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在蒙自县草坝公社土壤普查试点中,我们采用1966年12月至1967年1月拍摄的万分一航摄相片作为工作底图。成果图采用原农林厅水利局实测的万分之一地形图。通过实践认为,航片客观地反映了全部地貌地物,可以从影像形状、大小、色调、阴影、图案等比较确切地鉴别调查范围的实际情况,尤可以帮助初学普查的同志较准确在图上反映土壤的分布界线和土地利用现状界线,既提高了各种成果图的质量,又加快了调查进度。具体做法是:
In the trial of the soil census of the Caoba commune in Mengzi County, we adopted a very aerial photos taken from December 1966 to January 1967 as the base map. The results of the original map with the former Bureau of Agriculture and Forestry Water Authority measured ten thousandth topographic map. Through practice, the aerial photos objectively reflect all the landform features, and can accurately identify the actual situation of the survey area from the image shape, size, tone, shadow, pattern, and the like, and can help the comrades of the beginner census to be more accurate on the map Reflect the boundaries of soil distribution and land-use status of the boundary, not only improve the quality of the various results map, but also speed up the progress of the investigation. The specific approach is: