推荐回答(1个)
由于培养料直接与土壤接触,保湿性能较好,因此其出菇期喷水无论在数量上,还是次数上都较架式栽培少。要喷好水,必须做到“九看”和“九忌”。九看为:
一看菌株喷水:贴生型菌株,耐湿性强,出菇密,需水量大,在同等条件下,喷水量比气生型菌株多。
二看气候喷水:北风晴朗干燥天气,菇房喷水量要多;南风阴雨潮湿天气,要停水或少喷水。
三看气温喷水:气温适宜时应当多喷水;气温偏高或偏低时,要少喷水、不喷水或择时喷水;例如,在土层调水期间,遇到25℃左右的高温时,喷水应选择夜间或早晚凉爽时进行,气温在12℃以下时。宜在中午或午后气温较高时喷水。
四看菇房保湿性能喷水:菇房漏气严重,保湿性能不好,要多喷水,少通风。反之,喷水量要适当减少,通风量增多。
五看土层持水力喷水:覆土材料偏干,黏性小,沙性重,持水性差,喷水次数和喷水量都要增多;覆土材料偏湿,持水性好,或采用河泥砻糠覆土时,应采用轻喷、勤喷方法,且喷水量要小。
六看土层厚度喷水:覆土层较厚,用水可间歇重喷;覆土层较薄,应分次轻喷水。
七看菌丝强弱喷水:覆土层和培养料中的菌丝生长旺盛,要多喷水,其中结菇水、出菇水或转潮水要重喷;反之,菌丝生长细弱无力,要少喷、轻喷或喷维持水。
八看菇体多少和大小喷水:出菇高峰期,床面菇多而大,吸水量大,水分蒸发、消耗多,喷出菇水转潮水和维持水时要相应增加用量;如果床面菇少而小或进入产菇后期,喷水量则要相应减少,必要时见菇喷水。
九看菇房所处位置喷水:如果菇房地处坡地、土地较干燥,通风条件好,应多喷水;而相反地处低洼地,土地湿润,通风条件较差,应少喷水。
“九忌”是:
一忌喷关门水:喷水时和喷水后,不可马上关闭菇房门,避免菌床菌丝缺氧窒息衰退,防止菇体表面游离水滞留时间过长,产生斑点。
二忌喷水不匀:防止土层菌丝出现“包衣”,避免菌床出菇参差不齐,或出薄皮菇、小菇。
三忌高温时喷水:发菌期气温在25℃以上、产菇期气温在20℃以上,菌床不宜喷水。避免菇房高温、高湿,造成菌丝萎缩,死菇增多和诱发病害。但床面菇体长至1厘米以上时,不一概停水,若需喷水也应选择早晚或夜间进行。
四忌采菇前喷水:采菇的菌床至少提前2小时喷水通风后,方能进行采收。防止菇体采收时与手接触,以免变红或产生色斑。
五忌寒流来时喷重水:避免菌床降温过快,菇房温差过大,造成死菇或产生硬开伞。
六忌喷过浓的肥水或药水、石灰水:防止菌床产生肥害、药害,避免因反渗透作用而使菌丝细胞出现生理脱水萎缩,造成菇体大量死亡或发红变色。
七忌阴雨天气喷重水:避免菇房处于高湿状态,造成菌床病害发生,防止菇体发育不良。
八忌菌丝衰弱时喷重水:防止菌床产生退菌。
九忌菌床一次全面泼浇重水:避免土层起浆泛黏,造成土粒瘫散形成板结,防止发生“漏床”造成退菌,影响产量。
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