東(dong)(dong)莞(guan)市各鎮區大(da)(da)力推廣(guang)(guang)種(zhong)植龍眼(yan)(yan)(yan),品(pin)種(zhong)以石(shi)碣(jie)(jie)龍眼(yan)(yan)(yan)為(wei)多,石(shi)碣(jie)(jie)龍眼(yan)(yan)(yan)以果型大(da)(da),皮薄肉(rou)厚,甜脆爽口(kou)(kou),營養豐富而(er)大(da)(da)受(shou)歡(huan)迎。據東(dong)(dong)莞(guan)市第一批古樹名木公布(bu)(bu){2003.7.4},東(dong)(dong)莞(guan)市分(fen)布(bu)(bu)在南城、鳳崗、塘廈(sha)、清(qing)溪、大(da)(da)朗、橋頭、虎門、洪梅(mei)、中堂、石(shi)碣(jie)(jie)等鎮區的(de)二、三(san)級古龍眼(yan)(yan)(yan)樹共(gong)有(you)(you)17株,現存年(nian)代最長的(de)是位(wei)于石(shi)碣(jie)(jie)涌(yong)口(kou)(kou)村的(de)2株龍眼(yan)(yan)(yan),已有(you)(you)300年(nian)樹齡,可見龍眼(yan)(yan)(yan)在東(dong)(dong)莞(guan)栽種(zhong)歷(li)史(shi)悠久,分(fen)布(bu)(bu)廣(guang)(guang)泛(fan)。民國期(qi)間,東(dong)(dong)莞(guan)是廣(guang)(guang)東(dong)(dong)龍眼(yan)(yan)(yan)主要產區之一。東(dong)(dong)莞(guan)龍眼(yan)(yan)(yan)品(pin)種(zhong)有(you)(you):石(shi)硤(xia)、廣(guang)(guang)眼(yan)(yan)(yan)、烏圓(yuan)、福眼(yan)(yan)(yan)、東(dong)(dong)壁、花(hua)殼等。
龍眼可鮮食,但常用曬或火焙(bei)的方法加工(gong)成(cheng)龍眼干,取(qu)其肉可入藥,名為桂圓肉,具(ju)(ju)有(you)益脾、安(an)神、補(bu)血養顏之功效。眼樹材質堅硬(ying)、質重、耐(nai)水濕而不腐(fu),是(shi)造船、家(jia)具(ju)(ju)等(deng)的良材。