大家有没有发现北美完全靠天吃饭，没有任何灌溉系统，好在人少 (水城百事)

by 否则养不活, Tuesday, July 16, 2013, 15:12

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917 views

楼主坐飞机没见过圆形的耕地吗? 为啥是圆形的? 因为灌溉系统方便转圈灌溉. 地皮浪费一点木关系

by 圆形, Tuesday, July 16, 2013, 15:15 @ 否则养不活

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922 views

by max, Tuesday, July 16, 2013, 15:31 @ 圆形

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1152 views

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