Dry farming anti-aging long-acting autumn mulching film, and preparation process thereof

Abstract

The invention provides a dry farming anti-aging long-acting autumn mulching film which meets the requirements that rain is collected and soil moisture is preserved, and autumn rain is used in spring in agricultural production of arid and semi-arid regions. Specifically, the dry farming anti-aging long-acting autumn mulching film is prepared from the following raw materials in percentage by weight: 0.3 to 0.5 percent of polymerization hindered amine light stabilizer, 0.08 to 0.16 percent of complex antioxidant, 73.6 to 81 percent of linear low-density polyethylene, 0.06 to 0.12 percent of ultraviolet absorber, 8 to 15 percent of low-density polyethylene, 5 to 10 percent of metallocene linear polyethylene, and 5 to 10 percent of high-density polyethylene, and the total percentage of all thecomponents is 100 percent. The produced dry farming anti-aging long-acting autumn mulching film effectively meets the requirements that rain is collected and soil moisture is preserved, and the anti-aging time of mulching film coverage during production of crops can reach 300 to 540 days.

Description

technical field [0001] The invention belongs to the technical field of agricultural crops, in particular to the preparation of a mulch film. Background technique [0002] Currently known polyethylene blown agricultural ground covering film, the common mulch film without weathering agent resin masterbatch, the chemical resistance time is 50 days, and the aging resistance mulch film with weathering agent resin, the aging resistance time is 80-120 days (the above data From the national standard of the People's Republic of China, GB13735-92). However, the problem of drought has long been a bottleneck restricting the sustainable development of agriculture in arid and semi-arid areas, and rain-fed agriculture is the mainstay in arid and semi-arid areas, and rainfall is the only source of soil water storage, while precipitation in arid and semi-arid areas is mostly concentrated in In the three months of August, September and October, the annual evaporation is 5-10 times of the prec...

AI Technical Summary

Problems solved by technology

However, the problem of drought has long been a bottleneck restricting the sustainable development of agriculture in arid and semi-arid areas, and rain-fed agriculture is the mainstay in arid and semi-arid areas, and rainfall is the only source of soil water storage, while precipitation in arid and semi-arid areas is mostly concentrated in In the three months of August, September and October, the annual evaporation is 5-10 times of the precipitation, which often results in the spring sowing season, the dry soil layer is thick, the soil moisture is poor, and the spring sowing is difficult. In order to effectively use the limited autumn precipitation resources, the spring The problem of being unable to sow seeds in spring due to severe drought is to cover the effective precipitation from August to October of the previous autumn with plastic film to prevent evaporation and save it until the next spring. It is used for spring sowing. The agricultural plastic film currently on the market in my country The aging resistance time is between 60-120 days, which cannot meet the requirements of agricultural production in arid and semi-arid areas for rain collection and moisture conservation, autumn rain and spring use

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