Abstract: Use Mica, sulphur, gypsum, brown coal etc. as assist material, to test the influence on N-absorbing and growth of rice. The effects of sulphur and gypsum are better, especially gypsum, the total N-absorbing is 3068.36mg/pot, higher 10.6% than that of topdressing; Compared with dressing, Nitrogen utilizations of sulphur and gypsum are more than 2.2%. and 9.8%, yields are more than 2.6%.and 13.5%, respectively, and improve the quality.