冬季,隻要解決好升溫保濕與通風之間的矛盾,食用菌就能獲得較理想的產量。
合理升溫 以平菇為例,平菇低於5℃不再生長,即使低溫型菌株如2006、特抗1號等,盡管在4℃左右不至於發生生理性病害,但也需要10℃以上的溫度才能長得好。因此,冬季生產中的升溫與保濕,便成為至關重要的管理任務。一般溫度的提高通過日光增溫、棚內生火爐等方式即可解決。但生火爐增溫時,大多數菇農常怕 “跑了熱氣”而(er)密(mi)閉(bi)菇(gu)棚(peng),結(jie)果(guo)導(dao)致(zhi)通(tong)風(feng)嚴(yan)重(zhong)不(bu)良(liang),二(er)氧(yang)化(hua)碳(tan)積(ji)聚(ju),濕(shi)度(du)居(ju)高(gao)不(bu)下(xia),在(zai)產(chan)生(sheng)畸(ji)形(xing)菇(gu)的(de)同(tong)時(shi),也(ye)會(hui)引(yin)致(zhi)某(mou)些(xie)浸(jin)染(ran)性(xing)病(bing)害(hai)的(de)發(fa)生(sheng)。生(sheng)產(chan)中(zhong)常(chang)見(jian)的(de)茶(cha)花(hua)菇(gu)、拐棍菇、菜花菇等均因此而發生,一些浸染性病害如腐爛病等,也與通風不良、濕度過高有著密切的關係。解決辦法:自然條件下,晴好天氣時,上午10時後開始通風,至14時shi左zuo右you結jie束shu。從cong棚peng內nei上shang方fang拉la一yi層ceng遮zhe陽yang網wang或huo黑hei色se薄bo膜mo,揭jie開kai草cao苫shan後hou日ri曬shai增zeng溫wen,令ling熱re量liang進jin入ru而er將jiang直zhi射she光guang擋dang住zhu。通tong風feng過guo程cheng中zhong會hui有you不bu同tong程cheng度du的de降jiang溫wen,風feng量liang隻zhi要yao不bu是shi過guo大da,有you時shi反fan而er對dui出chu菇gu和he子zi實shi體ti發fa育yu有you一yi定ding的de促cu進jin作zuo用yong。有you條tiao件jian的de可ke安an裝zhuang水shui溫wen空kong調tiao,既ji可ke有you效xiao調tiao溫wen控kong溫wen,又you因yin該gai設she備bei可ke對dui菇gu棚peng吹chui出chu循xun環huan風feng而er使shi棚peng內nei空kong氣qi清qing新xin,避bi免mian了le因yin通tong風feng不bu良liang發fa生sheng的de各ge種zhong問wen題ti。
適度保濕 適當的基料持水和棚內的空氣濕度,統稱為水分,生產中一般分別調控在63%和85%~95%,rucicaikenengbaozhengjunsihezishitidezhengchangshengchang。danshi,shuifenzhishishiyongjunshengchangdetiaojianzhiyi,bingfeiweiyiyinsu,youqizishitishengchangqijian,shiliangdetongfengshibukeshaode。ertongfengyushidudebaochishiyiduishijicunzaidemaodun,tongfengzejiangshi。shijishang,yidingtiaojianxia,rudongjizhongwushifen,yinshidangtongrugaoyupengwendekongqi,keshipengwenlveweishenggao,bingyinciyinfapengneishuifendezhengfa,shicishideshiduyousuoshenggao。lilunshangyaoqiudebaochi90%左(zuo)右(you)的(de)空(kong)氣(qi)濕(shi)度(du)並(bing)未(wei)要(yao)求(qiu)濕(shi)度(du)達(da)到(dao)恒(heng)定(ding)狀(zhuang)況(kuang),如(ru)同(tong)變(bian)溫(wen)可(ke)刺(ci)激(ji)出(chu)菇(gu)一(yi)樣(yang),一(yi)定(ding)的(de)濕(shi)度(du)差(cha)有(you)時(shi)還(hai)會(hui)有(you)促(cu)進(jin)出(chu)菇(gu)的(de)作(zuo)用(yong),並(bing)且(qie),在(zai)濕(shi)度(du)相(xiang)對(dui)偏(pian)低(di)的(de)情(qing)況(kuang)下(xia),還(hai)可(ke)抑(yi)製(zhi)某(mou)些(xie)病(bing)害(hai)的(de)存(cun)活(huo)和(he)生(sheng)長(chang),但(dan)應(ying)根(gen)據(ju)子(zi)實(shi)體(ti)的(de)不(bu)同(tong)階(jie)段(duan),將(jiang)濕(shi)度(du)差(cha)控(kong)製(zhi)在(zai)10%~20%,才能取得比較理想的生產效果。
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