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“电热温床育苗”一文在《林业科技通讯》1981年第3期上刊出后,很多单位来信、来访询问电热温床的具体敷设方法及其器材的选用等问题,本文拟就这些问题作一补充介绍。一、电热温床的耗电量电热温床所耗电量的大小与加热温度、环境温度的高低和介质(即育苗土壤)的性质、日照情况等因素有关。通过计算和实测验证,在无日照情况下,当加热线敷设深度为70毫米,加热线周围的介质被加温至30℃时,每平方米温床所需电量如下表。
After the article was published in Forestry Science and Technology Newsletter No. 3, 1981, many units wrote a letter asking them to discuss the specific laying methods of electric hotbed and the selection of their equipment. This article intends to supplement these problems Introduction. First, electric hotbed power consumption Electric hotbed consumed by the size of the heating temperature, ambient temperature level and the medium (ie seedling soil) nature, sunshine conditions and other factors. Through calculation and field test, when the heating line laying depth is 70 mm and the medium surrounding the heating line is warmed to 30 ° C, the power consumption per square meter of the hotbed is as follows in the absence of sunshine.