1, in Huadian planting area, 2P copper is more than 1, which means that the copper in the soil exceeds the standard, and the soil is seriously polluted by copper, which will endanger the healthy growth of plants.

2. The soil cadmium pollution in the black soil planting area is serious, and the cadmium content in the surface soil is 1.8 ~ 17.9 times that in the lower soil.