近年来，我省从事内河航运的国有大、中型运输企业相继出现了连年亏损现象。企业资产负债率普遍上升，生产经营举步维艰。造成这种局面的原因很多，但笔者认为主要有以下几个方面： 自然因素。我省地处寒温带地区，黑龙江水系松、黑、乌、嫩四大通航河流每年均有五六个月的封冻 In recent years, the state-owned large and medium-sized transport enterprises engaged in inland river shipping in our province have successively suffered losses from successive years. Enterprise asset-liability ratio generally increased, production and operation difficult. There are many reasons for this situation, but I think there are mainly the following aspects: natural factors. The province is located in the temperate zone, the Heilongjiang River loose, black, Ukraine, the four navigable rivers are frozen every year for five or six months