覆盖保温材料是日光温室进行果菜生产的必要措施.通过大量可靠的试验数据和令人信服的试验结果表明,用无纺布代替牛皮纸被作为日光温室的第二层覆盖保温材料,不仅可行而且价格便宜,使用寿命长,保温效果好,二者比较,无纺布平均保温效果要比牛皮纸被高2-3℃,寿命可延长一倍以上,投 Covering the insulation material is a necessary measure for the production of fruits and vegetables in the solar greenhouse.Through a large number of reliable test data and convincing test results show that the use of non-woven kraft paper as the second layer of solar greenhouse cover insulation material, not only feasible and the price Cheap, long service life, thermal insulation effect is good, the two comparison, the average insulation effect of non-woven fabric is higher than kraft paper 2-3 ℃, life expectancy can be extended more than doubled, investment