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| Occurrence characteristics of residual film in cultivated soil of peanut planting area in Shandong Province, China |
| Received:January 15, 2021 |
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| KeyWord:soil residual film;residual film amounts;residual film quantity;film mulching years;recovery of plastic film |
| Author Name | Affiliation | E-mail | | WANG Xuexia | Institute of Plant Nutrition and Resources, Beijing Agricultural Forestry Academy Sciences, Beijing 100097, China | | | SONG Ningning | School of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, China | | | XUE Yinghao | Rural Energy and Environment Agency, Ministry of Agriculture and Rural Affairs, Beijing 100125, China | | | WANG Jiachen | Institute of Plant Nutrition and Resources, Beijing Agricultural Forestry Academy Sciences, Beijing 100097, China | | | LIANG Lina | Institute of Plant Nutrition and Resources, Beijing Agricultural Forestry Academy Sciences, Beijing 100097, China | | | LI Mengjia | School of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, China | | | LIU Shuli | Yucheng Agricultural and Rural Bureau, Yucheng 251200, China | | | LIU Dongsheng | Institute of Plant Nutrition and Resources, Beijing Agricultural Forestry Academy Sciences, Beijing 100097, China | LLSLDS@163.com |
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| Abstract: |
| The distribution characteristics and influencing factors of residual film amounts were investigated to accurately evaluate regional plastic film pollution in the peanut cultivated farmland system of Shandong Province, which can provide a scientific basis for preventing and reducing of farmland plastic film pollution in this area. The soil texture, use of plastic film, and other indicators were investigated in 18 farmland samples with 1~15 years of film mulching. The amount and quantity of residual film in different soil layers were analyzed. Results showed that the amount of residual film was 2.48~46.01 kg·hm-2 in the soil layers(0~30 cm) of four typical peanut planting areas in Shandong Province, lower than the limit of residual film in China. The difference was not as evident among different areas. The quantities of residual film increased with the increase of film mulching years. The residual films were mainly found in the 0~10 cm soil layer, significantly higher than that in the 10~20 cm and 20~30 cm soil layers. The amount of residual film significantly decreased with the increase in depth; the residual film tended to move into deep soil with the increase in film mulching years. The film quantity residuals >25 cm2, 4~25 cm2, and <4 cm2 significantly decreased with soil depth. The quantity and ratio of small residuals increased with the increase in mulching years; in particular, the film residuals <4 cm2 increased in the 20~30 cm soil layer, making it difficult to recover film residue in long-term mulched farmland; this may have long-term effects on the soil environment. Therefore, mitigation measures should be taken to increase the recovery of plastic film to reduce plastic film pollution, which can play a positive role in protecting the health of peanut production in this region. |
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