聚丙烯酸钾盐型保水剂在红壤上的施用效果  

Application of Potassium-polyacrylate Water-retaining Agents in Red Soil

作　　者：高超[1] 李晓霞[2] 蔡崇法[1] 丁树文[1] 邓超[1] 

机构地区：[1]华中农业大学资源与环境学院,武汉430070 [2]湖北省水利厅,武汉430071

出　　处：《华中农业大学学报》2005年第4期355-358,共4页Journal of Huazhong Agricultural University

基　　金：国家"八六三"高科技计划项目;国家自然科学基金项目(40271073)资助

摘　　要：针对第四纪红粘土发育红壤的土壤结构差、保水性能低和南方季节性干旱等特点,进行保水剂施用效果研究,探讨施用不同浓度保水剂(聚丙烯酸钾)对土壤持水特性、土壤结构及其对玉米生长的影响.结果表明施用保水剂能提高土壤持水能力,抑制蒸发,改良土壤结构,有效促进玉米生长.南方红壤施用0.2%的保水剂可以显著改善土壤有效水分的保持与供应,促进1～0.5 mm的土壤团粒结构形成.The study aims at bad soil structure, lower soil moisture-holding capacity and seasonal drought in quaternary red clay region. Studies conducted on the water-retaining properties, soil structure and the effect on corn growth after the water-retaining agent （Potassium-polyacrylate） applied with different dosages. Result shows that after applying of water-retaining agent, the soil moisture-holding capacity was enhanced with the increasing of water-retaining agent, evaporation decreased, soil structure meliorated and promoting corn to grow effectively. Applying 0. 20% water-retaining agents into red soil could significantly increase the water retaining and supplying ability of soil, and increase soil aggregates of grain diameter of 1-0. 5mm.

关 键 词：干旱 保水剂 红壤 聚丙烯酸钾盐型保水剂 施用效果 玉米 

分 类 号：S156[农业科学—土壤学]