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在农业学大寨的高潮中,我团开展了繁殖赤眼蜂防治玉米螟的群众运动,但一无冰箱,二无冷库,蜂卡冷藏成了难题,大家发扬自力更生,土法上马的精神,用土冰筒代替冰箱,获得了成功。 具体做法:在背阴和地下水位较低的地方挖一土窖,长、宽、深均为2米,窖中央安放一个直径40—60厘米、高1.5—2米的铁筒,筒身用白铁皮制成,接缝处焊严,防止漏水,下面有底,上口加盖,上口内壁焊几个掛勾。铁筒安在窖中央,于“三九”天往铁筒四周装满冰块,再浇水把冰块之间的空隙冻实,冰面覆盖20厘米锯末,然后搭上木杆,用秫秸、麦糠和土将窖封上。
At the climax of Tacheng in agriculture, we organized a mass movement to prevent and control Trichophyton gondii from Trichogramma, but no refrigerator, no cold storage, no problem with cold storage of bees, and everyone advocated the spirit of self-reliance and native law enforcement. With soil ice instead of refrigerators, was a success. Specific approach: digging a lower pit in the shade and underground water pit, length, width, depth are 2 meters, central pit placed a diameter of 40-60 cm, 1.5-2 meters high iron tube, body with white Made of metal, the seam weld strict, to prevent leakage, below the end of the mouth stamped, the mouth of the mouth welding a few hooks. Iron tube in the cellar central, in the “three nine” days to the iron tube filled with ice, and then watering the gap between the ice frozen, ice covered with 20 cm sawdust, and then catch the wood, with straw , Wheat bran and soil will be sealed on the pit.