不同地膜覆盖对土壤温度及烤烟生长发育的影响

Effects of Different Plastic-film Mulching on Soil Temperature and Growth and Development of Flue-cured Tobacco

试验通过对调光膜、双色膜和普通膜3种不同地膜覆盖的烤烟栽培试验,研究不同处理条件对耕层土壤温度及烤烟生长发育的影响。结果表明,移栽40 d后,不同时间段土层5 cm的调光膜、普通膜、双色膜3种膜之间的温度差异显著,土层10 cm调光膜与普通膜无差异显著,而普通膜与双色膜地温差异显著,土层15 cm的3个处理间无显著差异;栽后60 d进入6月中下旬,3种膜内升温的幅度是调光膜>普通膜>双色膜;移栽后80 d后,3种地膜各土层的土壤温度之间都有显著差异,其中,烟株长势的大小排列是双色膜>普通膜>调光膜,保温性能的大小排列是调光膜>普通膜>双色膜,保水性能的大小依次是双色膜温>普通膜温>调光膜温。

A field experiment was carried out to study the effects of the different plastic-film mulching on soil temperature and growth and development of flue-cured tobacco. The results were listed as follows. The 40 days after transplanting, there was significant difference among the three kinds of plastic film mulching on the ground temperature of soil layer in depth 5 cm,while the ground temperature of soil layer （15 cm）had no difference;The 60 days after transplanting, the temperature rise range order was the dimming film, ordinary film, double color film;The 80 days after transplanting, there was significant difference among the three kinds of plastic film mulching on the different soil layers temperature, the film affecting flue-cured tobacco growth order was the double color film, ordinary film, dimming film, the thermal insulating property order was the dimming film, ordinary film, double color film, the water-preserving properties order was the double color film, ordinary film, dimming film.