基于Logistic模型分析化肥减量配施有机肥对马铃薯块茎养分累积、品质及产量的影响

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关键词：马铃薯；有机肥；氮磷钾养分；Logistic曲线

中图分类号：S532 文献标识码：A 文章编号：1002-204X（2025）10-0058-09

doi：10.3969/j.issn.1002-204x.2025.10.010

Abstract[Objective]To explore theefectsof reducing chemical fertilizerapplication incombination withorganic fertilizeronthe accumulation of nitrogen，phosphorus and potassum，qualityand yieldof potatoes，and to provide a theoreticalbasisforthe greenand eficientcultivationof potatoes inNingxia.[Method]Arandomized block trialdesign wasadoptedwithfivefertilization treatments：CK（chemical fertilizerapplicationalone），T1（chemical fertilizer application reduced by 20% combined with organic fertilizer），T2 （chemical fertilizer application reduced by 40% （204号 combined with organic fertilizer）， ′13 （chemical fertilizer application reduced by 6O% combined with organic fertilizer）， and T4（rganic fertilizerapplication alone）.[Result] Compared with CK treatment，T2 andT3 treatments significantly increased theaccumulationof nitrogen，phosphorus and potassium in tubers，and optimized therate and dynamic changes of nutrient accumulation.The contents of vitamin C，crude protein，soluble sugar，amylopectin，amyloseand starch in potato tubers allsignificantly increased underT3 treatment.Comparedwith CK treatment，theyieldsof T2 and T3 treatments were significantly increased by 9.50% and 23.82% respectively. There is a significant positive correlation between the yield，qualityand nutrientaccumulation rate ofpotatoes.[Conclusion]Reducing theapplication of chemical fertilizers by 40% to 60% in combination with applying organic fertilizers can promote the accumulation of nitrogen，phosphorus and potassium nutrients in potatoes，achieving the goal of increasing production and improving quality.

Key Words Potato; Organic fertilizer; Nitrogen， phosphorus and potassium nutrients; Logistic curve

马铃薯富含淀粉、蛋白质、维生素C、糖类和各种矿物盐，具有很高的营养价值，是我国重要的粮食作物之一。（剩余12519字）