Method for treating cotton field straw and residual biodegradable mulch films

Abstract

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.

Description

technical field [0001] The invention relates to a method for treating cotton field straw and residual biodegradable plastic film. Background technique [0002] In Xinjiang, biodegradable mulches with a longer functional period can meet the needs of cotton during the growth period. For biodegradable mulch that is completely degraded and has a long functional period, the residual amount measured before sowing in the second year is 20-80%. In the current production process, the residual biodegradable plastic film is buried, incinerated, or left untreated. It is labor-intensive and time-consuming to bury, and incineration causes air pollution. If it is directly dumped into the ground without treatment, it will affect the growth of subsequent crops and affect mechanical farming operations. . [0003] Cotton is the main crop in Xinjiang. Due to the large area, it is difficult to turn over stubble. Therefore, the continuous cropping time is very long. Most plots have been continu...

AI Technical Summary

Problems solved by technology

[0002] In Xinjiang, biodegradable mulches with a longer functional period can meet the needs of cotton during the growth period, which is required for production, and can ensure the realization of its warming, moisturizing, and weed growth inhibition effects. However, this type of biodegradable mulch could not Completely degradable, biodegradable mulch with a long functional period, the residual amount measured before sowing in the second year is 20-80%

In the current production process, the residual biodegradable plastic film is buried, incinerated, or left untreated. It is labor-intensive and time-consuming to bury, and incineration pollutes the air. If it is not treated, it will be dumped directly into the ground, which will affect the growth of subsequent crops and affect mechanical farming operations.

[0003] Cotton is the main crop in Xinjiang. Due to the large area, it is difficult to turn over stubble. Therefore, the continuous cropping time is very long. Most plots have been continuously cropped for more than ten years. Fusarium wilt and Verticillium wilt are serious. The organic matter content of Xinjiang soil is low, and the straw is returned to the field. It is an important means of raising land, but returning diseased straw to the field has aggravated the accumulation of disease sources