In the rural fields, an agriculture uav drone about 1 meter long took off, and a bird's eye view of the farmland suddenly appeared on the computer display.
This scene of Sanyuan Village, Yandian Township, Feixi County attracted many farmers to stop and watch. This is not that photography enthusiasts are shooting farmland scenery, but that the staff of the National Bureau of Statistics Anhui Investigation Corps is conducting the third agricultural survey of crop area remote sensing survey. The staff is using the "new weapon" of modern agricultural statistical surveys-drone remote sensing measurement system. This is also the first time drone equipment is used in an agricultural census.
"In the past, there were two methods for censuses of farmland: one was to walk around the farmland with a GPS locator; the other was to manually measure on the ground with a tape measure. The former was not accurate enough and the latter was costly "Shen Jianping, the captain of the survey team of the National Bureau of Statistics of China, looked at the drone in the sky. Time. Now, we don't have to go barefoot, roll up the corners of our pants, and run into the mud to measure. "
It is understood that the photos obtained by the drone are uploaded directly to the relevant software. The staff can then visualize the spatiotemporal distribution of the crop planting situation by stitching, cropping, processing, extracting, and analyzing the photos. Accurate detection provides technical support for obtaining richer and multi-dimensional data, improving census accuracy and working efficiency.
"If a agriculture uav drone worker wants to be good, he must first sharpen his weapon." A series of high-tech methods used in the census were visually summarized as "sky land" by Liu Guoguang, director of the Agricultural Division of the Anhui Investigation Corps of the National Bureau of Statistics. In the sky, each inch of agricultural land is photographed by satellite remote sensing, large-scale macro measurements are made, and the sample is randomly selected. In the air, the drone follows the preset route and surrounds the sample for a week to take detailed pictures of the sample to perform detailed On the ground, workers carry PDAs (hand-held intelligent data acquisition terminals) with them. The PDAs not only have the function of navigation, but also can collect real-time sample data on the spot.
"High efficiency is one of the advantages brought by these high-tech. Improving the census is the focus of this time." Liu Guoguang said, "This census will require remote sensing camera, analysis and extraction during the period of crop growth, WYSIWYG, It is more objective and accurate, while the first two surveys were conducted by using farmers' memories or relying on administrative records. Drones and remote sensing technology are the development trends of future agricultural statistical surveys. They will be used in food area surveys, agricultural disasters, droughts, and pest and disease surveys. Play a broad role. "
"Big Agriculture" as the census object "Crop area, major crops, minor crops, and multiple cropping, these information will be filled into the field survey of crop area remote sensing measurement." The relevant staff of the Anhui Bureau of the National Bureau of Statistics said that the third agricultural census set up farmers There are 6 census forms, census forms for large-scale agricultural business households, census forms for agricultural business units, census forms for administrative villages, census forms for towns and villages, and field survey forms for remote sensing measurement of crop areas, which strive to comprehensively reflect agriculture, rural areas and Farmers' situation.
"This census is a 'big agriculture' census. The industries covered by the census include plantation, forestry, animal husbandry, fisheries, agriculture, forestry, animal husbandry and fishery services. The census is targeted at rural households, including rural agricultural production and operation households and other households, Urban agricultural production and operation households, agricultural production and operation units, villagers' committees, and township people's governments. "Liu Guoguang told reporters that the census involved more than 14,000 administrative villages in our province, of which 1,200 administrative villages were measured by remote sensing of crop area, and second-level measurements There are more than 14,000 administrative villages, and 88.606 million mu of arable land are surveyed in the province.
It is understood that, while maintaining the basic framework of the second agricultural census, the third agricultural census carried out a large innovative design of the census form and its contents. For example, for the first time, a general survey was conducted to distinguish between large-scale agricultural business households and ordinary agricultural business households. The census content of large-scale agricultural business households is more comprehensive and informative, so as to accurately reflect the new development of new agricultural business entities and large-scale agricultural and industrial development. Secondly, the economic and social development indicators of formed towns and districts are greatly increased in the township census to fully reflect the development of new urbanization. In addition, while the administrative village census table reflects the basic economic and social situation of the administrative village, it also reflects the situation of rural infrastructure and rural human settlements.