麥地灣梨(li)是云南省大理白族自治(zhi)州云龍縣的(de)特(te)產(chan)(chan)。麥地灣梨(li)是“云南省特(te)晚熟優質梨(li)品(pin)種(zhong)”,已被認證為綠色食品(pin)。麥地灣梨(li)為國(guo)家農(nong)產(chan)(chan)品(pin)地理標志保護產(chan)(chan)品(pin)。
麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)是(shi)云(yun)(yun)(yun)(yun)(yun)龍(long)(long)縣(xian)(xian)特有(you)(you)的(de)(de)(de)(de)特晚(wan)(wan)熟耐儲(chu)藏(zang)地(di)(di)(di)(di)(di)方優(you)良品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong),在(zai)當(dang)地(di)(di)(di)(di)(di)栽培歷(li)史(shi)悠久(jiu)(jiu),據(ju)《云(yun)(yun)(yun)(yun)(yun)龍(long)(long)縣(xian)(xian)志(zhi)(zhi)(zhi)(zhi)》記(ji)(ji)載(zai)(zai):“已有(you)(you)近百年的(de)(de)(de)(de)栽培歷(li)史(shi)”。因成(cheng)熟于(yu)冬(dong)季,群眾又稱之為(wei)(wei)“冬(dong)雪(xue)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)”。 一(yi)、麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)稱謂的(de)(de)(de)(de)由(you)(you)來 麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)名稱的(de)(de)(de)(de)由(you)(you)來還(huan)與知(zhi)青(qing)上山下鄉(xiang)有(you)(you)關,當(dang)時下關知(zhi)青(qing)多(duo)(duo)集中(zhong)在(zai)云(yun)(yun)(yun)(yun)(yun)龍(long)(long)縣(xian)(xian)舊(jiu)州(zhou)(zhou)區(現功果(guo)(guo)(guo)(guo)(guo)橋鎮)的(de)(de)(de)(de)瀾滄江(jiang)河谷地(di)(di)(di)(di)(di)帶(dai)(dai)(dai)(dai),由(you)(you)于(yu)當(dang)時生產(chan)(chan)儲(chu)藏(zang)技(ji)術水平有(you)(you)限(xian),所以(yi)(yi)(yi)(yi)到(dao)每年的(de)(de)(de)(de)2-3月份已無梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)果(guo)(guo)(guo)(guo)(guo)供(gong)應,這時有(you)(you)一(yi)人將梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)從(cong)麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)村帶(dai)(dai)(dai)(dai)到(dao)知(zhi)青(qing)點給(gei)知(zhi)青(qing)們分享,知(zhi)青(qing)們品(pin)(pin)(pin)(pin)(pin)(pin)嘗到(dao)汁多(duo)(duo)味甜的(de)(de)(de)(de)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)后,紛紛問:“這是(shi)什么梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)?”這人也(ye)不知(zhi)是(shi)什么梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li),只說是(shi)從(cong)麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)帶(dai)(dai)(dai)(dai)來的(de)(de)(de)(de),以(yi)(yi)(yi)(yi)后知(zhi)青(qing)們想吃這種(zhong)(zhong)(zhong)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)的(de)(de)(de)(de)時候就(jiu)會(hui)問:“有(you)(you)沒有(you)(you)麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)?”。久(jiu)(jiu)而久(jiu)(jiu)之就(jiu)形成(cheng)了以(yi)(yi)(yi)(yi)地(di)(di)(di)(di)(di)名和(he)(he)(he)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)結合的(de)(de)(de)(de)品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong)稱謂“麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)”。 二、麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)的(de)(de)(de)(de)品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong)來源 據(ju)1998年《河北林(lin)果(guo)(guo)(guo)(guo)(guo)研(yan)究》第(di)13卷(juan)第(di)一(yi)期中(zhong)“云(yun)(yun)(yun)(yun)(yun)龍(long)(long)麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)調(diao)查(cha)”,云(yun)(yun)(yun)(yun)(yun)龍(long)(long)麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li), 又名麥(mai)(mai)(mai)(mai)(mai)莊(zhuang)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、雪(xue)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li), 系云(yun)(yun)(yun)(yun)(yun)南(nan)(nan)農家品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong)。因來源于(yu)四(si)川, 故群眾又稱四(si)川梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)( 原名已無法查(cha)考) , 系70 年前游洪順由(you)(you)四(si)川遷居云(yun)(yun)(yun)(yun)(yun)南(nan)(nan)省(sheng)云(yun)(yun)(yun)(yun)(yun)龍(long)(long)縣(xian)(xian)舊(jiu)州(zhou)(zhou)鄉(xiang)麥(mai)(mai)(mai)(mai)(mai)莊(zhuang)村時帶(dai)(dai)(dai)(dai)來的(de)(de)(de)(de)接穗, 接在(zai)屋(wu)角的(de)(de)(de)(de)一(yi)株(zhu)川梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)( Py rus p ashia Buch. -Ham. ) 樹(shu)(shu)上, 成(cheng)為(wei)(wei)繁殖傳播的(de)(de)(de)(de)母(mu)樹(shu)(shu)。母(mu)樹(shu)(shu)的(de)(de)(de)(de)原樹(shu)(shu)冠已死(si), 現存(cun)樹(shu)(shu)冠系從(cong)距地(di)(di)(di)(di)(di)面高(gao)(gao)(gao)約(yue)1m 的(de)(de)(de)(de)空心(xin)主干(gan)上長出(chu)的(de)(de)(de)(de)徒長枝重新形成(cheng)的(de)(de)(de)(de)。現母(mu)樹(shu)(shu)立地(di)(di)(di)(di)(di)海(hai)拔(ba)1720m。樹(shu)(shu)高(gao)(gao)(gao)10m, 冠幅8m, 主干(gan)高(gao)(gao)(gao)2m, 樹(shu)(shu)勢中(zhong)等(deng), 枝條(tiao)中(zhong)密, 年產(chan)(chan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)果(guo)(guo)(guo)(guo)(guo)400~500kg 。后經(jing)大(da)理州(zhou)(zhou)云(yun)(yun)(yun)(yun)(yun)龍(long)(long)縣(xian)(xian)農業科技(ji)工(gong)(gong)作者多(duo)(duo)年發(fa)掘、篩(shai)選,并從(cong)其(qi)變異品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong)中(zhong)成(cheng)功選育的(de)(de)(de)(de)晚(wan)(wan)熟優(you)良地(di)(di)(di)(di)(di)方特色(se)水果(guo)(guo)(guo)(guo)(guo)品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong)之一(yi)。 三(san)、麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)產(chan)(chan)業的(de)(de)(de)(de)發(fa)展歷(li)史(shi) 據(ju)1992年出(chu)版(ban)的(de)(de)(de)(de)中(zhong)華人民共(gong)和(he)(he)(he)國地(di)(di)(di)(di)(di)方志(zhi)(zhi)(zhi)(zhi)叢書《云(yun)(yun)(yun)(yun)(yun)龍(long)(long)縣(xian)(xian)志(zhi)(zhi)(zhi)(zhi)》中(zhong)第(di)176頁(ye)(ye)第(di)4行(xing)記(ji)(ji)載(zai)(zai),有(you)(you)16種(zhong)(zhong)(zhong)地(di)(di)(di)(di)(di)方梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)果(guo)(guo)(guo)(guo)(guo)品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong)資源,以(yi)(yi)(yi)(yi)水井麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、漕(cao)澗黑(hei)心(xin)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、大(da)功廠密香梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)為(wei)(wei)特品(pin)(pin)(pin)(pin)(pin)(pin),1989年有(you)(you)面積4543畝,總產(chan)(chan)量(liang)103.03萬(wan)公斤。第(di)463頁(ye)(ye)的(de)(de)(de)(de)第(di)17行(xing)記(ji)(ji)載(zai)(zai),優(you)質晚(wan)(wan)熟香梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)調(diao)查(cha):舊(jiu)州(zhou)(zhou)鄉(xiang)水井村麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(又名麥(mai)(mai)(mai)(mai)(mai)莊(zhuang)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li))和(he)(he)(he)大(da)功廠梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(又名依主梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)),以(yi)(yi)(yi)(yi)優(you)質、晚(wan)(wan)熟著稱,可保存(cun)到(dao)來年春季,為(wei)(wei)云(yun)(yun)(yun)(yun)(yun)南(nan)(nan)省(sheng)少數優(you)質、晚(wan)(wan)熟香梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong),經(jing)過(guo)調(diao)查(cha),鑒定和(he)(he)(he)推廣(guang),至1989年,已嫁(jia)接28000株(zhu),為(wei)(wei)開發(fa)地(di)(di)(di)(di)(di)方名特產(chan)(chan)品(pin)(pin)(pin)(pin)(pin)(pin)找到(dao)門路(lu)。 據(ju)1996年出(chu)版(ban)的(de)(de)(de)(de)《云(yun)(yun)(yun)(yun)(yun)龍(long)(long)縣(xian)(xian)林(lin)業志(zhi)(zhi)(zhi)(zhi)》記(ji)(ji)載(zai)(zai)了云(yun)(yun)(yun)(yun)(yun)南(nan)(nan)省(sheng)農大(da)科研(yan)處高(gao)(gao)(gao)級(ji)工(gong)(gong)程師張(zhang)興(xing)旺(中(zhong)),大(da)理州(zhou)(zhou)經(jing)果(guo)(guo)(guo)(guo)(guo)站高(gao)(gao)(gao)級(ji)工(gong)(gong)程師汪長進(jin)(左(zuo))考察云(yun)(yun)(yun)(yun)(yun)龍(long)(long)優(you)質梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)的(de)(de)(de)(de)照片(張(zhang)昭攝)。《云(yun)(yun)(yun)(yun)(yun)龍(long)(long)縣(xian)(xian)林(lin)業志(zhi)(zhi)(zhi)(zhi)》第(di)60頁(ye)(ye)第(di)17行(xing)記(ji)(ji)載(zai)(zai),水果(guo)(guo)(guo)(guo)(guo)類(lei):品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong)甚多(duo)(duo),主要(yao)有(you)(you)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、蘋(pin)果(guo)(guo)(guo)(guo)(guo)、柿(shi)、梅、柑桔(jie)等(deng),梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong)有(you)(you)16種(zhong)(zhong)(zhong),主要(yao)有(you)(you)麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、大(da)功廠梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、雪(xue)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、漕(cao)澗黑(hei)心(xin)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)和(he)(he)(he)大(da)黃皮梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、火把梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、人頭(tou)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、麥(mai)(mai)(mai)(mai)(mai)皮梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)、大(da)棠(tang)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)等(deng)。其(qi)中(zhong)以(yi)(yi)(yi)(yi)舊(jiu)州(zhou)(zhou)鄉(xiang)水井村所產(chan)(chan)麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)黃皮梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(特晚(wan)(wan)熟)品(pin)(pin)(pin)(pin)(pin)(pin)質最優(you),年產(chan)(chan)量(liang)約(yue)15萬(wan)公斤。在(zai)第(di)71頁(ye)(ye)第(di)2行(xing)記(ji)(ji)載(zai)(zai),梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li):喬木、高(gao)(gao)(gao)10-15米(mi),海(hai)撥(bo)2500米(mi)以(yi)(yi)(yi)(yi)下地(di)(di)(di)(di)(di)帶(dai)(dai)(dai)(dai)多(duo)(duo)有(you)(you)栽培,縣(xian)(xian)內16個梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)果(guo)(guo)(guo)(guo)(guo)品(pin)(pin)(pin)(pin)(pin)(pin)種(zhong)(zhong)(zhong)中(zhong)以(yi)(yi)(yi)(yi)麥(mai)(mai)(mai)(mai)(mai)地(di)(di)(di)(di)(di)灣(wan)(wan)梨(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)(li)品(pin)(pin)(pin)(pin)(pin)(pin)質佳(jia),其(qi)特點是(shi):
①果(guo)色褐黃著紅暈(yun),果(guo)開型(xing)扁圓端正、皮薄、果(guo)心小、肉酥脆(cui)(cui)、味密香濃甜(tian)、汁多(duo)。可(ke)溶性固形物含量為(wei)(wei)13%~17%,總(zong)糖7. 88%(已(yi)轉(zhuan)化為(wei)(wei)糖汁) , 總(zong)酸0. 33%, 維生(sheng)素C 2.2mg / 100g,大果(guo)型(xing)重(zhong)400-800 克(ke),中果(guo)型(xing)重(zhong)250-350 克(ke),一般單株(zhu)產(chan)400-600公斤,最高(gao)單株(zhu)可(ke)達(da)1500公斤,霜(shuang)降到(dao)小雪采摘(zhai),存放(fang)至來年陽春(chun)3月仍(reng)保持(chi)汁多(duo)濃甜(tian)酥脆(cui)(cui)不變;
②樹(shu)勢強健,3月上(shang)旬(xun)萌動,中(zhong)旬(xun)開花,花期約20天左右,遇重霜(shuang)花亦能正常受(shou)粉(fen),高山(shan)河(he)谷海撥(bo)1800-2650米潮濕(shi)溫涼地(di)(di)帶均宜栽培(pei),嫁接(jie)后(hou)3年(nian)(nian)(nian)結(jie)果(guo)(guo)(guo),10年(nian)(nian)(nian)后(hou)進入盛果(guo)(guo)(guo)期,70余年(nian)(nian)(nian)老(lao)樹(shu)仍抽(chou)新梢掛果(guo)(guo)(guo)滿枝(zhi),全樹(shu)結(jie)果(guo)(guo)(guo)均勻,木(mu)材(cai)紋理直(zhi),結(jie)構細而(er)均勻,有(you)優良器具(ju)和雕刻用(yong)材(cai)。 據(ju)1995年(nian)(nian)(nian)出版的(de)《云龍年(nian)(nian)(nian)鑒》第93第16行(xing)頁記(ji)載,〔麥(mai)地(di)(di)灣(wan)梨授(shou)(shou)(shou)粉(fen)試(shi)驗(yan)(yan)獲得成功〕:1992年(nian)(nian)(nian)以來,為(wei)探索云龍麥(mai)地(di)(di)彎(wan)梨授(shou)(shou)(shou)粉(fen)結(jie)實(shi)(shi)規律,縣(xian)(xian)林(lin)業站經濟林(lin)果(guo)(guo)(guo)專業技(ji)術人(ren)員與(yu)云南省農科(ke)院果(guo)(guo)(guo)樹(shu)研究所(suo)共(gong)同承擔試(shi)驗(yan)(yan)課(ke)題,并(bing)經試(shi)驗(yan)(yan)和跟蹤觀察得出結(jie)論:麥(mai)地(di)(di)彎(wan)梨自花授(shou)(shou)(shou)粉(fen)結(jie)實(shi)(shi)率(lv)(lv)為(wei)零,碭山(shan)酥、金花、雪花、大(da)功廠、富源(yuan)黃梨等梨品(pin)(pin)(pin)種(zhong)與(yu)之授(shou)(shou)(shou)粉(fen)結(jie)實(shi)(shi)率(lv)(lv)較高,主栽品(pin)(pin)(pin)種(zhong)與(yu)授(shou)(shou)(shou)粉(fen)品(pin)(pin)(pin)種(zhong)的(de)配置比例(li)為(wei)5:1,縣(xian)(xian)內先期開發(fa)的(de)純麥(mai)地(di)(di)彎(wan)梨園(yuan)應(ying)按比例(li)高頭(tou)換接(jie)上(shang)述授(shou)(shou)(shou)粉(fen)品(pin)(pin)(pin)種(zhong)中(zhong)的(de)任意(yi)一種(zhong),方能達到結(jie)實(shi)(shi)豐產目的(de)。第338頁第14行(xing)記(ji)載,〔麥(mai)地(di)(di)灣(wan)梨精品(pin)(pin)(pin)包裝(zhuang)初見(jian)成效〕:麥(mai)地(di)(di)灣(wan)梨是縣(xian)(xian)內特有(you)的(de)優質(zhi)晚熟梨,具(ju)有(you)很好的(de)市(shi)場,2000年(nian)(nian)(nian)初,縣(xian)(xian)科(ke)委接(jie)受(shou)“麥(mai)地(di)(di)灣(wan)梨”品(pin)(pin)(pin)牌開發(fa)項目后(hou),根據(ju)項目要求,組織(zhi)人(ren)力(li)、物力(li)、突出攻關(guan),年(nian)(nian)(nian)內完成包裝(zhuang)設計(ji)、印(yin)制、裝(zhuang)合等業務(wu)。首批上(shang)市(shi)1500件(jian),上(shang)市(shi)后(hou)受(shou)到廣大(da)消(xiao)費(fei)者普遍歡迎(ying),市(shi)場供不應(ying)求,經濟效益顯著。
云(yun)龍麥地(di)灣梨(li)是地(di)方優(you)(you)質品種(zhong),通過多年(nian)的提質、技(ji)術集成,近年(nian)來已(yi)被認證為綠色(se)食品,“云(yun)南(nan)省特晚熟(shu)優(you)(you)質梨(li)品種(zhong)”,經云(yun)龍天池(chi)林(lin)果場(chang)的示(shi)范(fan)(fan)帶動(dong)(dong),全縣發(fa)展(zhan)面積已(yi)達(da)35000多畝,僅天池(chi)林(lin)場(chang)示(shi)范(fan)(fan)1200畝,年(nian)產梨(li)2000噸以上(shang)(shang),2013年(nian)林(lin)場(chang)產值可(ke)達(da)400萬元以上(shang)(shang),同時帶動(dong)(dong)協會發(fa)展(zhan)4700畝。
2014年,云龍縣園藝工作站申報的“麥地(di)灣梨”通過農(nong)(nong)業部農(nong)(nong)產(chan)品(pin)質量安(an)全中心(xin)審(shen)查和組織專家(jia)評審(shen),實施國(guo)家(jia)農(nong)(nong)產(chan)品(pin)地(di)理(li)標志登記保護。
地域范圍
麥地(di)灣梨產地(di)位(wei)于云南省大(da)理白(bai)族自治州云龍縣(xian)境內(nei),涉及(ji)諾鄧鎮(zhen)、功果橋鎮(zhen)、漕(cao)澗鎮(zhen)、白(bai)石鎮(zhen)、寶豐鄉(xiang)(xiang)、苗尾鄉(xiang)(xiang)、檢槽鄉(xiang)(xiang)、長(chang)新鄉(xiang)(xiang)、關坪鄉(xiang)(xiang)、團結(jie)鄉(xiang)(xiang)、民建(jian)鄉(xiang)(xiang)共(gong)11個(ge)鄉(xiang)(xiang)鎮(zhen),地(di)理坐標為:東(dong)經98°52′~99°46′,北緯25°28′~26°23′之(zhi)間,南北長(chang)109千米,東(dong)西寬(kuan)91.8千米,種植面積6700公頃,年產量15萬噸。