全生物可降解地膜在花生栽培上的应用及其降解性能
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摘要
针对普通PE地膜在花生覆膜栽培中的环境污染问题,进行2种全生物可降解地膜与普通PE地膜的对比试验研究,重点监测土壤温度、水分及花生产量的差异,通过作物覆膜栽培试验、暴晒试验和填埋试验的立体化研究,评价地膜的应用效果和降解程度。结果表明:全生物可降解地膜与普通PE地膜的保温保水作用基本一致,不同降解地膜间无明显差异;地膜覆盖能够大幅度提高产量,全生物可降解地膜比普通PE地膜产量有所增加,同时全生物可降解地膜具有明显的降解效果,可有效减缓对土壤的污染残留。
In view of the environmental pollution problems of peanut mulching,comparative experiments on two biodegradable mulching films and ordinary PE films were conducted. The effects of mulching films on soil temperature,moisture and yield were studied. Through the crop cultivation experiment,exposure test and landfill test of the three-dimensional study to determine the application effect and degree of degradation of the film. The results showed that thermal insulation and water retention of biodegradable plastic films were the same as that of the ordinary PE film,and there was no significant difference between different degradation mulching films.Comparing with the ordinary PE film,biodegradable plastic film increased the yield and biodegradable effect obviously.
In view of the environmental pollution problems of peanut mulching,comparative experiments on two biodegradable mulching films and ordinary PE films were conducted. The effects of mulching films on soil temperature,moisture and yield were studied. Through the crop cultivation experiment,exposure test and landfill test of the three-dimensional study to determine the application effect and degree of degradation of the film. The results showed that thermal insulation and water retention of biodegradable plastic films were the same as that of the ordinary PE film,and there was no significant difference between different degradation mulching films.Comparing with the ordinary PE film,biodegradable plastic film increased the yield and biodegradable effect obviously.
引文
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[2]员学锋,吴普特,汪有科,等.地膜覆盖保墒灌溉的土壤水、热以及作物效应研究[J].灌溉排水学报,2016(1):25~29.
[3]董俊,邓林军,靖凯,等.辽西地膜花生栽培技术研究[J].农业科技与装备,2010(10):73~74.
[4]严昌荣,刘恩科,舒帆,等.我国地膜覆盖和残留污染特点与防控技术[J].农业资源与环境学报,2014(2):95~10.
[5]王鑫,胥国斌,任志刚,等.无公害可降解地膜对玉米生长及土壤环境的影响[J].中国生态农业学报,2007(1):78~81.