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在沈阳壤质草甸土上设置定位小区试验.连续7年结果表明,氯化铵或氯化铵与尿素配施比等氮量尿素对小麦、玉米均有增产作用,差异达显著以上水平.年亩施氯化铵32公斤以下,耕层土壤氯离子积累最大值为50ppm;亩施氯化铵32公斤和16公斤,土壤pH值年均降低0.25和0.19个单位;施用氯化铵与对照处理相比未发现对土壤结构有不良影响,还对<0.005mm的微团聚体含量有明显的增加;在年雨量750毫米条件下,40～80厘米深度有—108ppm氯离子峰值存在,但不致使土体氯离子达到作物受害浓度.
The plot plot test was set up on the loamy meadow soil in Shenyang.The result of 7 consecutive years showed that nitrogen and urea with ammonium chloride or ammonium chloride than urea could increase the yield of wheat and corn with the difference reaching significant level above. The annual acreage of ammonium chloride 32 kg, topsoil chloride ion accumulation maximum 50ppm; Ammonium chloride 32 kg and 16 kg, the average annual soil pH value decreased by 0.25 and 0.19 units; the application of ammonium chloride and control Compared with the soil structure, no significant effect on the soil structure was found, and the content of micro-aggregates <0.005mm obviously increased. At the annual rainfall of 750mm, there was -108ppm peak of chloride ion in the depth of 40 ~ 80cm, but not Soil chloride ion to crop damage caused concentration.