我国铁路旅客列车使用直通式厕所,运行途中粪便是直接排泄到铁路沿线路基上,不仅流失大量有机肥料、腐蚀站区交通运输设施,影响路基使用寿命,而且污染站、车环境,危害人体健康。除上述问题外,究竟 China’s railway passenger trains use straight-through toilets. During the operation, the excrement is drained directly to the embankment along the railway. Not only the loss of large amount of organic fertilizers but also the traffic facilities in the station area will affect the service life of subgrade and pollute the stations and vehicles and endanger human health. In addition to the above problems, after all