聚合物包膜尿素氮释放特性及其对高羊茅草坪生长的影响  

Evaluation of Nitrogen Release Feature of Macromolecule Polymer Coated Urea and Effects on Tall Fescue Turf Growth

作　　者：谷佳林[1] 许俊香[1] 徐秋明[1] 边秀举[2] 李会彬[2] 曹兵[1] 

机构地区：[1]北京市农林科学院植物营养与资源研究所,北京100097 [2]河北农业大学草坪研究所,河北保定071001

出　　处：《园艺学报》2009年第3期385-390,共6页Acta Horticulturae Sinica

基　　金：北京市科技新星计划项目(2005B37);北京市科委新型肥料产业化科技保障建设项目(D0706004000091);北京市农林科学院青年基金项目(2007020414);北京市优秀人才培养项目(20071D020500055)

摘　　要：通过静态水溶试验和草坪施肥试验,研究了高分子聚合物包膜尿素(PCU)的养分释放特性及春季一次性施用对高羊茅草坪生长的影响。结果表明,由于肥料所处环境温度不同导致实验室静态水溶法测定PCU养分释放速度快于其在田间的实际释放速度。田间试验中一次性施用该肥料可以满足高羊茅草坪整个春季生长对氮素养分的需要;与尿素和市场上的草坪肥料相比,草坪质量无显著差异,且草坪生长速度均匀,草屑量相对较少,起到了减少草坪修剪次数降低养护强度的作用。The nitrogen release characteristic of macromolecule polymer coated urea（PCU）by laboratory method of water dissolve and the effects of applied PCU on tall fescue turf as basal application in spring was studied.The results showed that the rate of PCU nitrogen release by laboratory method of water dissolve is faster than the rate in the turf field because of their different circumstance temperature affect.Applying PCU once in early spring could meet nitrogen need of tall fescue growth in spring season.Compared with urea and turf special fertilizer,no significant difference was observed in turf quality.So,applied PCU play an important role in reducing turf maintenance strength through keeping even growth of turfgrass and less clippings production.

关 键 词：高羊茅 包膜尿素 初期溶出率 微分溶出率 草坪质量 

分 类 号：S688.4[农业科学—观赏园艺] TG154.4[农业科学—园艺学]