积累是扩大再生产的主要泉源。积累的经济效果提高了,就能充分发挥建设资金的作用,保证国民经济高效益地持续、稳定发展。时滞现象是怎样形成的呢?我国统计上的固定资产积累是根据投资额(扣除不增加固定资产部分)计算的。建设资金在当年一经投放就统计为积累。但是,生产性固定资产在建成投产之后才能增加生产能力, Accumulation is the main source of expanded reproduction. If the accumulated economic effect is raised, the role of construction funds will be fully brought into play and the sustained and steady development of the national economy will be guaranteed. What is the time lag phenomenon? The statistical accumulation of fixed assets in China is calculated based on the amount of investment (excluding the part that does not increase the fixed assets). Construction funds in the year put into statistics for the accumulation. However, productive fixed assets can be increased in production capacity after they are put into production,