With the rapid development of the economy, people's living standards are constantly improving. The demands for the consumption of agricultural products have also increasingly tended to be safe and healthy. Therefore, pollution-free agricultural products are in line with consumer demand, and are also an important measure to adapt to the laws of the market and promote the adjustment of agricultural structure to deeper levels. At the same time, it is also necessary to protect our ecological environment and improve the competitiveness of China's agricultural products. The agricultural environmental monitoring station can effectively monitor the agricultural environment in which crops grow and provide assistance for research.
There are 8 soil copper contents exceeding the soil environmental quality standard (pH<6.5, ≤50mg/kg), accounting for 80% of the measured value, and the highest exceedance rate is nearly 4.8 times. The pollution degree is closer to the discharge port and the pollution is more serious. In particular, the content of copper in the river mud around the discharge port was as high as 450.7 mg/kg. An important indicator for assessing the extent of heavy metal pollution in vegetables is the area and yield that are contaminated. According to surveys, the contamination of vegetables, copper, zinc, and chromium in the five major vegetable bases of the city is mild, while the pollution of lead and cadmium is serious. The statistical results show that moderate lead pollution in vegetables accounts for 30.5% of the surveyed area, 40.4% of the surveyed output, heavy pollution accounts for 2.56% of the surveyed area, and 1.74% of the surveyed output. The moderate pollution of cadmium accounted for 52.4% of the surveyed area, accounting for 52.1% of the surveyed production, heavy pollution accounted for 8.41% of the surveyed area, and accounted for 8.76% of the surveyed output. The above data shows that the degree of harm caused by heavy metal pollution in vegetable bases in our city is cadmium. >Lead> Chromium> Copper> Zinc, which is basically the same as soil contamination, which fully shows that vegetables are mainly contaminated by heavy metals. In other words, soil pollution directly harms the quality of vegetables.
Through monitoring and analysis at agricultural environmental monitoring stations, heavy metals and nitrate pollution in soil, rice, and vegetables mainly come from industrial “three wastesâ€, urban domestic waste, and excessive application of chemical fertilizers. Therefore, industrial “three wastes†emissions and urban domestic waste must be strictly controlled. Randomly spread. We must do a good job in the construction of agro-ecological environment and prevent and control environmental pollution. Vigorously promote balanced fertilization techniques, in particular, control the amount of chemical nitrogen fertilizer application, promote reasonable application of nitrogen, phosphorus, potassium, and organic fertilizer, and strengthen the development and utilization of bio-fertilizer and commodity organic fertilizer.
There are 8 soil copper contents exceeding the soil environmental quality standard (pH<6.5, ≤50mg/kg), accounting for 80% of the measured value, and the highest exceedance rate is nearly 4.8 times. The pollution degree is closer to the discharge port and the pollution is more serious. In particular, the content of copper in the river mud around the discharge port was as high as 450.7 mg/kg. An important indicator for assessing the extent of heavy metal pollution in vegetables is the area and yield that are contaminated. According to surveys, the contamination of vegetables, copper, zinc, and chromium in the five major vegetable bases of the city is mild, while the pollution of lead and cadmium is serious. The statistical results show that moderate lead pollution in vegetables accounts for 30.5% of the surveyed area, 40.4% of the surveyed output, heavy pollution accounts for 2.56% of the surveyed area, and 1.74% of the surveyed output. The moderate pollution of cadmium accounted for 52.4% of the surveyed area, accounting for 52.1% of the surveyed production, heavy pollution accounted for 8.41% of the surveyed area, and accounted for 8.76% of the surveyed output. The above data shows that the degree of harm caused by heavy metal pollution in vegetable bases in our city is cadmium. >Lead> Chromium> Copper> Zinc, which is basically the same as soil contamination, which fully shows that vegetables are mainly contaminated by heavy metals. In other words, soil pollution directly harms the quality of vegetables.
Through monitoring and analysis at agricultural environmental monitoring stations, heavy metals and nitrate pollution in soil, rice, and vegetables mainly come from industrial “three wastesâ€, urban domestic waste, and excessive application of chemical fertilizers. Therefore, industrial “three wastes†emissions and urban domestic waste must be strictly controlled. Randomly spread. We must do a good job in the construction of agro-ecological environment and prevent and control environmental pollution. Vigorously promote balanced fertilization techniques, in particular, control the amount of chemical nitrogen fertilizer application, promote reasonable application of nitrogen, phosphorus, potassium, and organic fertilizer, and strengthen the development and utilization of bio-fertilizer and commodity organic fertilizer.
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