Acid soil improvement method

The invention discloses an acid soil improvement method, which includes the following steps: (A) calcium carbonate and calcium hydroxide are respectively ground by a fineness of 80 to 100 percent through a 20-40 mesh sieve, and thereby finely ground calcium carbonate powder and calcium hydroxide powder are respectively obtained; (B) the finely ground calcium carbonate powder and calcium hydroxide powder are uniformly mixed according to the weight ratio of 3:0.8-1.2, so that acid soil improver is prepared; (C) before soil preparation, the acid soil improver is evenly applied onto surface soil and then is uniformly turned into soil of a plough layer; (D) the dosage of the acid soil improver is 3500kg to 4000kg per hectare. The method is easy to practice, operation is simple and convenient, the materials of the acid soil improver can be easily obtained, the cost is low, moreover, the pH of acid soil can be increased to a range suitable for the growth of crops in a short time, after being used for about 30d, the