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采用不同浓度及比例的拮抗菌舒展曲霉与以鸡粪为主发酵而成的有机肥混合制成生物有机肥,防治盆栽大豆疫霉根腐病。结果表明:生物有机肥能满足大豆生长期间的养分需求,抑制大豆疫霉根腐病的发生,大豆疫霉根腐病发生率比对照下降51%~88%;促进大豆植株生长,生物量比对照增加31%~67%;大豆植株抗氧化酶活性过氧化氢酶(CAT)、过氧化物酶(POD)、超氧化物歧化酶(SOD)分别比对照增加48%~235%、97%~246%、55%~233%,丙二醛(MDA)含量比对照下降55.6%~77.8%;大豆根际土壤微生物区系中病原真菌种群数量比对照下降77%~94%,以有机肥中舒展曲霉活孢子1×10~7cfu·g~(-1)处理效果最佳。
Using different concentrations and proportions of antagonistic bacteria Streptomyces avermitilis and chicken manure-based fermentation of organic fertilizer made of bio-organic fertilizer, control of Phytophthora infestans root rot. The results showed that the bio-organic fertilizer could meet the nutrient requirement during soybean growth and inhibit the occurrence of Phytophthora sojae. The incidence of Phytophthora sojae decreased by 51% -88% compared with the control, and promoted the growth of soybean plant and the biomass ratio The control increased 31% -67%. The activities of antioxidant enzymes such as CAT, POD and SOD increased by 48% -235% and 97% ~ 246% and 55% ~ 233%, respectively. The content of malondialdehyde (MDA) decreased by 55.6% ~ 77.8% compared with the control. The population of pathogenic fungi in the rhizospheric soil microbial community decreased by 77% ~ 94% Streptomyces live Streptomyces spores 1 × 10 ~ 7cfu · g -1 treatment best.