在土壤普查中,将基层图件逐级拼接成高一级图件,一般采用地物控制或方格控制法缩绘。这两和方法费时多,且难以保证精确度。为此,我们试用海鸥牌4B型照相机(以6×6cm画面)翻拍大队1:2000拼幅土壤图。缩小25倍,经放大机放大5倍, In the soil census, the grass-roots map piece by level splicing into a higher level map, the general use of feature control or grid control method of drawing. Both of these methods are time-consuming and difficult to guarantee accuracy. To this end, we try the Seagull 4B camera (6 × 6cm screen) to remake the battalion 1: 2000 scraps soil map. Shrink 25 times, enlarge by 5 times,