In the face of the global plastic crisis, what can agriculture do?
First analysis of the main areas of agricultural plastic under the field
Agricultural plastic according to the application areas are mainly agricultural cover materials; agricultural water pipelines and water-saving equipment; agricultural plastic packaging materials and planting, breeding, storage of various materials. Agricultural film is China's plastics industry, the most important part is Modern agricultural development important means of production.
Since the production of agricultural plastic film in China, it has achieved the first place in the world in terms of output and number one, covering roughly 1.6 times the total of other countries in the world. According to incomplete statistics, at present, the whole industry owns agricultural film producers Nearly a thousand, production capacity of 2000000 tons, of which annual production capacity of more than tons of about 60 enterprises, about 30 large-scale backbone enterprises, its production capacity and annual output accounted for 60% of the national total. The volume has reached 700,000 tons, covering an area of 50 million mu; annual sales of about 450,000 tons of membrane, covering an area of more than 220 million mu; actual consumption of agricultural film has more than 1.2 million tons.
We can do now is to minimize the use or recycling of plastic sheeting, after all, the Earth is all of us!
In accordance with the concept of circular economy of "reduction, resource utilization and reuse", we accelerated the recovery, recycling and resource utilization of waste plastic sheeting, turned waste into treasure, and promoted the pollution reduction in rural areas to improve the efficiency of resource utilization , To maximize the use of resources, recycling and sustainable use.
For the plastic sheeting problem we should do
Recommended for a film for two years or a film for many years with different methods of film has an impact on the amount of plastic film, plastic film double furrow irrigation using plastic film than the whole film tiled use of more than 19.00 kg / hm2, Different film mulching methods affect the amount of mulching film. Different film mulching methods have little or no effect on crop yield (P <0.05), but they affect the residual of plastic film in the soil. Film mulching ≥0.008 mm is recommended.
The comparative analysis of plastic film with double-furrow irrigation and full-film tiling shows that the former is larger than the latter and increases by 21% The residual coefficient in soil was 0.54, while the residual coefficient of all film tiling was 4.03. The residual amount of plastic film in soil was less than that in full film and double furrow irrigation. The residual amount is small, indicating that the residual film mulching by plastic film way, we recommend the use of full film double furrow irrigation film method.Marine film yield increased significantly (P <0.05), but covering different thickness of plastic sheeting The yield of the latter two maize varieties did not change significantly (P <0.05), indicating that the different plastic film thickness had little or no effect on the corn yield; the plastic film thickness had an impact on the residual plastic film in the soil with a thickness of 0.010 mm Agricultural film than the thickness of 0.008 mm of the plastic film in the soil residue is smaller, the recommended thickness of ≥ 0.008 mm of plastic sheeting.