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一、意义 中比例尺的土壤制图工作(1:50,000—1:200,000)应当是为了畜牧业或者农业规则而进行的。自然,在我国的农业地区,进行这样的工作,应当特别注意生产方面存在的问题。 我国西部有广大面积的山区未曾进行过土壤普查工作,或是那些地区的普查工作的成果不够理想,为了因地制宜的发展农业生产,很需要在这些地区首先进行中比例尺的制图工作。 中比例尺的制图工作,是需要在比较短促的时间以内,完成大面积的土壤分布图的。 二、工作特点与进行方法
First, the meaning of the scale of soil mapping work (1: 50,000-1: 200,000) should be carried out for livestock husbandry or agricultural rules. Naturally, in the agricultural areas of our country, such work should be paid special attention to the problems in production. In the vast mountainous areas in the western part of our country, no soil census has ever been conducted or the results of the census work in those areas are not satisfactory. In order to develop agricultural production according to local conditions, it is necessary to carry out medium-scale cartographic work first in these areas. Medium-scale mapping work is the need to complete a large area of the soil profile in a relatively short period of time. Second, the characteristics of work and methods