对从事氰氨化钙作业1年以上的46名男性工人和不接触毒物和粉尘的60名男性工人做了肺功能检查。两组成员吸烟情况基本相似,氰氨化钙车间空气中平均粉尘浓度为33.8mg/m~3。肺功能检查结果:7项肺功能指标中除 FVC 和 FEV_(1.0)外,其余各项指标均值,皆为观察组低于对照组,反映小气道 Forty-six male workers engaged in cyanamide work for more than one year and 60 male workers not exposed to poisons and dust had a lung function test. The smoking status of the two groups was basically similar, the average dust concentration in the air of sodium cyanamide workshop was 33.8mg / m ~ 3. Pulmonary function test results: In addition to the FVC and FEV_ (1.0), the other 7 indicators of lung function were lower in the observation group than in the control group, reflecting the small airway