東(dong)(dong)(dong)莞(guan)(guan)市各鎮區大(da)力推廣種植龍(long)(long)(long)眼(yan)(yan),品(pin)種以(yi)(yi)石(shi)碣(jie)(jie)龍(long)(long)(long)眼(yan)(yan)為多(duo),石(shi)碣(jie)(jie)龍(long)(long)(long)眼(yan)(yan)以(yi)(yi)果型大(da),皮薄肉厚(hou),甜(tian)脆爽(shuang)口(kou),營養(yang)豐富而大(da)受(shou)歡迎(ying)。據(ju)東(dong)(dong)(dong)莞(guan)(guan)市第一(yi)批古(gu)樹(shu)(shu)名木公(gong)布{2003.7.4},東(dong)(dong)(dong)莞(guan)(guan)市分(fen)布在南城(cheng)、鳳崗、塘(tang)廈(sha)、清溪(xi)、大(da)朗、橋頭、虎門(men)、洪梅(mei)、中堂、石(shi)碣(jie)(jie)等鎮區的(de)二、三級古(gu)龍(long)(long)(long)眼(yan)(yan)樹(shu)(shu)共有(you)17株,現存(cun)年(nian)(nian)代最(zui)長的(de)是(shi)位于石(shi)碣(jie)(jie)涌口(kou)村的(de)2株龍(long)(long)(long)眼(yan)(yan),已有(you)300年(nian)(nian)樹(shu)(shu)齡,可(ke)見龍(long)(long)(long)眼(yan)(yan)在東(dong)(dong)(dong)莞(guan)(guan)栽種歷(li)史悠久,分(fen)布廣泛。民國(guo)期間,東(dong)(dong)(dong)莞(guan)(guan)是(shi)廣東(dong)(dong)(dong)龍(long)(long)(long)眼(yan)(yan)主要(yao)產區之一(yi)。東(dong)(dong)(dong)莞(guan)(guan)龍(long)(long)(long)眼(yan)(yan)品(pin)種有(you):石(shi)硤(xia)、廣眼(yan)(yan)、烏(wu)圓、福眼(yan)(yan)、東(dong)(dong)(dong)壁、花殼(ke)等。
龍眼可鮮食(shi),但常(chang)用曬或(huo)火焙的方法加工成龍眼干,取(qu)其肉(rou)可入藥(yao),名為桂圓肉(rou),具有益脾、安(an)神、補血養顏之功效。眼樹材(cai)(cai)質堅硬、質重、耐水(shui)濕(shi)而不腐(fu),是造船(chuan)、家具等的良材(cai)(cai)。