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青黴菌也稱藍綠黴,是食用菌製種和栽培過程中常見的汙染性雜菌,在一定條件下也能引起蘑菇、平菇、鳳尾菇、香菇、草菇和金針菇等食用菌子實體致病,是影響食用菌產量和品質的常見病菌。 症狀識別 培pei養yang料liao麵mian發fa生sheng青qing黴mei時shi,初chu期qi菌jun絲si呈cheng白bai色se,菌jun落luo近jin圓yuan形xing至zhi不bu定ding形xing,外wai觀guan略lve呈cheng粉fen末mo狀zhuang。隨sui著zhe孢bao子zi的de大da量liang產chan生sheng,菌jun落luo的de顏yan色se由you白bai色se逐zhu漸jian變bian成cheng綠lv色se或huo藍lan色se。生sheng長chang期qi菌jun落luo邊bian緣yuan常chang有you1~2haomichengbaise,kuozhanjiaoman。laojunluobiaomianchangjiaozhixingchengyicengmozhuangwu,fugaizaipeiyangliaomianshang,fenmidusuzhishiyongjunjunsitihuaisi。zhizhongguochengzhong,rufashengyanzhongkezhijunzhongfubaibaofei;發菌期發生較重,可致局部料麵不出菇。 病原及發病規律 危(wei)害(hai)食(shi)用(yong)菌(jun)的(de)青(qing)黴(mei)均(jun)屬(shu)半(ban)知(zhi)菌(jun)青(qing)黴(mei)菌(jun)真(zhen)菌(jun)。病(bing)菌(jun)大(da)批(pi)生(sheng)長(chang)時(shi)菌(jun)落(luo)呈(cheng)藍(lan)綠(lv)色(se)。病(bing)菌(jun)分(fen)布(bu)廣(guang)泛(fan),多(duo)腐(fu)生(sheng)或(huo)弱(ruo)寄(ji)生(sheng),存(cun)在(zai)於(yu)多(duo)種(zhong)有(you)機(ji)物(wu)上(shang),產(chan)生(sheng)大(da)量(liang)分(fen)生(sheng)孢(bao)子(zi),主(zhu)要(yao)通(tong)過(guo)氣(qi)流(liu)傳(chuan)入(ru)培(pei)養(yang)料(liao),進(jin)行(xing)初(chu)次(ci)浸(jin)染(ran)。帶(dai)菌(jun)的(de)原(yuan)輔(fu)料(liao)也(ye)是(shi)生(sheng)料(liao)栽(zai)培(pei)的(de)重(zhong)要(yao)初(chu)浸(jin)染(ran)來(lai)源(yuan)。浸(jin)染(ran)後(hou)產(chan)生(sheng)的(de)分(fen)生(sheng)孢(bao)子(zi)借(jie)氣(qi)流(liu)、昆蟲、人工噴水和管理操作進行再浸染。高溫利於發病,28℃~30℃條件下最易發生,分生孢子1~2tianjinengmengfaxingchengbaisejunsi,bingxunsuchanshengfenshengbaozi。duoshuqingmeijunxisuanxinghuanjing,peiyangliaojifutuchengsuanxingjiaoyifabing。shiyongjunshengchangshuairuoliyufabing,fanyougushengchangshouruohuoguchuangshangcanliugugenmeijishiqingchujunyouliyubingjunjinran。 防治方法 ①認真做好接種室、培養室及生產場所的消毒滅菌工作,保持環境清潔衛生,加強通風換氣,防止病害蔓延。②調節培養料適當的酸堿度。栽培蘑菇、平菇和香菇的培養料可選用1%~2%的石灰水調節至微堿性。采菇後噴灑石灰水,刺激食用菌菌絲生長,抑製青黴菌發生。③菌袋局部發病可注射15%甲醛溶液,段木發生青黴菌時可用石灰水洗刷,菇床上發病可用1%克黴靈、0.5%多豐農、0.1%施保功和0.1%撲海因溶液噴灑防治。 |
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