自60年代采用塑料薄膜培育烟苗以来,塑料薄膜培在烟烟草生产上已显示了很大的优越性,由于它的保温特性,可以实现早播种、早出苗、早移栽,并且使育出的烟苗整齐一致,生长健壮,为优质高产打下良好的基础. 但是,近两年来,有的地方发生塑料薄膜毒害烟苗的现象,用有些塑料薄膜覆盖的烟苗,不长,发黄,最后枯死,对生产造成很大损失,对生产队的财政开支也带来了困难,因此,有关单位必须提高警惕,严防再次发生类似的事故. 一般称作塑料薄膜,实际上是聚氯乙烯薄膜或聚乙烯薄膜,农业生产上使用的大部分为聚氯乙烯薄膜.因为这种薄膜比聚乙烯薄膜经久耐用.造成塑料薄膜毒害烟苗的原因是,这种薄膜内含有一种有毒的增塑剂——苯二甲酸二异丁酯.增塑剂是生产塑料薄 Plastic film has shown great advantages in the production of tobacco since its application in the 1960’s when plastic film was used to grow tobacco seedlings. Due to its thermal insulation properties, early seeding, early emergence, early transplanting and breeding Of the tobacco plant neat and consistent growth robust, for good quality and high yield lay a good foundation.However, the past two years, plastic film poisoning in some places the phenomenon of tobacco seedlings, with some plastic film covered tobacco, not long, yellow, Finally, dead, causing great loss of production, the financial costs of the production team has also caused difficulties, therefore, the relevant units must be vigilant to prevent the recurrence of similar incidents generally known as plastic film, in fact, is a polyvinyl chloride film Or polyethylene film, the majority of agricultural production on the use of polyvinyl chloride film, because this film is more durable than polyethylene film caused by the plastic film poison tobacco seedlings is that this film contains a toxic plasticization Agent - diisobutyl phthalate plasticizer is the production of plastic sheeting