of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of tation of the scope of protection, complete with warning signs, isolating network protection facilities20
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of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
4、压盖材料的根本要求
仓房使用的压盖材料,应具有以下的特性和要求:
压盖材料的导热系数小。
压盖材料的容重愈小愈好。
压盖材料不易吸水和燃烧。
压盖材料不易破损和变形。
压盖材料不易霉烂、鼠咬、虫蛀。
压盖材料必须美观、可重复使用。
压盖材料必须无毒、没有对人体有害的气体。
压盖材料必须施工方便、价格低廉。
5、做法与步骤
。进行压盖的储粮应符合以下要求,粮食必须具备长期储藏的条件,水分必须在平安标准以内,根本无虫、含杂少,粮堆各部位储粮水分、温度根本一致。
。仓房应具备不漏雨、不返潮、能密闭、能通风。仓门和通风口的密封性能良好。
、测气导气管。
,这对可在粮面拌防虫磷或保粮磷。
,根据粮情检查规律,用查粮踏板铺设走道。
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities4
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of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
稻糠压盖,
在A2东仓粮面用厚度为25—30cm的稻糠包,立式站立,包与包之间采用密实平铺的方式,使稻糠压盖的厚度平均到达40cm左右。在A2西仓、B2中仓,用编织袋装至半满厚度约20cm左右,分两层压盖,互相错缝。稻糠压盖要做到平、紧、密、实,严防凹凸缝洞。这样既能起到隔热防潮作用,又能阻隔害虫从外界传播侵入,防止蛾类成虫为害。
PEF材料压盖
B2西仓粮面上先铺一层无虫麻袋法,然后在麻袋上铺一层厚度为2cmPEF隔温材料,PEF全称为聚乙烯高分子发泡保温材料,℃,45倍发泡系数规格为200cm*100cm*2cm,PEF隔热板间采用平铺方式,板与板这间用宽胶带全部密封。
成卷保温毛毯压盖
B2东仓粮面上先铺一层旧的塑料薄膜,规格为2m*20m,片与片之间采用密实平铺的方式,搭头处重叠约1cm。
,进行单面封密闭,薄膜与墙体之间用压槽嵌压的方式连接。通风洞口先放一层PEF材料,再用枯燥无虫稻糠将通风洞填满,并对仓门和窗户作了双层密封处理.
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, iso
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