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红薯是我省主要粮食作物之一。为了夺取红薯高产,必须抓好育足壮苗这一增产环节,才能达到适时早栽、合理密植、种足栽好。近两年来,中牟和临颍等地大面积推广了塑料温室育苗方法。其好处是:(1)出苗早、出苗多、薯苗壮、省种薯。与温床相比,出苗提早6—10天,采苗期提早5天左右,出芽率提高70%,采苗量增加一倍左右。每斤种薯采苗六、七十棵,一亩春薯仅用种50—60斤,与其它方法相比,种薯可节省一半。而且薯苗健壮、叶绿、茎粗、不空心、不黑根。(2)省工、省料、省(?)。建室不用钢架、玻功和砖,群众称之为“土温
Sweet potato is one of the main food crops in our province. In order to seize the sweet potato high yield, we must do a good job of nurturing enough seedlings of this increase in production in order to achieve timely planting early, close and reasonable planting, planting enough. In the past two years, large-scale popularization methods of plastic greenhouse have been popularized in Zhongmu and Linying. The benefits are: (1) early emergence, emergence and more, potato strong seedlings, provincial seed potato. Compared with the hotbed, the emergence of early 6-10 days, seedling early 5 days or so, the germination rate increased 70%, the amount of seedlings doubling. Seed catty catty seed six, seventy, only a kind of sweet potato spring 50-60 kg, compared with other methods, seed can save half. And potato robust, leaf green, stem thick, not hollow, not black root. (2) Labor, material saving, provincial (?). Build a room without steel, glass and brick, the masses call it "soil temperature