The invention discloses a microecological preparation for improvement of an allogynogenetic
crucian carp water body and a preparation method thereof. The preparation method comprises the following steps: (1) mixing mixed EM
bacteria body fluid,
sucrose,
lactose, peptone and water according to a
mass ratio of (5-10):(2-5):(1-5):(2-5):(80-90), transferring the mixture into a reaction
bottle, and performing constant temperature
fermentation at 37 DEG C for 3-5 days to obtain
fermentation liquor; (2)
drying and dehydrating bottom mud taken from an allogynogenetic
crucian carp pond at 100-105 DEG C, crushing and sieving the bottom mud with a 40-100 mesh
sieve to obtain a bottom mud
powder material; (3) weighing
copper oxalate and the bottom mud
powder obtained in the step (2) according to a
mass ratio of 1:(2-10), uniformly mixing the materials, adding water with the
mass being 3-5 times the mass of the bottom mud
powder, uniformly mixing the mixture, kneading the mixture into a spherical shape,
drying the spherical mixture, calcining the mixture at 400-600 DEG C for 2-4 hours, and cooling the product to
room temperature after the reaction; and (4) transferring the
composite material obtained in the step (3) into the
fermentation liquor obtained in the step (1), culturing for 5-10 days at
room temperature, taking out the product, and
air drying the product to obtain the microecological preparation. The microecological preparation provided by the invention can effectively improve the
water quality of the allogynogenetic
crucian carp water body, improve the
immunity of allogynogenetic crucian carps, increase the
survival rate of the allogynogenetic crucian carps, and promote the growth of the allogynogenetic crucian carps.