Abstract: To clarify the effect of simplified fertilization on the rice growth, field experiments of different soil improvement and fertilization measures were conducted on acid sulphate soil (ASS). The results showed that applying soil conditioner (SC) and calcium magnesium phosphate (CMP) had the best effect on early rice growth, the average increase rate was 6.4%-6.7%. In contrast, microbial organic fertilizer (MOF) had the best effect on late rice growth, the average increase rate was 5.4%. The basic nutrient application of slow/controlled release fertilizer with single basal fertilization was sufficient for rice, which could promote the early tillering and maintain the continuous nutrient supply. Compared with the normal fertilization, the slow-release fertilizer (SRF) applied on early rice could increase rice yield by 4.1%, the controlled-release bulk blending fertilizer (CRF) applied on late rice could increase the yield by 4.2% . In sum, the optimal simplified fertilization technology for rice in acid sulphate soil is single basal application of slow- release fertilizer with high phosphorus and organic fertilizer.