查清耕地面积是土壤普查的重要内容之一,必须做好。目前各地较普遍地存在的问题是精度不高,一般都超过省规定的误差限度。为了避免因精度不足而造成返工,特介绍几种在丈量中防止错误和减少誤差的办法,供各地参考。一、工具:要提高丈量面积的精密度,首先要注意丈量工具是否精确。一般应注意以下几方面:1.量距离的工具,应当一律使用竹尺。绳尺的 Identifying the area of ​​arable land is one of the important contents of the soil census and must be done well. At present, the problem that exists more commonly in all parts of the country is that the precision is not high, and the error limit generally prescribed by the province is exceeded. In order to avoid rework due to lack of accuracy, special introduction to several measures to prevent errors and reduce errors for reference. First, the tools: To improve the precision of the measurement area, we must first pay attention to the accuracy of measurement tools. General should pay attention to the following aspects: 1. The amount of distance tools, should always use bamboo ruler. Rope ruler