为探究玉米花生间作系统中玉米根系分泌物对连作花生土壤的酚酸类物质化感作用的影响机制,利用CH2Cl2提取了玉米抽雄期根系分泌物,通过室内模拟培养法,研究了玉米根系分泌物对含有不同浓度肉桂酸、邻苯二甲酸及对羟基苯甲酸3种酚酸类物质土壤的微生态环境的影响。结果表明,酚酸类物质均显著降低了土壤微生物量碳和氮的含量,抑制了土壤微生物活性,土壤酶(脲酶、酸性磷酸酶和蔗糖酶)活性和养分含量(碱解氮、有效磷和有效钾)亦显著降低,且浓度越高化感抑制作用( RI
摘要(英文)：
In order to explore the mechanism of the effect of maize root exudates on the allelopathic of phenolic acids in continuous cropping peanut soil in the maize intercropping peanut system,root exudates of maize during tasseling stage were extracted by CH2Cl2,and the effects of maize root exudates on the micro-ecological environment of soil containing different concentrations of cinnamic acid, phthalic acid and p-hydroxybenzoic acid through indoor simulated culture method were investigated. The results showed that phenolic acids significantly reduced soil microbial biomass carbon and nitrogen cont...
