The results indicated that,under drip fertigation with urea solution,0.3%HQ,0.5%HQ and 5.0%DCD could significantly increase N use efficiency(NUE) as compared to fertigation with urea alone,and the NUE were 74.8%,75.8%,75.3% respectively;

• 试验结果表明:在滴灌施尿素条件下；加入0.；3%25HQ、0