Fruit anti-freezing agent and preparation method thereof

The invention discloses a fruit anti-freezing agent. Each 1000ml of fruit anti-freezing agent comprises 60g-80g of agricultural nitrate rare earth, 60g-80g of glycerol, 100g-400g of compound sodium nitrophenolate, 30g-50g of humic acid, 450g-500g of EM flora, 180g-220g of brown sugar and the balance of water. The invention further discloses a preparation method of the fruit anti-freezing agent. The anti-freezing agent compound component prepared by using the preparation method is effective in sugar orange fruit period and litchi flower bud differentiation period in 4 years from 2009 to 2014; the anti-freezing agent has obvious anti-freezing agent effect, and is capable of improving and maintaining fruit quality, freeze injury to a garden to which the anti-freezing agent is sprayed is relieved, the orange tree nutrition loss is reduced, the orange tree has excellent flower prompting and flower strengthening function when being observed in two years. The anti-freezing agent is nontoxic, personal safety protection is unnecessary when the anti-freezing agent is sprayed, and the operation is simple, convenient and easy to understand.