Abstract:A 3-year located field experiment was conducted to study the influences of different straw incorporation methods combined with fertilizers on physiochemical properties of soil and yield of spring maize. The results show that no matter under what kind of straw returning methods, compared with non-straw returning, straw incorporation significantly increases the field capacity of every soil layer by 8.6%-18.0%, reduces soil compactness by 6.3%-27.5%, and deep turning and deep rotation of straws is better in the effects, which also significantly reduces soil bulk density of 20-40 cm. Straw incorporation increases the contents of soil organic matter by 21.2%, alkaline nitrogen by 8.6%, available phosphorus by 15.0% and available potassium by 17.2% in the plough layer after continuous straw returning for 3 years compared with the non-straw returning. In addition, appropriate nitrogen fertilizer combined with straw returning is more conducive to the improvement of soil nutrients. The application of 210 kg/hm2 nitrogen and 90-120 kg/hm2 potassium fertilizer with straw deep turning and rotation significantly improves soil nutrients, promotes the ear length and diameter as well as 100-grain weight, so increases the yield of spring maize, thus, it is an ideal model in spring maize production and has good application and promotion potential in agricultural development in brown soil area in Liaoning.