2024-05-17 出版日期:2025-04-25 发布日期:2025-05-12
  • 作者简介:王雯(1982-),女,甘肃酒泉人,教授,主要从事马铃薯栽培等研究,(电话)18392201901(电子信箱)wangwen200806@163.com。
  • 基金资助:
    陕西省自然科学基础研究计划项目(2024JC-YBMS-205); 陕西省重点研发计划项目(2022NY-174)

Effects of nitrogen and potassium fertilizer reduction on soil physicochemical properties and potato yield in sandy farmland

WANG Wen1, WU Teng-shuai1, LIU Meng-yuan1, BAI Hai-qing1, LIU Bo-lin2   

  1. 1. College of Life Sciences, Yulin University, Yulin 719000, Shaaxi, China;
    2. College of Agronomy, Northwest A&F University, Yangling 712100, Shaaxi, China
  • Received:2024-05-17 Published:2025-04-25 Online:2025-05-12

摘要: 为探究榆林沙区马铃薯(Solanum tuberosum L.)栽培中的化肥减量策略,以马铃薯V7品种为供试材料,以常规全量施肥为对照(CK,N100%、P100%、K100%),其氮肥(N)、磷肥 (P2O5) 、钾肥 (K2O) 施用量分别为300.0、390.0、120.0 kg/hm2,并设置4个氮、钾肥减量处理,分别为F1(N95%、P100%、K100%)、F2(N90%、P100%、K100%)、F3(N100%、P100%、K95%)、F4(N100%、P100%、K90%),分析不同氮、钾肥减量处理对0~20 cm土层(耕层)土壤理化性质及马铃薯产量和商品薯率的影响。结果表明,在马铃薯生育前期,F2的耕层土壤含水量显著高于F3、F4和CK,增幅为11.66%~26.82(P<0.05),土壤温度显著高于F4,增幅为7.87%~12.43%(P<0.05);在马铃薯生育中后期,F2的土壤温度和土壤紧实度低于F3、F4和CK。在马铃薯整个生育期,CK的耕层土壤pH最低;F2的土壤速效氮含量显著低于CK,减幅为18.24%~36.31%(P<0.05);F2的土壤速效钾含量显著高于F4,增幅为8.31%~11.74%(P<0.05)。F2的马铃薯产量显著高于F1、F3和F4,增幅为8.01%~15.53%(P<0.05),与CK无显著差异,商品薯率显著高于其他处理5.99%~17.58%(P<0.05)。综上所述,氮肥减量10%和全量钾肥的施肥措施为榆林沙区马铃薯绿色高产栽培中适宜的施肥策略。

关键词: 马铃薯(Solanum tuberosum L.), 化肥减量, 氮肥, 钾肥, 土壤理化性质, 产量

Abstract: The purpose of this study was to explore the suitable fertilizer reduction strategy for green and high-yield cultivation of potato(Solanum tuberosum L.) in Yulin sandy area. The potato V7 variety was used as test material. Conventional full fertilization was used as control (CK, N100%, P100%, K100%), and its total nitrogen fertilizer (N), phosphate fertilizer (P2O5) and potassium fertilizer (K2O) were applied 300.0 kg/hm2, 390.0 kg/hm2 and 120.0 kg/hm2 respectively. Four fertilizer reduction treatments were established, including F1 (N95%, P100%, K100%), F2 (N90%, P100%, K100%), F3 (N100%, P100%, K95%) and F4 (N100%, P100%, K90%). The effects of different fertilizer reduction treatments on soil physicochemical properties in 0~20 cm soil layer, potato yield and commodity potato rate were analyzed. The results showed that in the early stage of potato growth, the topsoil water content of F2 treatment was significantly higher than that of F3, F4 and CK treatments by 11.66%~26.82 (P<0.05), and the soil temperature was significantly higher than that of F4 treatment by 7.87%~12.43% (P<0.05). In the middle and late stages of potato growth, the soil temperature and soil compactness of F2 treatment were lower than those of F3, F4 and CK treatments. In the whole potato growth stage, the topsoil pH value of CK treatment was the lowest, the soil available nitrogen content of F2 treatment was significantly lower than that of CK treatment by 18.24%~36.31% (P<0.05). The soil available potassium content of F2 treatment was significantly higher than that of F4 treatment by 8.31%~11.74% (P<0.05). The potato yield of F2 treatment was significantly higher than that of F1, F3 and F4 treatments by 8.01%~15.53% (P<0.05), but there was no significant difference between F2 and CK, and the commodity rate was significantly higher than that of other treatments by 5.99%~17.58% (P<0.05). In conclusion, the fertilization measures of 10% reduction of nitrogen fertilizer and full potassium fertilizer were the suitable fertilization strategies for green and high-yield cultivation of potato in Yulin sandy area.

Key words: potato(Solanum tuberosum L.), fertilizer reduction, nitrogen fertilizer, potassium fertilizer, soil physicochemical properties, yield

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