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1 节水和水的有效利用由于农业是用水大户,有效的灌溉管理在将来无疑是节水的主要一环。目前非常普遍的是,由河流引用的水量一半以上并未到达田间,即使在到达田间以后,如何提高灌水效率还大有可为。这不仅意味着一项关键的资源正在被
1 Water-saving and efficient use of water As agriculture is a major water user, effective irrigation management is undoubtedly a major part of water conservation in the future. It is now quite common that more than half of the water quoted by rivers does not reach the fields, and it is quite possible to improve the efficiency of irrigation even after it reaches the fields. This means not only that a critical resource is being used