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长江流域综合治理开发取得了很大的成绩,大大促进了本流域工农业生产和国民经济发展,但同流域综合利用规划的总目标相比,还相差甚远,存在的主要问题有:1.防洪能力普遍较低,如荆江河段,单靠大堤只能防御10年一遇洪水,运用荆江分洪北闸分流,也只能防20年一遇洪水。2.中下游平原内部渍水不能外泄,排涝标准仍低。3.广大丘陵区灌溉设施不足,旱灾仍很严
The comprehensive management of the Yangtze River Basin has made great achievements and greatly promoted the industrial and agricultural production and national economic development in this drainage basin. However, compared with the overall goal of comprehensive utilization planning in the basin, there are still a long way to go. The main problems are as follows: 1. Flood control capacity is generally low, such as the Jingjiang reach, only the levee can only defensive floods in 10 years, the use of Jingjiang flood diversion north gate diversion, it can only prevent floods in 20 years. 2. Mid-lower reaches of the plain waterlogging can not be leaked, drainage standards are still low. 3. Lack of irrigation facilities in the vast hilly areas, the drought is still very strict