连续６年定位施用氯化铵证明，河西灌漠土上氯化铵与硝酸铵、尿素Ｎ肥有等量等效的效果，且在平产范围内增产效果略胜于尿素、硝酸铵。氯化铵Ｎ施用量在１５０ｋｇ／ｈｍ２范围内，长期施用对指示作物春小麦生长发育、品质无不良影响。随Ｎ肥施入的Ｃｌ－４７～５９１％淋洗到１５０ｃｍ以下的深层，土体剖面残留率为２５０％～２６１％，４０ｃｍ以上土层残留３７％～６６％，０～２０ｃｍ耕层残留很少，仅为１２％～２４％。 The application of ammonium chloride for 6 consecutive years proved that the equivalent effect of ammonium chloride, ammonium nitrate and urea nitrogen in the Hexi desertified soil was equivalent to that of urea and ammonium nitrate in the area of ​​flat production. Ammonium chloride N application rate in the range of 150kg / hm2, long-term application of the indicator crop spring wheat growth and quality without adverse effects. With the application of N fertilizer, Cl-47 ~ 591% was rinsed to the depth below 150cm, the residual rate of soil profile was 250% ~ 261%, while that of soil above 40cm was 37% ~ 6 6%, 0 ~ 20cm plow residue is very small, only 1  2% ~ 2  4%.