Fang cites irrigation methods as a case in point. Land subsidence south of Taichung has resulted in fields that don't drain well because they sit too low. Farmers therefore use a furrow irrigation method to ensure that their crops develop good roots.
方煒以蔬菜的灌溉方式為例說，台灣中部以南因地層下陷，農田地勢較低，以致排水不佳，為了讓作物根系長得好，就採用在田裡作畦（兩個土堆中作溝）的「溝灌」模式。