有机无机复混肥对土壤养分供应和花生产量及品质的影响OA

This study investigated the effects of organic-inorganic compound fertilizer on soil nutrient supply,peanut yield,and quality.The experiment used peanuts(Arachis hypogaea L.)as the test material and conducted a long-term field trial.Five treatments were set up:no fertilization(CK),full traditional compound fertilizer(100％CF),20％reduced traditional compound fertilizer(80％CF),full organic-inorganic compound fertilizer(100％OI),and 20％reduced organic-inorganic compound fertilizer(80％OI),with three replicates per treatment.The results showed that compared with the 100％CF treatment,peanut pod yields in the 100％OI and 80％OI treatments were significantly increased by 22.59％and 11.30％,respectively.The 80％CF treatment exhibited the lowest pod yield among all fertilizer treatments but was still significantly higher than that in the CK treatment.The net income of 100％OI and 80％OI treatment increased significantly by 21.46％and 11.19％respectively.Crude protein and oleic acid contents in peanut kernels of the 100％OI treatment were significantly increased by 1.75 and 1.86 percentage points,respectively,while linoleic acid content was significantly decreased by 0.61 percentage points.During the pegging stage,compared with the 100％CF treatment,the 100％OI treatment significantly increased the nitrate nitrogen content in the plow layer soil by 29.43％,ammonium nitrogen content in the plow layer soil showed significant increases of 202.34％and 84.17％under the 100％OI and 80％OI treatments,respectively,100％OI treatment significantly enhanced the available phosphorus and readily available potassium contents in the plow layer soil by 11.77％and 11.75％,respectively.During the pod-setting stage,compared with the 100％CF treatment,the 100％OI treatment significantly increased the nitrate nitrogen content in the plow layer soil by 43.17％,ammonium nitrogen content in the plow layer soil showed significant increase of 14.83％and 8.05％under the 100％OI and 80％OI treatments,respectively.Compared with the 100％CF treatment,100％OI and 80％OI treatments significantly enhanced the photochemical quenching coefficient of peanut leaves by 53.62％and 20.79％,while significantly reducing the non-photochemical quenching coefficient by 31.93％and 21.61％,respectively.Under the experimental conditions of this study,the full organic-inorganic compound fertilizer significantly enhanced the soil nutrient supply level,meeting the nutrient requirements of peanuts rluring various growth stages.It notably improved the photosynthetic fluorescence of peanut leaves during critical growth stages,promoting dry matter accumulation.These findings provide a theoretical basis for the application of organic-inorganic compound fertilizer in increasing peanut yield,enhancing the economic benefits of peanuts and improving peanut quality.