Lin then conducted an experiment on a mango orchard in Fangshan, Pingtung. He irrigated a test plot and left the control plot alone. When it rained, the control plot was hurriedly covered over with plastic sheets to block out the rain.
林宗賢於是以屏東縣枋山鄉的芒果園進行實驗──實驗園區進行灌水，對照的控制組園區則保留乾旱狀態；碰到下雨時，控制組就要搶蓋塑膠布擋雨。