The invention belongs to the technical field of microbial
fertilizer manufacturing, and particularly relates to a rice nano bacterial
fertilizer for reducing the incidence rate of rice blast. According to the nano bacterial
fertilizer,
corynespora cassiicola, coniothyrium minitans YAFEF037 and
mucor are introduced, antibacterial substances can be generated, growth and
reproduction of
pyricularia oryzae can be inhibited, competitive advantages can be formed on
rhizosphere and leaf surfaces of rice, ecological niches of
pathogenic bacteria are occupied, and then the incidence rate of the
pyricularia oryzae is effectively reduced; due to the high specific surface area and adsorbability of the
nano silicon dioxide, a good adhesion and growth environment is provided for microorganisms, and the metabolic capability and
stress resistance of the strain are further enhanced; the
organic matter fermentation liquor contains a large amount of nutritional ingredients, growth and development of
rice root systems can be promoted, and the
nutrient absorption capacity of rice is improved; the growth vigor and the
stress resistance of the rice are improved through the nano bacterial fertilizer, the resistance of the rice to the rice blast is further enhanced, and a synergistic effect mechanism of promoting the fertilizer with
bacteria and preventing diseases with the fertilizer is formed.