Ah Yen also reveals a secret weapon for keeping water quality high. She sticks her hand into the irrigation channel at the head of the rice paddy and pulls out a bag of oyster shells, telling us that that these shells not only clean the water, they can add micro-amounts of minerals for the stalks.
阿燕還透露一個讓水質乾淨的秘密武器，她一邊伸手進到水田前方灌溉處，拿出一袋蚵仔殼，蚵仔殼除了能淨化水質，還可以為稻米補充微量礦物質。