The research was for the ammonia volatilization status of different types of nitrogen fertilizers with irrigation treatments for one month after the base fertilization.The result showed that,for the fertilizers of urea treatment,half amount of urea,slow-released fertilizer,compound fertilizer,the amount of ammonia volatilized account for 0.84%,1.08%,0.44% and 1.07% of the total fertilizer under low soil water content(20%),and 0.77%,0.73%,0.70% and 1.36% for high soil water content(above 25%).