Dr. Chang has pointed out that, of the more than 70 million hectares of the world's land presently occupied by short-growth rice varieties, Taiwan's own short-growth rice genes can be found in 50 million hectares.
張德慈表示，全球矮生種面積現佔七千萬餘公頃，其中五千萬公頃均含有我國矮生種的基因。