3种水培植物根系分泌的有机酸对氮循环菌的影响

Effect of organic acids exuded from hydroponic plants roots on nitrogen cycling bacteria

通过收集水培吊兰、空心菜和水芹的根系分泌物,采用液相色谱分析了其中有机酸的种类和含量;并研究了根系分泌物中的有机酸对氮循环菌的影响。结果表明3,种植物根系分泌物中的有机酸对氨化细菌和反硝化细菌的生长具有促进作用,对亚硝化细菌和硝化细菌的生长具有抑制作用。

The variety and content of organic acids exuded from hydroponic Chlorophytum comosum roots,hydroponic Ipomoea aquatica roots and hydroponic Oenanthe javanica roots by liquid chromatography were studied,and the effects of organic acid of root exudates on nitrogen cycling bacteria were analysed.The results showed that organic acid of the three hydroponic plants root exudates has promotion effect on ammonifying bacteria and denitrifying bacteria,but has inhibition effect on nitrobacteria and nitrosobacteria.