Method of Land Area Measurement Introduction The accurate measurement of farmland land area can ensure the accurate control of pesticides and the use of seeds. There are differences in area measurement methods for farmland in different regions. Nowadays, the measurement of land area mainly uses the acremeter for rapid and accurate measurement and analysis. By summarizing the measurement methods in various places, the following methods are specifically used:
The first method is to use a tape measure for analysis. That is to say, first multiply the width and length of the lateral land and multiply it by 3, and then change it into a market rule and multiply it. The resulting desire is a square ruler, which is divided by 6,000 square feet, which means that the city will have a market share. This calculation is procedurally complicated. It is not only a waste of time and effort, but also prone to errors. Too many or too few decimal points are calculated. This method has now been replaced by the meter.
The map manipulation method is sent to the relevant land bureau for picking up the map and calculating the ratio on the map, or determining the corresponding land area through the balance weighing method. The scissors cut the map of the area to be measured along the national boundary and put Weigh the mass to m on the balance. Then, on the map, the area of ​​China’s territory is s=S*m/M, and the scale of the map is viewed, and then s is converted into the actual area. S is the size of the entire map, and M is the weight of the entire map.
Instrument method, the specific instrument measuring acre method and total station method, the two methods in the measurement process there is a big difference, the measurement of the acre is measured by the GPS measurement principle, and the total station measurement The principle is that the optical dial is replaced with a photoelectric scanning dial, and the artificial optical micrometer reading is replaced with an automatic recording and display reading, so that the angle measurement operation is simplified, and the reading error can be avoided.
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