| 摘要 |
Transparent plastic sheet having an approximate thickness of between 10 and 50 micrometers, to improve the efficacy of disinfection of agricultural soil by the technique known as solarization, characterised by incorporating, by melted mixture, between 0.1 and 5%, but preferably between 0.5% and 3% of an anionic surfactant, thus giving it hydrophilic properties, permitting the water vapour to condense on its surface in the form of a continuous sheet instead of in spherical drops, thus permitting a significant increase in the transmission of solar energy and consequently of the temperature of the soil being disinfected, substantially improving the efficacy of the solarization, this being understood as a greater reduction of pathogenic germs in the same time, a reduction in the solarization time to obtain the same level of destruction of pathogenic germs or the possibility of using it in milder climates. Optionally, it may include a micronized and micro-porous mineral load which absorbs the surfactant, acting on the sheet as a dosifier thereof, thus allowing a reduction in the effect of the washing and drawing off of the condensed water and thus increasing the duration of the hydrophilic effect. <IMAGE> |
