It's a big deal. While rice, as the staple food of the nation, is inextricably linked to people's lives, its current status is not encouraging. Land contamination and food stereotyping are important factors that directly endanger rice security. As industry, urban pollution and the variety of agrochemical substances increase and the pollution of heavy metals in the soil increases, the level of pollution increases year by year. The soil spot contamination rate in our arable land is 19. 4 per cent, with cadmium, nickel, copper, arsenic, mercury, lead, etc. Being the main culprit. The national total abruptly exceeded the target by 16. 1 per cent, of which 11. 2 per cent, 2. 3 per cent, 1. 5 per cent and 1. 1 per cent were slightly, slightly, moderately and severely contaminated. Moreover, soil contamination is characterized by the fact that pollutants are difficult to transfer and heavy metals are difficult to degrade, and once pollution is created, measures to cut off sources of pollut...