美国的报刊杂志经常在议论着各种各样的危机,除了我们早已听到过的能源危机、经济危机等以外,和农业生产关系密切的就是水的危机。水的危机可以说比能源危机更深刻更广泛。事实已使人们认识到:水并不是取之不尽用之不竭的自然资源。在美国由于以往过度汲取水,现在已受到严厉的惩罚。有的地方为了争水造成了严重社会纠纷。虽然加州的北水南调工程,水泥渠道婉蜒千里,沿途浇灌千顷良田,给城市带来一派生机,但由于上游水源的湖泊,水位已降低达15米,不少湖底已露出,破坏了生态,所以引起当地居民的忧虑和反对,有人曾用炸药破坏渠道,也有人往阀门里灌水泥。卡罗莱多河原是加 American newspapers and magazines often talk about various crises. In addition to the energy crises and the economic crisis we have already heard, the crisis of water is closely related to agricultural production. The crisis of water can be said to be deeper and broader than the crisis of energy. The facts have led to the realization that water is not an inexhaustible source of natural resources. In the United States, it has now been severely punished for its excessive absorption of water. In some places there have been serious social disputes in order to fight water. Although the North-South water diversion project in California leads to a thousand-hectare farmland along the water with concrete channels, it brings vitality to the city. However, due to the upper reaches of the lake, the water level has been reduced by 15 meters and many of the lake bottoms have been exposed and damaged Ecology, it caused the worries and objections of local residents. Someone used explosives to destroy the channels and others poured water into the valves. Caroline River was originally added