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为了提高水稻田间需水量试验测试精度,达到“全国灌溉试验新规范”要求,黑龙江省绥棱县水利局试验站于1990年春季利用体积比例法制作了一种简易的量水槽,利用它可使水稻田间需水量测试精度达到了0.1毫米。这种量水槽具有结构合理,节省材料、易于制作,操作方便,测试精度高等优点。其具体制作测试方法及原理如下: 一、制作材料与使用方法首先,利用1毫米厚铁皮,经准确剪板下料,用电焊焊成规格为200毫米×157.1毫米×150毫米的矩形槽,(见示意图)。再准备好的铁板剪成长457.1毫米,宽210毫米的矩形,然后沿长边一端150毫米、307.1毫米两处与短边平行划线并向内折90度角成一矩形槽、然后焊上两个规格为157.1毫米×150毫米的
In order to improve the testing precision of water requirement in paddy field and reach the requirements of “New Code for National Irrigation Experiment”, the experimental station of Suiling County Water Conservancy Bureau in Heilongjiang Province made a simple volume measuring tank by volume proportion method in the spring of 1990, Paddy field water demand test accuracy reached 0.1 mm. This amount of sink with a reasonable structure, save material, easy to make, easy to operate, high precision and other advantages. The specific production test methods and principles are as follows: First, the production of materials and methods of use First of all, the use of 1 mm thick sheet metal, cut the material accurately cut, welded into a standard size of 200 mm × 157.1 mm × 150 mm rectangular slot, ( See diagram). The prepared cutters were then grown to 457.1 mm and a rectangle 210 mm in width, then scribed in two parallel lines at 150 mm and 307.1 mm along the long side and folded 90 degrees inward into a rectangular groove, A specification of 157.1 mm × 150 mm