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.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
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
