（一）、資源(yuan)總量豐(feng)富。上(shang)世紀九(jiu)十年代(dai)，慈利縣(xian)(xian)(xian)大(da)力(li)發(fa)展支柱產(chan)業，各鄉(xiang)鎮大(da)面積(ji)栽植(zhi)杜(du)仲(zhong)(zhong)(zhong)、厚(hou)樸、黃柏等“三(san)木”藥材，全縣(xian)(xian)(xian)杜(du)仲(zhong)(zhong)(zhong)總面積(ji)一度高(gao)達(da)(da)40萬(wan)畝。后受市場(chang)(chang)行情影響，杜(du)仲(zhong)(zhong)(zhong)面積(ji)逐漸(jian)下降，根據(ju)十二五森(sen)林(lin)資源(yuan)清查結(jie)果顯示，目前(qian)全縣(xian)(xian)(xian)杜(du)仲(zhong)(zhong)(zhong)保存面積(ji)仍達(da)(da)15萬(wan)畝以上(shang)。其中集中連片(pian)杜(du)仲(zhong)(zhong)(zhong)林(lin)主要分布(bu)在江埡(wu)林(lin)場(chang)(chang)、青龍灣(wan)林(lin)場(chang)(chang)、高(gao)橋鎮、三(san)合鎮、廣(guang)福橋鎮、南山(shan)坪鄉(xiang)等地，僅江埡(wu)林(lin)場(chang)(chang)杜(du)仲(zhong)(zhong)(zhong)純林(lin)達(da)(da)1萬(wan)余(yu)畝。此(ci)外，現存的杜(du)仲(zhong)(zhong)(zhong)絕大(da)部分是成熟林(lin)，隨時可以進行開發(fa)利用(yong)，通(tong)過產(chan)業帶動，本縣(xian)(xian)(xian)可迅速利用(yong)豐(feng)富的杜(du)仲(zhong)(zhong)(zhong)種(zhong)植(zhi)經(jing)驗、有利的土壤(rang)氣(qi)候條件等優勢(shi)進一步(bu)擴大(da)杜(du)仲(zhong)(zhong)(zhong)面積(ji)，為(wei)杜(du)仲(zhong)(zhong)(zhong)產(chan)業發(fa)展提供有力(li)保障。

(二)、種(zhong)(zhong)(zhong)質資源(yuan)(yuan)極優(you)。慈(ci)(ci)(ci)利(li)(li)是(shi)杜(du)(du)仲(zhong)(zhong)主要(yao)的(de)(de)(de)(de)原產地(di)(di)之(zhi)一(yi)，有(you)數千年的(de)(de)(de)(de)野(ye)生和人工栽(zai)培杜(du)(du)仲(zhong)(zhong)的(de)(de)(de)(de)歷史。慈(ci)(ci)(ci)利(li)(li)屬中亞熱(re)帶季風濕(shi)潤(run)氣(qi)候(hou)區，年均氣(qi)溫16.8℃，雨(yu)量充沛，無霜期(qi)長(chang)，土(tu)層深厚(hou)，有(you)機質含(han)(han)量豐(feng)富，PH值6-7，這里獨特的(de)(de)(de)(de)氣(qi)候(hou)地(di)(di)理條(tiao)(tiao)件非常(chang)適應杜(du)(du)仲(zhong)(zhong)的(de)(de)(de)(de)生存生長(chang)。慈(ci)(ci)(ci)利(li)(li)杜(du)(du)仲(zhong)(zhong)不但品種(zhong)(zhong)(zhong)好，而(er)(er)且有(you)效(xiao)成(cheng)分(fen)含(han)(han)量高(gao)，其含(han)(han)膠(jiao)量高(gao)于全國平(ping)均水(shui)平(ping)，葉的(de)(de)(de)(de)含(han)(han)膠(jiao)量高(gao)出2%，籽(zi)(zi)的(de)(de)(de)(de)含(han)(han)膠(jiao)量高(gao)出10%。上世紀九(jiu)十(shi)年代，是(shi)全國各地(di)(di)杜(du)(du)仲(zhong)(zhong)種(zhong)(zhong)(zhong)植(zhi)面積迅速擴(kuo)大的(de)(de)(de)(de)爆炸期(qi)，這一(yi)時期(qi)是(shi)我縣江(jiang)埡林(lin)場杜(du)(du)仲(zhong)(zhong)籽(zi)(zi)產量的(de)(de)(de)(de)高(gao)峰期(qi)，年均產杜(du)(du)仲(zhong)(zhong)籽(zi)(zi)2萬(wan)公斤，銷往全國各地(di)(di)，當時杜(du)(du)仲(zhong)(zhong)籽(zi)(zi)的(de)(de)(de)(de)主要(yao)用途就是(shi)育(yu)苗，中國其他地(di)(di)區栽(zai)植(zhi)的(de)(de)(de)(de)杜(du)(du)仲(zhong)(zhong)，很多(duo)都是(shi)從江(jiang)埡林(lin)場引進的(de)(de)(de)(de)杜(du)(du)仲(zhong)(zhong)籽(zi)(zi)繁育(yu)而(er)(er)成(cheng)。此(ci)外，經湖南(nan)省藥食管理局(ju)監測，慈(ci)(ci)(ci)利(li)(li)杜(du)(du)仲(zhong)(zhong)含(han)(han)有(you)豐(feng)富的(de)(de)(de)(de)硒元素。優(you)質的(de)(de)(de)(de)種(zhong)(zhong)(zhong)質資源(yuan)(yuan)是(shi)本縣杜(du)(du)仲(zhong)(zhong)產業發展的(de)(de)(de)(de)優(you)勢條(tiao)(tiao)件。多(duo)年來，吉首大學杜(du)(du)仲(zhong)(zhong)湖南(nan)省工程(cheng)實(shi)驗室、北林(lin)大等(deng)科(ke)(ke)研(yan)院所(suo)，在(zai)培育(yu)杜(du)(du)仲(zhong)(zhong)良種(zhong)(zhong)(zhong)等(deng)科(ke)(ke)研(yan)工作過程(cheng)中，江(jiang)埡林(lin)場始(shi)終是(shi)重(zhong)要(yao)的(de)(de)(de)(de)引種(zhong)(zhong)(zhong)對象(xiang)。在(zai)民間(jian)，也時常(chang)有(you)慈(ci)(ci)(ci)利(li)(li)杜(du)(du)仲(zhong)(zhong)枝條(tiao)(tiao)及杜(du)(du)仲(zhong)(zhong)籽(zi)(zi)被(bei)拿到外地(di)(di)去做專(zhuan)門(men)的(de)(de)(de)(de)檢測。

(三)、地(di)域品(pin)牌響亮。“慈(ci)利(li)杜(du)仲(zhong)(zhong)(zhong)(zhong)”聞名(ming)全國(guo)(guo)。1983年12月(yue)原國(guo)(guo)家(jia)林(lin)業(ye)部、國(guo)(guo)家(jia)醫藥管(guan)理局將(jiang)慈(ci)利(li)縣定為(wei)“杜(du)仲(zhong)(zhong)(zhong)(zhong)商品(pin)生產(chan)(chan)基地(di)縣”，1987年11月(yue)，原林(lin)業(ye)部再次(ci)將(jiang)慈(ci)利(li)縣定為(wei)“名(ming)特(te)優杜(du)仲(zhong)(zhong)(zhong)(zhong)商品(pin)生產(chan)(chan)基地(di)縣”，1996年慈(ci)利(li)縣被國(guo)(guo)務(wu)院發(fa)展研究中心、中國(guo)(guo)農學(xue)會特(te)產(chan)(chan)經濟專業(ye)委員會、中國(guo)(guo)特(te)產(chan)(chan)報社等單(dan)位聯(lian)合授(shou)予“中國(guo)(guo)杜(du)仲(zhong)(zhong)(zhong)(zhong)之鄉”榮譽(yu)稱號(hao)。榮譽(yu)源自(zi)昨天(tian)曾經輝煌的歷史，也必將(jiang)鼓舞我們(men)早日迎來希望(wang)的明天(tian)。話(hua)杜(du)仲(zhong)(zhong)(zhong)(zhong)，繞(rao)不開“慈(ci)利(li)杜(du)仲(zhong)(zhong)(zhong)(zhong)”。近年來，隨著杜(du)仲(zhong)(zhong)(zhong)(zhong)產(chan)(chan)業(ye)新的機(ji)遇來臨，各(ge)地(di)客商不斷慕名(ming)而來，尋求產(chan)(chan)業(ye)發(fa)展的合作共贏(ying)。