Soil test center
China Geological Survey
geology can detect soil. China Geological Survey is a vice ministry level institution directly under the Ministry of land and resources. According to the national land and resources survey plan, it is responsible for the unified deployment and organization of the national basic, public welfare, strategic geological and mineral exploration work
provide basic geological information for national economic and social development, and provide public welfare services to the society
extended data:
soil environmental monitoring at present, China's standards for soil environmental monitoring include technical specification for soil environmental monitoring (HJ / T 166-2004), which belongs to the environmental protection instry standard of the people's Republic of China
general soil monitoring can be divided into national regional soil background, farmland soil environment, soil environmental assessment of construction projects, soil pollution accidents and other types of monitoring
1. Simple random:
divide the monitoring unit into grids, number each grid, determine the number of samples at the sampling point, and randomly select the samples with the specified number of samples, and the grid number corresponding to the sample number is the sampling point. Random number can be obtained by rolling dice, drawing lots and looking up random number table
2, block random:
according to the collected data, if there are several types of soil in the monitoring area, the area can be divided into several blocks, the pollutants in each block are more uniform, and the differences between blocks are obvious. Each block is regarded as a monitoring unit, and then randomly distributed in each monitoring unit
on the premise of correct block, the representativeness of block distribution is better than simple random distribution. If the block is not correct, the effect of block distribution may be counterproctive
3, system random:
divide the monitoring area into several parts with equal area (grid division), and set a sampling point in each grid, which is called system random distribution. If the content of soil pollutants in the region changes greatly, the representativeness of samples collected from systematic random distribution is better than that from simple random distribution
the grass-roots agricultural system is eager to make money. Generally, the fees are not low, and most of them may not have the corresponding good conditions to do such tests.
however, some soil statistical data can be checked. Consult the County-Level Agricultural Technology Extension center or soil fertilizer station.
if there is a water quality problem, you doubt the water quality near your residence, You can get it to the environmental monitoring department for testing, but you can't do it by yourself.
if you want to consider planting something good, such as soil quality and water quality, you don't have to think too much about it. Just ask the agricultural grass-roots department