The invention provides a method for treating cotton field
straw and residual biodegradable
mulch films.The method comprises the following steps that before autumn ploughing of a cotton field, the
straw and the surface residual biodegradable
mulch films are collected, and the smashed
straw and the residual biodegradable
mulch films are loosely stacked together and are not treated any more in the current year; composting treatment is carried out and completed from 25th May to 10th September of the next year, the cotton field straw and residual biodegradable mulch films stacked in the last year are evenly mixed with waste
fungus bag residues or
saw dust and animal
manure in proportion, and a proper number of biological
bacteria are mixed; stack turning and humidification are carried out, and
fermentation is started when
water content in the materials reaches the level that water stains are left on the hand and no water drop is pinched out when the materials are pinched by hand; the
water content is controlled, stack turning is carried out in time, and the
humidity of the material stack is controlled; the materials are covered when it rains in the composting process, and composting is completed in 40-60 days.According to the method,
bacteria and pests of the straw can be killed, and increase of the cardinal number of cotton field bacterium sources and the
population cardinal number of pests is effectively restrained, so that the straw is returned to the field safely and effectively, and meanwhile all the residual biodegradable mulch films are degraded.