Soil is both a natural component and the most important natural resource for agricultural production. As an important part of soil quality, soil environmental quality is the ability to characterize the ability of the soil to contain, absorb, and degrade a variety of environmental pollutants for its sustainable use as well as for other environmental factors, especially for the survival, reproduction, and socio-economic development of humans or other organisms. The suitability. The quality of soil environmental quality directly affects the quality of agricultural products, which in turn affects human life and development. In recent years, rapid industrial development, advancement of urbanization, and unreasonable use of land by humans have brought about problems such as heavy metal pollution in soil, declining soil environmental quality, and destruction of soil ecosystem functions, which in turn threaten the safety of agricultural production areas. The safety of agricultural production areas means that the soil, water, and atmosphere of agricultural production areas meet the requirements for production quality and safety of agricultural products. The evaluation of soil environmental quality in agricultural production areas is the basic work to ensure the safety of agricultural production areas.
Because different indicators have different effects on the soil environmental quality of agricultural production areas, when assessing soil environmental quality for different types of production areas, different factors in the evaluation index system need to be given different weights to comprehensively measure the soil environmental quality in the production areas. situation.
Soil environmental quality evaluation method for agricultural production areas is to collect samples from the field, use single pollution index and comprehensive pollution index to calculate the pollution value of each factor, compare the detection results with evaluation standards to check the pollution level, and finally calculate the sample point that meets the standard. The proportion of soil environmental quality in the study area was determined. TPY-9PC Highly Intelligent Soil Environmental Testing and Analysis and Evaluation System Passes Nitrogen, Phosphorus, Potassium, Organic Matter, Acidity, Basicity, Humic Acid, Salt, PH, Soil Hardness, Compaction, Soil Moisture, Soil Temperature in Soil and Fertilizer, The test of atmospheric temperature and the temperature of corrosive toxic liquids was performed to measure the content of soil environmental quality assessment factors in the production areas of various agricultural products.
One of the important factors affecting the reliability of soil environmental quality assessment results in agricultural production areas is the placement and representativeness of sampling sites. At present, the soil environmental quality assessment standards do not clearly specify what kind of layout method and the rationality and representativeness of the number of sampling points are adopted at a certain scale. In theory, the more sampling points, the more accurate the evaluation, but the number of sampling points is proportional to the workload, taking into account the complex topography of agricultural production areas, soil types, affecting the soil environmental quality assessment results are reasonable and accurate. Therefore, the method of setting sampling points of soil environmental pollutants and the representativeness of sampling points are problems that need to be further solved in the evaluation of soil environmental quality of agricultural production areas.
Combine Harvester,Harvester Machine,Rice Harvester,Small Combine Harvester
Hunan Nongyou Machinery Group CO.,LTD , http://www.ricemill.nl