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sha mo nong ye dai lai de xi wang
Author(s): 
Pages: 31
Year: Issue:  1
Journal: Water Saving Irrigation

Keyword:  沙漠农业沙漠化电子计算机控制自动控制滴灌系统喷灌系统科学家用水量以色列现代化;
Abstract: <正> 沙漠,历来被人们看成是荒凉凄黯的不毛之地,可今天,它竟然生产出了金黄的粮食、新鲜的蔬菜和可口的水果。人类变沙漠为绿洲的梦想正在成为现实。沙漠种田,水是关键。科学家们已研究出电子计算机控制的喷灌和滴灌系统,目前喷灌应用最广。它能均匀喷洒水份,有效地控制用水量。埃及的萨里海亚农场,是改造沙漠的现代化示范垦区,采用的就是自动控制的大型时针式喷灌系统。滴灌给沙漠农业带来了不小的变化.现在以色列l/3的灌溉
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