Effects of fulvic acid on the growth,soil physicochemical and biological characteristics of continuous cropping cucumber
SUN Jiqing
ZHU Hengda
GAO Chunmei
WANG Weihua
Abstract：In order to investigate the effects of different concentrations of fulvic acid on seedling biomass,leaf protective enzyme activity,some physiological indicators,soil physicochemical properties,and soil microbial quantity of cucumber under continuous cropping.The results showed that fulvic acid at a concentration of 400 mg·L-1 significantly promoted the growth of continuous cropping cucumber seedlings,increased the activity of superoxide dismutase,peroxidase,and catalase in leaves,increased soluble protein and chlorophyll content in leaves,and reduced malondialdehyde and proline content.In addition,treatment with appropriate concentrations of fulvic acid significantly increased the content of alka-li-hydrolyzable nitrogen,available phosphorus,available potassium and organic matter,improved soil enzyme activity,in-creased the number of bacteria and actinomyces,and decreased the number of fungi and Fusarium oxysporum in the soil,in turn relieve continuous cropping obstacles and promoted cucumber seedling growth.In general,400 mg·L-1 fulvic acid had the best effect in relieving continuous cropping obstacles of cucumber.
Keywords：CucumberContinuous cropping obstacleFulvic acidSoil property
Publication Date：2025-07-05
Online Publishing Date：2025-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 87-92 )