The development and utilization of new environmental film is an important measure to tackle the residual film pollution, protect the ecological environment and promote the sustainable development of agriculture. The t...The development and utilization of new environmental film is an important measure to tackle the residual film pollution, protect the ecological environment and promote the sustainable development of agriculture. The types of new environmental film and their development status were reviewed from the aspects of photodegradable film, biodegradable film, photo-biodegradable film, liquid film, paper film and bast fiber film. In terms of the experimental research status of environmental films in China, analysis and comparisons were made from three aspects including the different types, the same type and imported environment-friendly film. Suggestions were proposed for the research and development prospect of environmental film.展开更多
Long-term and widespread use of plastic mulching has led to the accumulation of residual plastic film(RPF)in farmland soils of Xinjiang,China.However,there is no specific quantitative basis for RPF pollution or a clea...Long-term and widespread use of plastic mulching has led to the accumulation of residual plastic film(RPF)in farmland soils of Xinjiang,China.However,there is no specific quantitative basis for RPF pollution or a clear understanding of the influence of residual film on crop growth.The aim of this study was to investigate the effect of RPF on the growth of cotton,an important cash crop of Xinjiang.Based on the field conditions and previous reports,various amount of residual film was applied in 0-30 cm soil layer.The growth index including emergence rate,dry matter,and yield of cotton was examined at different growth stages under different soil residual film levels.Results demonstrated a significant effect of RPF on soil moisture distribution and movement.Plastic residues had a significant effect on cotton growth at levels above 200 kg/hm2,and the yield decreased as the RPF amount increased.Based on these findings,200 kg/hm2 was suggested as a threshold level to determine the effects of RPF on cotton.This study provided a basis to rate RPF pollution in farmland soils and help understand the impact of pollution on crop productivity.展开更多
基金Supported by the Key Programs for Science and Technology Development of Shanxi Province(20140311007-4)
文摘The development and utilization of new environmental film is an important measure to tackle the residual film pollution, protect the ecological environment and promote the sustainable development of agriculture. The types of new environmental film and their development status were reviewed from the aspects of photodegradable film, biodegradable film, photo-biodegradable film, liquid film, paper film and bast fiber film. In terms of the experimental research status of environmental films in China, analysis and comparisons were made from three aspects including the different types, the same type and imported environment-friendly film. Suggestions were proposed for the research and development prospect of environmental film.
基金This work was financially supported by National key R&D plan of China(No.2017YFD0701102)the Corps key R&D projects(No.2019AB007)+2 种基金the Special Fund for Agroscientific Research in the Public Interest(No.201503105)and the National Natural Science Foundation of China(Grant No.11562019)The authors are grateful to the farmers of the trial area for their cooperation.
文摘Long-term and widespread use of plastic mulching has led to the accumulation of residual plastic film(RPF)in farmland soils of Xinjiang,China.However,there is no specific quantitative basis for RPF pollution or a clear understanding of the influence of residual film on crop growth.The aim of this study was to investigate the effect of RPF on the growth of cotton,an important cash crop of Xinjiang.Based on the field conditions and previous reports,various amount of residual film was applied in 0-30 cm soil layer.The growth index including emergence rate,dry matter,and yield of cotton was examined at different growth stages under different soil residual film levels.Results demonstrated a significant effect of RPF on soil moisture distribution and movement.Plastic residues had a significant effect on cotton growth at levels above 200 kg/hm2,and the yield decreased as the RPF amount increased.Based on these findings,200 kg/hm2 was suggested as a threshold level to determine the effects of RPF on cotton.This study provided a basis to rate RPF pollution in farmland soils and help understand the impact of pollution on crop productivity.