摘要
通过地膜覆盖栽培试验、曝晒试验和填埋试验对5种全生物可降解地膜和1种普通PE地膜在玉米生产中的应用进行对比研究。结果表明:在玉米生育前期,J2、J3全生物可降解地膜覆盖保温效果较其他全生物降解地膜好,白膜保温效果比黑膜好。曝晒和栽培条件下,全生物可降解地膜降解特性表现一致。除J5地膜降解过快外,其余全生物可降解地膜的诱导期均在70 d以上,能充分满足作物生长发育的需要。在土壤中,全生物可降解地膜J2能快速降解。全生物可降解地膜覆盖对玉米生育无明显影响。地膜覆盖玉米产量均高于露地;降解地膜J3的玉米产量最高。权重分析结果表明,J3农田适应性最好,其次为J2,最差为J4。
The applications of 5 fully biodegradable plastic films and 1 common PE film in maize production were compared by film mulching cultivation test,exposure test and landfill test in this paper.The results showed that the thermal insulation effects of fully biodegradable film mulching J2 and J3 were better than that of other biodegradable films,and the effect of white film was better than that of black film.Under the conditions of exposure and cultivation,the degradation characteristics of the fully biodegradable mulch films were same.Except that J5 was degradation too fast,the induction period of other biodegradable mulching films was above 70 d,which can fully meet the needs of crop growth and development.In the soil,biodegradable J2 was degraded rapidly.Full biodegradable plastic films mulching had no an obvious effect on maize growth.The yield of maize covered with plastic film was higher than that in the open field,and the yield of Maize with J3 was the highest.According to the analysis of factor weight,J3 had the best farmland applicability,followed by J2 and J4 was the worst.
作者
王春丽
王莉玮
易廷辉
卞京军
WANG Chunli;WANG Liwei;YI Tinghui;BIAN Jingjun(Chongqing Agricultural Environment Monitoring Station,Chongqing 401121,China)
出处
《环境保护科学》
CAS
2020年第1期91-96,共6页
Environmental Protection Science
关键词
全生物可降解地膜
玉米
农田适应性
Fully Biodegradable Film
Maize
Farmland Applicability
