There are three main principles for the remediation technology of soil pollution in farmland:
First, it is technically feasible, and if the effect of the soil remediation technology on the polluted farmland is good, it can reach the expected goal and can be implemented and popularized in a large area.
Second is economically feasible, the cost of governance can not be too high, so that the rural and farmers can afford and facilitate the promotion. We should try to adopt the technology with high maturity and operability.
Techniques such as phytoremediation, microbioremediation, and so on, should be chosen as far as possible to minimize the negative effects of soil fertility and productivity.
During the implementation process of farmland soil remediation technology, do not bring in new pollutants, do not generate secondary pollution, and will not have adverse effects on farmland soil environment, crops and surrounding environment and people’s health, and the risk is acceptable.
We should not simply copy the existing technology of farmland contaminated soil treatment. We should consider comprehensively the factors such as the area of soil pollution, the type of pollution, the degree of pollution, the time to repair, the cost and the future use of the land. After scientific demonstration, a reasonable repair technology is chosen.