Fengshan also has a "rock field." Water bearing nutrient solution is pumped into a trough lying below the plants, many of which are wax apples.
「石頭那能種物，還不是因為『石田』下暗藏玄機」，看管石田的鳳試所助理員蕭瑞璋指出，石田下也有水槽，供給植物養料的培養液，就貯在蓄水槽裡，然後再用抽水馬達打進送水系統中，這種方式就是礫耕。