转光驱虫聚乙烯农用薄膜的研究

Investigation on Light-Conversion and Helminthic Polyethylene Greenhouse Films

以荧光材料为转光剂、氟虫隆与乙虫脒为驱虫剂、滑石粉为保温剂,制成转光驱虫聚乙烯农用薄膜,考察了转光剂对荧光发射光谱、驱虫剂对驱虫率、滑石粉对红外透过率的影响,并进行了农田应用研究。结果表明,与普通聚乙烯农用薄膜相比,采用转光驱虫聚乙烯农用薄膜增强了棚内红光或蓝光强度,棚内温度提高了0．8～2．6℃,驱虫率为90．5％～97．8％,驱虫时效长达3个月,作物产量提高了14．5％～25．8％,同时,作物的营养品质也得到了相应的提高。

The light-conversion and helminthic polyethylene greenhouse film was prepared using fluorescence material as the light-conversion reagent; fluenoxuron and acetamiprid as the helminthic reagent; and talcum powder as the heat-preservation reagent. The effects of the light-conversion reagent on the fluorescence spectrum, the helminthic reagent on the helminthic ratio, and talcum powder on the infrared transmittivity were investigated. Compared with the common polyethylene greenhouse film, the intensity of red or blue light inside the greenhouse covered with the light-conversion and helminthic polyethylene film was enhanced, the temperature of the greenhouse was increased by 0.8--2.6 ℃, the helminthic ratio was 90.5 % --97.8 %, the effective helminthic time was three months and the production was increased by 14.5 % --25.8 %. Besides, the nutritional performance of crops was improved.