微生物肥不同比例替代化肥对高油酸花生生长发育及产量品质的影响OA

[Objective]This study investigates the effects of substituting chemical fertilizer with different proportions of microbial fertilizer in the cultivation of high-oleic acid peanuts,thereby providing a scien-tific basis for reducing chemical fertilizer use while increasing its efficiency.[Method]Using the high-oleic acid peanut cultivar Jihua 915 as the test material and conventional fertilization as the control(CK),the effects of substituting chemical fertilizer with different proportions of microbial fertilizer(0%,20%,and 30%)on the growth,development,yield,and quality of high-oleic acid peanuts were studied.[Result]Com-pared with the control,substituting chemical fertilizer with 0%and 20%microbial fertilizer significantly increased peanut SPAD value,main stem diameter,and branch number,thereby promoting photosynthesis.Under these treatments,the hundred-pod weight and hundred-kernel weight increased significantly,while the rate of blighted and aborted pods decreased significantly,ultimately leading to significant yield increases of 6.03%and 5.42%,respectively.When the substitution rate reached 30%,peanut SPAD value,main stem diameter,branch number,hundred-pod weight,and hundred-kernel weight all decreased significantly,growth and development were inhibited,and yield was significantly reduced by 6.80%.In addition,com-pared with the control,the application of microbial fertilizer significantly increased the number of root nodules,fresh weight of root nodules,and nitrogenase activity,thereby promoting nitrogen fixation.It also significantly increased peanut protein content,oleic acid content,and the oleic acid-to-linoleic acid(O/L)ratio,thereby improving peanut quality.[Conclusion]The substitution of chemical fertilizer with 20%microbial fertilizer yielded the best comprehensive effect and can be recommended as an effec-tive measure for reducing chemical fertilizer use while increasing efficiency in this region.