| Pot experiment was used to evaluate the effects of fertigation with nitrogen fertilizer on maize. Compared to the traditional fertilization method, fertigation with drip irrigation method increased the N uptake and dry matter accumulation of summer maize; root activity, chlorophyll content and NRA also increased. When fertilizer was applied by fertigation, the recovery of nitrogen fertilizer was high as 73.55%, with the 110.44% of increasing rate higher than that of the traditional fertilization method; and the corresponding increasing rate in dry weight of shoot and grain yield and water use efficiency for fertigation method were 49.55%, 67.57%, 109.20%, respectively. Obviously, fertilization in drop irrigation improved water use efficiency and nitrogen use efficiency; it related to efficiently control the supply of water and nutrients in soil by drip irrigation. |