氮肥对冷季型混播草坪返青期生长特性的影响  

Effect of nitrogen application quantity and frequency on the growth performance of cold-season turfgrass in regreening period

作　　者：张鹤山[1] 刘晓静[1] 张德罡[1] 邱惠珍[2] 陈建纲[1] 林金宝[1] 谈嫣蓉[1] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070 [2]甘肃农业大学资源与环境学院,甘肃兰州730070

出　　处：《草原与草坪》2006年第2期19-23,共5页Grassland and Turf

基　　金：甘肃省教育厅项目"西北地区冬季草坪延长绿期措施及机制研究"(0390975)

摘　　要：对不同施氮量和施氮频率下冷季型混播草坪返青期生长特性的研究表明：施氮对草坪质地无显著影响，在施氮20g／m^2·a、施氮频率为2次的处理下，草坪的高度和密度最大；单位面积草坪地上植物积累量以施氮肥25g／m^2·a的处理最高，而施氮频率对其无显著影响；施氮量在0～25g／m^2·a时，草坪草地上植物积累量与施氮量呈显著正相关；高施氮量有利于草坪草春季的返青，返青最早的施氮处理为25g／m^2·a。The effects of different nitrogen application quantity and frequency on the growth performance of cold-season turfgrass grass texture was not 25 g Nand two times in regreening stage were studied. The results showed that the effect of nitrogen on turfsignificant. The growth speed and height of turfgrass were highest under the treatment of in one year,and the density of turf was highest as well. When applied nitrogen changed between 0 and 25 g/m^2a the aboveground phytomass of turfgrass increased along with the rise of nitrogen application quantity,but it was not influenced by fertilizing frequency. The regreening date was significantly brought forward under the treatment of 25 g N in a year compared with other treatments.

关 键 词：施氮量 施氮频率 草坪草 返青期 草坪质量 

分 类 号：S688.4[农业科学—观赏园艺]