Observation on Histological Structure of Strawberry Roots After Inoculating Fusarium oxysporum f. sp. fragariae Under 4-hydroxybenzoic Acid Stress Impacts of 4-Hydroxybenzoic Acid on Characteristics of Photosynthesis and Chlorophyll Fluorescence of Different Strawberry Cultivars Effects of peach branches returning on autotoxins and microbes in soil and tree growth of peaches Mitigative effect of micribial degradation on autotoxicity of Panax ginseng Extraction, bioassay, and chemical identification of Rehmannia glutinosa L. autotoxins Observation on Histological Structure of Strawberry Roots After Inoculating Fusarium oxysporum f. sp. fragariae Under 4-hydroxybenzoic Acid Stress Impacts of 4-Hydroxybenzoic Acid on Characteristics of Photosynthesis and Chlorophyll Fluorescence of Different Strawberry Cultivars