Abstract: To provide theoretic support forWheat Production of Formula Fert ilization by soil testing in Shajiang Black So ilAreas. Field Experiments on Fertilizer E fficiency of winterwheat were carried in Shajiang Black So ilAreas. This study used AS I(Agro Services In ternationa l)method to test soil samples and calibrate ASI soil test according to the typical response categories( 50%, 75%, 95% of relat ivey ield to soil nutrient values) to estab lish the abundance and deficiency ind ices of soil ava ilab leK forwheat in Shajiang Black So ilA reas based on ASI soil testing and fert ilizer recomm endation. The very low, low, med ium, and high index for soil available Kwere< 67.4 mg/L, 67.4 - 97.??1 mg/L, 97.??1- 130.??0 mg/L, and> 130??.0mg/L, respectively. This experiment suggested that the recommended fert ilizer quantity were 150, 120, 90, and 45 kg/ha.

Key words: Wheat, ASI, Potassium, Abundance and deficiency indices

CLC Number: 

• S143.3??