新型包膜肥在早熟禾上的试验研究  

Application of Homemade-Coated Fertilizers on Poa Pratensis

作　　者：韩晓日[1] 刘兴斌[1] 孙振涛[1] 战秀梅[1] 王月[1] 刘小虎[1] 

机构地区：[1]沈阳农业大学土地与环境学院,辽宁沈阳110161

出　　处：《土壤通报》2007年第2期305-309,共5页Chinese Journal of Soil Science

基　　金：国家"863"计划资助项目(2001AA264021);辽宁省"十五"重大攻关项目(2001208002)资助

摘　　要：通过自制长效包膜肥与常规施肥在草地早熟禾盆栽上的试验研究表明,在同一施肥量的情况下作基肥一次施入,长效包膜肥在整个试验期间可以满足早熟禾整个试验期对养分的需求,但常规施肥则出现了缺肥症状。包膜肥加工过程及加入缓释剂对N素养分和P、K养分的释放规律有所不同:缓释剂的加入有利于提高N肥效但却加速了肥料中P、K的释放;包膜却对N、P、K均有延缓释放的作用。Pot experiments were carried out during May to October in 2003 to investigate the release characteristics of the homemade- coated fertilizers for poa pratensis growth. The result indicated that the coated fertilizers could supply nutrition, but nutrient- lacking symptom appeared on the treatments applied with common fertilizers. The nutrition release rule of the homemade fertilizer was different between nitrogen and phospho added. The use efficiencies of N, P and K were enhanced when the inhibitor was rus or potassium when the inhibitor was added. Also the coated fertilizer could prolong the N, P and K release rate.

关 键 词：早熟禾 包膜肥料 缓释剂 肥料利用率 

分 类 号：S145.6[农业科学—肥料学]