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淮河流域现有1亿多亩中、低产农田,改造好这部分农田,对于本流域2000年农业再上新台阶有决定性作用。本文就改造中、低产田的水利建设问题谈点看法。一、洪涝旱灾害是形成中、低产田的主要自然原因,也是治理的重要内容据对淮河流域近500年水旱灾害的统计分析,水旱灾害的年份占90％以上,不少年份水旱灾害并发(1991年就是水旱灾害严重的年份),旱涝交替出现,连涝连旱年份也常有发生。全流域无灾正常年份仅占整个统计年数的
Huaihe River Basin existing 100000000 acres of middle and low yield farmland, transform this part of farmland, for the basin agriculture in 2000 to a new level to a decisive role. This article talks about reconstructing the water conservancy construction in medium and low yield fields. I. Flood and Drought Disasters are the Main Natural Causes of Middle and Low Yield Fields and Important Contents of Governance According to the statistical analysis of floods and droughts in the Huaihe River Basin in recent 500 years, floods and droughts account for more than 90% of the total years. Floods and droughts in many years Disasters (1991 is a year of serious floods and droughts), droughts and floods appear alternately, and even the flood and drought year often occur. The whole basin without disaster normal years only accounts for the entire statistical year