To compare the effects of the conventional splitting fertilization and the coated fertilizers on the growth of the double cropping rice and the fertility of the redsoil,the experiment was carried out through two years of double cropping rice(four seasons)in the high fertility and low fertility paddy fields.The testing items were the growth and yield of double cropping rice,soil fertility,microbial biomass and enzymatic activity.The results indicated that compared with traditional fertilization,single basal application of the coated fertilizers increased the maximum tiller number of double cropping rice for 3~6 stems per hill both in high fertility and low fertility paddy field,improved the leaf chlorophyll content during mature stage,enhanced the biomass by 7.8%~22.4% during mature stage and raised annual average yield by 30%~147%.Moreover,these effects were significant in low fertility paddy field.Compared with traditional fertilization,the coated fertilizers application significantly improved the soil mineral nitrogen(Nmin)by 28.3%~37.7% during double cropping rice mature stage.The effects of the coated fertilizers on soil microbial community was not obvious,the comprehensive index of soil enzyme activity of the treatment with 80% controlledrelease fertilizers in low fertility paddy field was highest.In a word,the coated fertilizers application could absolutely substitute the conventional splitting fertilization on rice production of south China,furthermore,it could obtain same impact under reducing 20% fertilizer application,to achieve the aim of reducing fertilizer,increasing effect,saving cost and labour.