不同缓释氮肥对冷季型草坪生长特性及品质的影响  

Effect of different slow-release nitrogen fertilizers on growth characteristics and quality of cool-season turf

作　　者：于铁峰[1] 李文卿 刘晓静[1] 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绿化中心,甘肃兰州730070

出　　处：《草原与草坪》2010年第2期38-42,共5页Grassland and Turf

基　　金：甘肃省教育厅项目(032-05)资助

摘　　要：通过大田试验研究速效肥(尿素)与3种缓释氮肥(SUD、IBDU、MU)对冷季型混播草坪草叶绿素含量、密度、生长速度、质地的影响,结果表明:施肥7 d后,尿素处理叶绿素含量与CK相比增加了42.9%,SUD、IBDU、MU处理与CK相比分别增加了34.7%,34.7%和32.7%,施肥60 d后,尿素处理叶绿素含量与CK相比增加28.5%,SUD、IBDU、MU处理与CK相比分别增加了44.5%,38.0%和32.5%;SUD缓释氮肥使草坪密度增加达122.2%,最差的MU缓释氮肥草坪密度为68.9%,均好于尿素42.5%;施肥后60 d,SUD处理草坪草盖度达到98%,尿素处理为94%,CK为87%。参照综合外观质量法对各处理草坪进行评价,CK、尿素、SUD、IBUD、MU得分分别为14、18、21、20、19。CK处理草坪评价为"差",SUD处理草坪评价为"良好",其余均评价为"中等"。The effects of 3 slow-release nitrogen fertilizers（SUD,IBDU and MU）and fast-release fertilizer（urea）on chlorophyll content,density,growth rate and texture of turfgrass were studied through field experiment.The results indicated that after fertilization for 7 days,the chlorophyll content under urea treatment was increased by 42.9% compared with CK.And under SUD,IBDU and MU treatments they were increased by 34.7%,34.7% and 32.7% respectively.After fertilization for 60 days,the chlorophyll content under urea treatment was increased by 28.5% compared with CK,and under SUD,IBDU and MU treatments they were increased 44.5%,38.0% and 32.5% respectively.The turfgrass density reached 122.2 % under SUD treatment which was the best and it reached only 68.9% under MU treatment,all of them were better than urea.After fertilization for 60 days,the turfgrass coverage under SUD,urea and CK was 98%,94% and 87% respectively.Based on the Comprehensive Appearance Quality Evaluation,the scores of CK,urea,SUD,IBUD and MU treatments were 14,18,21,20 and 19.The evaluation result for CK was ＂bad＂ and for SUD was ＂good＂,the others were ＂moderate＂.

关 键 词：缓释肥 草坪草 草坪品质评价 

分 类 号：S482.8[农业科学—农药学]