Agricultural soil conditioner and preparation method thereof

The invention discloses an agricultural soil conditioner and a preparation method thereof, and relates to the technical field of soil improvement, the agricultural soil conditioner comprises a soil improvement liquid A and a soil improvement liquid B. Each kilogram of the soil improvement liquid A comprises the following components: 20-30 g of nano silver, 20-30 g of magnesium sulfate and 10-20 g of sodium carbonate; wherein each kilogram of the soil improvement liquid B comprises the following components: 55-65 g of chlorine dioxide; the preparation method of the agricultural soil conditioner comprises the following steps: S1, pouring the soil improvement liquid A into a barrel with the volume of 1000 kg, adding 500 kg of water, and fully stirring; s2, pouring a soil improvement liquid B, adding 500kg of water, fully stirring, and fully dissolving for 10 hours to obtain an agricultural soil improvement agent; s3, the agricultural soil conditioner is irrigated along with water and used for killing germs and v