The results of N equilibrium analysis showed that the average amount of N surplus in Cele and Yuli was 87~248(kg/hm~2,) and the average residue N_(min) in 0~90 cm soil profile after harvest was mostly less than 100(kg/hm~2.)

• 养分平衡计算结果表明,氮素盈余量达到87~248 kg/hm2; 策勒和尉犁两个县总体上0~90 cm土壤N残留不高,只有10%25~32%25的棉田超过100 kg/hm2。