To research systematically abundance and deficiency indices and formula fertilization of soil P by soiltesting in rice district,field experiments on fertilizer efficiency of rice were carried out in Rice Soil of South Henan.ASI(Agro Services International)method was used to test soil samples and calibrate ASI soil test according to thetypical response categories(55%,68%,78%,95% of relative yield to soil nutrient values,relative yield was the rateof rice yield in the treatment NK and NPK)and establish the ab...