Effect of Chemical Fertilizer Reduction Combined with Biological Fertilizer and Foliar Fertilizer on the Quality of Facility Nectarines and Soil Fertility

TUOLIHANAYI Nuerlan; ZHAO Yunwen; SUN Junli; ZHAO Baolong; WANG Chao

doi:10.15933/j.cnki.1004-3268.2025.05.012

Abstract：To clarify the effects of chemical fertilizer reduction combined with biofertilizers and foliar fertilizers applications on nectarine fruit quality in greenhouse cultivation,this study employed 3-year-old Zhongnong Jinhui nectarines under six treatments:CK(300 kg/ha conventional compound fertilizer with irrigation),T1(80％conventional fertilizer at 240 kg/ha),T2(T1+150 kg/ha fish protein biofertilizer),T3(T1+7.5 kg/ha Trichoderma harzianum and 7.5 kg/ha Bacillus subtilis),T4(T1+1 000 times diluted algal-derived biostimulant for foliar spray),T5(T1+600 times diluted KH2PO4 for foliar spray).The experiment investigated impacts on photosynthetic characteristics,fruit quality parameters,and soil fertility.Results demonstrated that reduced chemical fertilization combined with biofertilizers and fertilizers enhanced chlorophyll biosynthesis.The optimal chlorophyll accumulation occurred with algal biostimulant application(T4).T3 treatment exhibited the most significant photosynthetic enhancement,showing 14.83％higher net photosynthetic rate than CK.Superior fruit quality and soil improvement were achieved in T3,demonstrating 27.59％increased single fruit weight,along with 14.11％and 56.85％elevations in soluble sugars and vitamin C respectively.Soil parameters showed 12.54％and 14.81％increases in organic matter and total nitrogen compared to CK.In conclusion,reducing chemical fertilizers in combination with biofertilizers or foliar fertilizers can enhance photosynthetic characteristics,fruit quality traits,and soil fertility of greenhouse-cultivated nectarines to varying degrees.Among the treatments,80％conventional fertilization combined with Trichoderma harzianum and Bacillus subtilis application optimally improves both nectarine fruit quality and soil fertility in protected cultivation systems.