摘要
通过培养试验研究了聚氨酯膜、渗水布膜覆盖物和聚丙烯酸钠 (保水剂 )、聚乙烯醇、聚丙烯酰胺、海藻糖蒸发抑制剂对土壤蒸发的影响。结果表明 :聚氨酯膜、渗水布膜对黑垆土蒸发有极显著影响 ,聚氨酯膜与渗水布膜的抑制作用差异极显著 ;聚氨酯膜对沙土蒸发有显著的抑制作用 ;几种抑制剂对土壤蒸发的抑制作用以保水剂最好 ,其效果随用量的增加而增大 ;沙土中加入海泡石或草炭 。
Pot trails were conducted to study effects of polyurethane membrane, water percolating membrane and four inhibitors, including sodium polyacrylate,polyvinyl alcohol,polyacryloamide and mycose on soil evaporation.Results showed,both of membranes slowed down evaporation in Heilu soil significantly,and the effect of polyurethane membrane was obviously higher than that of water percolating membrane. Polyurethane membrane slowed down evaporation in sandy soil significantly. The effect of sodium polyacrylate was higher than that of other inhibitors, also increased with the increase of its does. Effects of inhibitors coupled with sepiolite or turf were increased.
出处
《水土保持研究》
CSCD
2003年第1期133-136,共4页
Research of Soil and Water Conservation
基金
国家科技攻关项目 (2 0 0 1BA5 0 8B18)
关键词
覆盖物
抑制剂
土壤蒸发
membrane
evaporation inhibitor
soil evaporation
