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一--灌溉排水原理 陳清田 -91.11¬¬一篇-灌溉排水原理.pdf · 1-2 1.3 灌溉排水之目的與其重要性 1.3.1 灌溉之目的 灌溉之主要目的,在於供給作物生長必要的水份,謂之濕潤灌溉;其次,
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