The problem of soil pollution is becoming increasingly prominent. Pollution prevention and control Brooks no delay.

Editor's note in recent years, the problem of soil pollution in China has become increasingly prominent, resulting in food safety incidents occur from time to time, soil pollution prevention and control Brooks no delay. Some readers wrote that source control is the key to the control of soil pollution, and at the same time, we should improve and improve relevant laws and regulations as soon as possible, popularize soil control technology, return soil cleanliness, and ensure food security.

There is a law to control soil pollution.

As a grass-roots agricultural technology promoter for a long time, the author has witnessed the soil pollution caused by chemical fertilizers, pesticides and agricultural film while helping the majority of farmers to increase production and income. Taking chemical fertilizer as an example, long-term and large-scale use of chemical fertilizer can cause soil consolidation, reduce the number and activity of soil microorganisms, and lead to soil acidification.

In view of the increasingly serious problem of farmland soil pollution, first of all, relevant laws and regulations on soil protection should be issued as soon as possible. At present, the current soil environmental quality standards in China are not perfect, and some aspects are still blank. It is suggested that the Law on Prevention and Control of soil pollution should be promulgated as soon as possible, and the standards of soil pollution, remediation and safety of agricultural products and feed should be revised and improved, so as to realize the prevention and control, supervision and management of soil pollution according to law.

Secondly, farmers should be guided to fertilize and use medicine scientifically. Through publicity and education, we should vigorously encourage farmers to use efficient and environmentally friendly agricultural products, increase comprehensive subsidies for agricultural materials, actively guide the broad masses of farmers to apply fertilizer and medicine scientifically and rationally, and vigorously promote the development of ecological agriculture and agricultural circular economy.

Thirdly, the treatment and remediation of contaminated soil should be promoted. Continue to strengthen the detection of soil conditions, to achieve the combination of general testing and key monitoring, the implementation of normal testing. Timely understand the soil environmental condition, establish the soil environmental quality investigation and monitoring system, construct the soil environmental quality monitoring network, improve the relevant policies, regulations and standards of soil monitoring, treatment and restoration, and truly implement various soil protection policies, speed up the formation of soil environmental protection system, and gradually improve soil environmental quality.

"White pollution" needs to be treated urgently.

Plastic agricultural plastic film technology plays an important role in increasing agricultural production, but with the increase of dosage, the agricultural film left in the field affects the regeneration ability of soil, threatens and destroys the agricultural production environment. Take the Xinjiang production and Construction Corps where the author works as an example, in 2013, the area of residual film pollution in bingtuan was about 10 million mu, accounting for more than 50% of the cultivated land area. The residual agricultural film has become the "white pollution source" of the soil and needs to be treated urgently.

First of all, it is necessary to improve the recovery rate of residual film. The enthusiasm of farmers to remove the residual plastic film can be aroused by raising the recovery price of residual film and carrying out activities such as trading agricultural film for new ones. Through publicity and education, we should gradually guide and cultivate farmers' consciousness as the main body of waste film recycling, and form a good habit of cleaning up residual film in the fields.

Secondly, the recovery mechanism of residual agricultural film was established. Preferential policies should be formulated to increase the subsidy amount of large-scale residual film recycling machines, establish agricultural machinery cooperatives for residual film recovery, and speed up the work of residual film recovery. The active promotion of plastic film higher than 0.01 mm can make up for the additional costs of land producers by means of government subsidies. Increase investment, through the establishment of industry incentive mechanism, promote the recovery of residual film and the promotion and utilization of new biodegradable plastic film, and support the research and development and promotion of waste agricultural film recycling technology.

Finally, the policies and regulations on the residue standard of soil agricultural film should be formulated as soon as possible. We will improve the comprehensive management objectives, assessment methods, rewards and punishments of farmland residual film, increase the scope of services for the recovery and reuse of waste plastic film, and enhance the enthusiasm of the government, farmers, enterprises and society to participate in the utilization of plastic film resources. make the prevention and control of residual film pollution on the track of the rule of law.

Arouse farmers' enthusiasm for governance

Farmers are not only the tillers of the land, but also the main participants in agricultural production. Therefore, in order to control farmland soil pollution, the key is to improve farmers' environmental awareness, mobilize their enthusiasm to control soil pollution, and encourage farmers to take on the social responsibility of protecting soil environment.

First, encourage farmers to increase the application of organic fertilizer, improve the content of soil organic matter, and enhance the adsorption capacity of soil colloids for heavy metals and pesticides. Increasing the application of organic fertilizer can not only reduce soil pollution, but also effectively eliminate diseases, insects and weeds, and give full play to the positive efficacy of pesticides. Apply pesticides and chemical fertilizers scientifically and control the dosage and scope of chemical pesticides. Biotechnology should be adopted to control crop diseases and insect pests to avoid the use of highly toxic and high residual pesticides.

Second, change the farming mode of farmers, promote the change of soil environmental conditions, and eliminate the harm of some pollutants. According to the types of soil pollutants, plants with strong absorptive capacity can be planted, the content of toxic substances can be reduced, or the soil can be purified by biodegradation, or by means of soil change and deep turning, the direction of migration and transformation of pollutants in the soil can be changed. reduce the absorption of crops. Grow non-food crops on contaminated soil to reduce contaminants into the food chain.

Third, construct the promotion mechanism of the combination of soil planting and cultivation. It is necessary to change the short-sighted behavior of some farmers of "planting but not raising" and "thick planting and thin cultivation", establish an account for the soil physique of agricultural land, and implement the soil physical examination system of contracted land and transferred agricultural land. A subsidy system for soil conservation can be established to include the application of farm manure and organic fertilizer into the scope of subsidy, and farmers are encouraged to accumulate more farm manure and apply more farm manure to ensure soil health.