摘要
吸水链霉菌(Streptomyces hygroscopicus)B04是一株生防菌,本文采用De Wit模型研究了B04固体发酵的最佳基质配比,利用盆栽试验及田间实验研究B04固体发酵菌剂对草莓生长及果实品质的影响。结果表明,菌株B04固体发酵基质的最佳配比是蚯蚓粪与麦麸质量比1∶1,在料水比1∶0.8、pH 7.2~7.5、28℃条件下,发酵周期7 d,菌体数量能达到5.3×10^(10)CFU·g^(-1)。盆栽试验证实,B04固体发酵菌剂能显著促进草莓生长,增加草莓植株生物量,并降低草莓发病率,生防效果达到64.35%。田间实验表明,B04固体发酵菌剂能明显改善草莓品质,提高草莓果实中维生素C含量,增加糖酸比。
S. hygroscopicus BOg has a good biological control function. This paper studied the best solid material proportion of solid-state fermentation of strain BOg with De Wit model, and the effects on growth and fruit quality of strawberry of solid-state fermentation preparation of BOg were also explored in the pot and field experiments. The results showed that the optimum quality ratio of solid-state fermentation of vermicompost and wheat bran was 1：1, and when feed and water ratio was 1：0.8, pH 7.2-7.5, under temperature of 28 ℃, the solid-state fermentation period was 7 days, the number of colony-forming units of strain BOg was up to 5.3×10^10CFU·g^-1. The pot experiment confirmed that the B04 solid fermenting agent could significantly promote the growth of strawberry, increase biomass of strawberry plant, and reduce the incidence of strawberry, besides the biocontrol efficiency against root rot of strawberry reached as high as 64.35%. The field experiment showed that BOg solid fermenting agent could significantly improve the fruit quality of strawberry, improve the content of vitamin C in strawberry fruit, and increase the ratio of sugar to acid.
出处
《农业资源与环境学报》
CAS
2016年第1期49-54,共6页
Journal of Agricultural Resources and Environment
基金
国家重点基础研究发展计划(2015CB150504)
江苏省科技支撑计划(BE2013427)
公益性行业(农业)项目(201203001)
