液体地膜覆盖保水效应研究  

Study on Water-Retention Effect of Liquid Film Mulching

作　　者：杨青华[1] 韩锦峰[1] 贺德先[1] 刘华山[1] 

机构地区：[1]河南农业大学农学院,郑州450002

出　　处：《水土保持学报》2004年第4期29-32,共4页Journal of Soil and Water Conservation

基　　金：河南省科技攻关项目(991030304)

摘　　要：采取室内与大田试验相结合的方法,研究了液体地膜覆盖保水效应。结果表明:液体地膜覆盖显著降低水分蒸发。用于土壤保水目的的产品为E,使用浓度20～25倍,适宜用量为112.5～150.0kg/hm2;而用于抑制水面蒸发目的的产品为D,适宜用量为75kg/hm2。By laboratory and field experiments, effects of mulching with liquid film on water conservation were studied in 2002~2003. The results showed that evaporation could be remarkably reduced when liquid film covering was used. However, the product 'E', sprayed at 112.5～150.0 kg/hm^2 with 20～25 time water, was the best for soil water conservation. The product 'D', at 75.0 kg/hm^2, was the best for reducing water surface evaporation.

关 键 词：液体 地膜覆盖 保水效应 使用浓度 

分 类 号：S152.7[农业科学—土壤学] S157.9[农业科学—农业基础科学]