| abstract |
The present invention is a composition comprising starch, biodegradable resins, plasticizers and fertilizers, the content of the starch is 20 to 40% by weight based on the total weight of the composition, the content of the fertilizer is 0.5 to 15 based on the total weight of the composition Wt%, the biodegradable resin is included in 100 to 250 parts by weight per 100 parts by weight of starch, the plasticizer provides a composition for mulching film, characterized in that contained in 5 to 25 parts by weight per 100 parts by weight of starch. Mulching film produced by the molding of the composition for mulching film of the present invention, while satisfying the predetermined physical properties (eg tensile strength, elongation, weather resistance, etc.) required for agricultural mulching film during crop cultivation, There is no loss of fertilizer in external environmental conditions such as wind, and at the same time, it can be gradually decomposed and fertilized in a natural state, and can also function as a sustained-release fertilizer by releasing fertilizer continuously during decomposition. Therefore, the mulching film of the present invention can be used for the purpose of protecting crops and supplying nutrients to soil when growing crops in various environments. There is no need for post-collection and incineration, saving labor without causing environmental pollution. |