秋施氮肥对冷季型草坪坪用性状的影响及其综合评价  

Effects of fall nitrogen fertilization on characteristics of cool-season turf and its comprehensive evaluation

作　　者：于铁峰[1] 刘晓静[1] 李文卿 蒯佳林[1] 郝凤[1] 常红军[3] 

机构地区：[1]甘肃农业大学草业学院,草业生态系统教育部重点实验室,中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [2]天水市政府,甘肃天水741000 [3]兰州交通大学后勤管理处,甘肃兰州730070

出　　处：《甘肃农业大学学报》2010年第6期144-148,共5页Journal of Gansu Agricultural University

基　　金：甘肃省教育厅项目(032-05)

摘　　要：通过大田试验研究了秋施氮肥(尿素与7种不同类型缓释氮肥)对冷季型混播草坪草生长的影响,并应用灰色关联度分析方法对施肥后45d的草坪进行综合评价.结果表明:速效氮肥能迅速提高草坪草叶绿素及地上生物量(P<0.05),改变草坪草颜色;而缓效氮肥更有利于提高叶片分蘖,减缓草坪生长速度的波动,提高草坪的均一性.灰色关联度分析显示,8种施氮处理草坪坪用性状评价优劣值依次为:SUD1>SUD2>木质素缓释氮肥>SUDT>复合IBDU>有机缓释氮肥>复合MU>尿素,缓效氮肥优于速效氮肥.A field experiment was carried out to study the effects of fall N fertilization （urea and 7 types of slow release nitrogen fertilizer） on the growth of cool-season turf grass,and the turf was comprehensively evaluated by grey relational grade analysis method after fertilized for 45 days.The results indicated that fast-release fertilizer could quickly change the color of turf grass and improve the above ground biomass,while the slow-release nitrogen fertilizer was more conductive to improve the tiller,slow down the growth rate of turf grass,improve the uniformity of turf.The effects of 8 fertilizer showed as followed in the order of evaluating value：SUD1 SUD2 lignin slow-release nitrogen fertilizer SUDT composite IBDUorganic slow-release nitrogen fertilizer composite MU urea.

关 键 词：草坪 缓释肥 灰色关联度分析 

分 类 号：S688.4[农业科学—观赏园艺]