Since grapes are a fruit of the temperate zone, the high temperatures and heavy rainfall in Taiwan are not ideal for their cultivation.
葡萄本是溫帶作物，本省氣溫高，雨量多，且夏季病蟲害嚴重，原非栽種葡萄的良好環境。楊朝勝卻能依照葡萄在台灣生長和結實的特性，扭轉氣候上的劣勢，創獲進步的栽培技術。