Virtually impermeable film
英 美
不透膜
不透膜
Two times experiments of dosage reduction of methyl bromide(MB) and covering virtually impermeable film(VIF) were carried out in Qingzhou city(Shandong province, China) from 2001 to 2003 year.
2003年在山东省青州市温室中进行了2次减量甲基溴、覆盖不透膜（VIF膜）土壤消毒试验。
