农垦科学院去年作了小面积蔬菜地膜覆盖试验。试验结果表明:覆盖薄膜后,对提高土壤温度作用十分明显,平均可提高地温7℃,对土壤保水能力也明显提高,较不覆膜含水率高16—25％,土壤容重减轻0.04—0.18g/cm~3,孔隙度增加2—7％,同时增加了土壤肥力的利用率。从而促进了生长发育,提早出苗4天,提早采收13—15天,前期产量增加130％,全期产量增加185％,达 Last year, Land Reclamation Academy made a small area vegetable film mulching test. The results showed that after the film was covered, the effect on soil temperature was very obvious. The average increase of ground temperature was 7 ℃, and the water retention capacity of soil was obviously improved. The moisture content of the film was 16-25% higher than that of the non-membrane, and the soil bulk density was reduced by 0.04-0.18g / cm ~ 3, porosity increased by 2-7%, while increasing soil fertility utilization. Thus promoting the growth and development, early emergence 4 days, early harvest 13-15 days, pre-production increased by 130%, full-term production increased 185%, reaching