香菇又名香蕈,其香味濃鬱。味道鮮美,是菜肴之佳品。我國香菇栽培不僅已有800多年的曆史,而且產量也居世界第一位。 解jie放fang前qian我wo國guo南nan方fang菇gu農nong一yi直zhi沿yan用yong傳chuan統tong的de砍kan花hua法fa栽zai培pei香xiang菇gu,生sheng產chan技ji術shu落luo後hou。解jie放fang後hou我wo國guo香xiang菇gu人ren工gong栽zai培pei技ji術shu得de到dao了le推tui廣guang和he應ying用yong,在zai有you林lin地di區qu普pu遍bian采cai用yong段duan木mu栽zai培pei,在zai無wu林lin地di區qu和he少shao林lin地di區qu,多duo用yong代dai料liao栽zai培pei香xiang菇gu,都dou取qu得de了le較jiao好hao的de經jing濟ji效xiao益yi和he社she會hui效xiao益yi。在zai香xiang菇gu整zheng個ge生sheng產chan過guo程cheng中zhong,主zhu要yao包bao括kuo兩liang個ge階jie段duan,第di一yi階jie段duan是shi培pei養yang菌jun種zhong,第di二er階jie段duan是shi用yong培pei養yang好hao的de菌jun種zhong進jin行xing栽zai培pei。菌jun種zhong製zhi作zuo可ke分fen為wei三san個ge步bu驟zhou:第一是培養母種(亦稱一級種或試管種)用孢子分離。組織分離或基質內菌絲分離等方法都可獲得母種。第二是培養原種(亦稱二級種),利用母種的菌絲體接入木屑或穀粒等培養基中,擴大繁殖培養成原種。第三是培養栽培種(亦稱三級種或生產種),利用原種的菌絲體,再擴大繁殖1次,即製成栽培種,它可以直接投入生產。這樣經過母種→原種→zaipeizhongdebuduankuodafanzhihou,shiyongjunjunsitideshuliangdedaodaliangdezengjia。yucitongshi,junsiyeyuelaiyuecuzhuang,fenjieyoujizhidenengliyeyuelaiyueqiang,liyongzhezhongjunsititourushengchan,zenengshengchangchujianzhuangdezishitierqudegaochan。
一、菌種培養基的配製
目mu前qian,多duo數shu菇gu農nong是shi從cong菌jun種zhong生sheng產chan廠chang家jia購gou進jin母mu種zhong,然ran後hou自zi己ji生sheng產chan原yuan種zhong和he栽zai培pei種zhong。原yuan種zhong及ji栽zai培pei種zhong的de培pei養yang基ji配pei製zhi方fang法fa是shi一yi致zhi的de,但dan培pei養yang基ji的de種zhong類lei和he配pei方fang很hen多duo,下xia麵mian僅jin介jie紹shao常chang用yong的de幾ji種zhong:
1.穀粒(麥粒、玉米粒)培養基 配方為穀粒50公斤加石膏0.5公斤。先將穀粒用清水洗淨,浸泡12xiaoshizuoyou,shiqichongfenxishui。gulipaohaohoufangrenguoneizhu,yishuerbulanweidu,laochukongshuihou,bashigaofenyugulibanyun。zheyangpeiyangjishiyongyuzuoyuanzhongpeiyangji。
2.木屑培養基 配方為闊葉樹粗木屑78%、麥麩或米糠20%。白糖l%、石膏l%。製作方法是把選用的木屑篩去木塊和樹皮,先將木屑、麥麩、石膏攪拌均勻,再用溶化的糖水拌料。配製好的培養基用手緊握時,手指間有水溢出而不下滴為宜(含水量約為60%)。這種培養基對原種和栽培種生產都是適宜的。
上述培養基配好後,即可進行裝瓶 (500毫升裝的罐頭瓶或酒瓶),裝入量至瓶肩。如果是木屑培養基需要培養料在瓶中達到上緊下鬆程度,瓶中間用錐形木棒紮一個直徑約1.5厘米的洞,直通瓶底,以增加氧氣,利於菌絲蔓延。瓶口內外擦淨,罐頭瓶用聚乙烯膜常壓滅菌或聚丙烯膜封口,酒瓶可用棉塞封口。
用yong瓶ping子zi製zhi種zhong,成cheng品pin率lv高gao,但dan瓶ping易yi碎sui,成cheng本ben也ye高gao,大da規gui模mo生sheng產chan和he運yun輸shu有you一yi定ding的de困kun難nan。近jin年nian來lai,用yong塑su料liao袋dai製zhi作zuo栽zai培pei種zhong的de菇gu農nong越yue來lai越yue多duo,具ju有you輕qing便bian、價廉等優點。塑料袋有聚乙烯和聚丙烯兩種,聚乙烯袋隻能用於常壓滅菌,聚丙烯袋常壓、高壓滅菌均可。塑料袋規格以17×30×0.005厘米較為合適。
二、菌種培養基的滅菌
peiyangjidemiejunshijunzhongshengchanchengbaideguanjian。weijingmiejundepeiyangjizhongcunzaizhedaliangdeweishengwu,changchangdaozhijunzhongwuran,geishengchanzaochengsunshi。muqiangunongpubiancaiyongdemiejunfangfashichangyazhengqimiejun。
常壓蒸氣滅菌的常壓滅菌灶用磚砌成,選直徑110厘米的鐵鍋,用磚砌高100厘米。直徑120厘li米mi的de鍋guo筒tong,內nei外wai用yong水shui泥ni抹mo光guang滑hua。培pei養yang基ji裝zhuang入ru滅mie菌jun鍋guo後hou,用yong較jiao厚hou的de塑su料liao膜mo和he麻ma袋dai片pian把ba鍋guo筒tong口kou包bao蓋gai住zhu,用yong繩sheng子zi捆kun綁bang結jie實shi。然ran後hou用yong旺wang火huo猛meng燒shao,在zai最zui短duan的de時shi間jian內nei將jiang鍋guo燒shao開kai。待dai塑su料liao膜mo鼓gu氣qi後hou成cheng饅man頭tou狀zhuang時shi,說shuo明ming鍋guo已yi燒shao開kai。滅mie菌jun從cong這zhe時shi開kai始shi計ji時shi,要yao持chi續xu8~10小時,確保滅菌徹底。 一些菇農往往在滅菌上麻痹大意,因雜菌汙染嚴重而導致製種失敗。常壓滅菌操作時要做到“三防止”,一要防止中途降溫,滅菌過程中,中途不得停火,如鍋內達不到100℃,zaiguidingshijianneizedabudaomiejundemude。eryaofangzhishaoganguo,zaimiejunzhiqianguoneiyaojiazushui,zaimiejunguochengzhong,ruguoguoneishuiliangbuzu,yaojishicongzhushuikouzhushui。sanyaofangzhicunzaimiejunsijiao,ruguodizhehuobuweibujun,guotongshangkoujincongyiduanlouqidengdengdoukenengchuxianmieyinsijiao。
三、接種與培養
miejunhoudepeiyangjikejinxingjiezhong,jiezhongjiushijiangjunzhongyizhidaopeiyangjishang。congshijiezhongdecaozuorenyuan,bixushuliyangedewujunguannian,shicaozuozhehejiezhonggongjuchuyuyangedewujunzhuangtai。yinci,bixuduijiezhonggongjujinxingyangedemiejun,duicaozuohuanjingjinxingchedixiaodu,caozuozhedeshouheyizheyeyaoxiaodu,yangezunshouwujuncaozuoguicheng。jiezhongshiyaozaijiezhongxiangneihuojiezhongshilijinxing。
接種時,先將接種箱或接種室內雜物清除幹淨, 用2%來蘇兒噴霧消毒。將待接種的培養基。菌種和所用工具放人接種箱或接種室工作台上,用福爾馬林和高錳酸鉀熏蒸接種箱、接種室至少半小時,用量是每立方米空間用5克高錳酸鉀,加10毫升甲醛。 接種前用75%的酒精棉擦抹雙手、母(mu)種(zhong)試(shi)管(guan)或(huo)原(yuan)種(zhong)瓶(ping)外(wai)表(biao),然(ran)後(hou)點(dian)燃(ran)酒(jiu)精(jing)燈(deng),進(jin)行(xing)操(cao)作(zuo)。接(jie)種(zhong)完(wan)畢(bi),熄(xi)滅(mie)酒(jiu)精(jing)燈(deng),將(jiang)已(yi)接(jie)好(hao)種(zhong)的(de)瓶(ping)或(huo)袋(dai)移(yi)至(zhi)培(pei)養(yang)室(shi)培(pei)養(yang)。一(yi)般(ban)一(yi)支(zhi)母(mu)種(zhong)可(ke)擴(kuo)繁(fan)原(yuan)種(zhong)4~5瓶,一瓶原種可擴繁栽培種40~50瓶或15~20袋。
培養室要保持清潔並調好溫、濕度和空氣、光照等環境條件。菌種培養的適宜溫度以20~25℃,空氣的相對濕度控製在60%左右為宜。發菌期間要求暗光發菌,培養室要始終保持通風良好的環境條件。按此管理方法,菌種在40天左右就可長滿瓶或袋。 長滿瓶(袋)的菌種如果不馬上使用,要放在0~10℃以下的環境中,可保藏1~3個月。
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