In each of the spring, summer and fall growing seasons, around 200 varieties are selected. In the summer growing season, failure is often declared due to typhoons, but with the favorable weather of 2006, more than 500 varieties from the fall crop were chosen, requiring two full days to complete the selection.
通常春夏秋三作，每作的選拔品種約 200 種，夏作常因颱風侵襲宣告失敗，而 2006 年風調雨順，秋作選拔品種高達五百多種，必須分兩天才能選拔完成。