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随着農田水利事業的發展,要求加强并提高灌溉試騐研究工作的科学水平,保証研究成果的可靠性和精确性,使其能在生產上推廣应用。因此,我們必需测定土壤湿度,了解水分在土壤中的运动狀况。在尚未有电力条件的地区,可以采用簡易烘箱來代替电烘箱,以便進行土壤湿度的測定工作。簡易烘箱的构造:烘箱的周壁和盖子都是用白鉄皮做成的,为了保持箱內溫度,在白鈇皮內侧利用鉄絲網夾上一层一公分厚的石棉。周壁的兩側有
With the development of farmland water conservancy, it is required to strengthen and improve the scientific level of experimental irrigation research and ensure the reliability and accuracy of research results so that they can be popularized and applied in production. Therefore, we must measure the soil moisture to understand the movement of water in the soil. In areas where electricity is not yet available, simple ovens can be used instead of electric ovens for the determination of soil moisture. Simple oven structure: the oven wall and the lid are made of white skin, in order to maintain the temperature inside the white skin, the use of silk mesh clip on a layer of a centimeter thick asbestos. There are two sides of the perimeter wall