法国进口生物降解地膜在烤烟生产上的应用效果研究

Study on Effects of Application of Biolice Film Imported from France in Tobacco Production

为降低当前烟叶生产中推广使用常规聚乙烯(PE)地膜造成的"白色污染",2012年在昆明寻甸开展了法国进口生物降解地膜的小区试验研究,为其利用和改进提供科学依据.结果表明,法国进口生物降解膜从覆盖15 d后便有明显降解,至栽后120 d揭膜时累计降解率接近70%.它对烟草的主要经济性状影响不明显,基本可以替代当前普遍推广使用的白色普通PE地膜.但尚存在对土壤保水性能不足、对烟株早生快发不利、烟株生育期有所推迟和烟株主要农艺性状的生长发育受到一定限制等不利因素.因此,尚需要扩大此类生物降解地膜的应用区域,进一步探清其性能特点,才能更好地为烟叶生产服务.

In order to reduce the ＂white pollution＂ caused by using conventional polyethylene （ PE ） ground film in the current tobacco production. A plot trial of biolice film imported from France was carried out at Xundian County in 2012 to provide a scientific basis of the utilization and the improvement. The results showed that the biolice film imported from France decomposed obviously after covering 15 days and its cumulative degradation rate closed to 70% after covering 120 days. The bioliee film could replace the current white PE film and hardly affected yield and output of tobacco. But there were still some shortcomings such as reducing the water retention ca- pacity of soil, not promoting tobacco seedlings quick growth, delaying tobacco growth period and restricting main agronomic traits growth of tobacco. Therefore, it＇ s necessary to explore further on its characteristics before expanding the application areas of the biolice film so as to service better for tobacco production.