施肥对沟叶结缕草生长及生理特性的影响  

Effects of fertilizing on the manilagrass growth and physiological characteristics

作　　者：钱永生[1,2] 朱江敏[1] 吴剑丙[1] 张晓勤[1] 柴明良[2] 

机构地区：[1]杭州师范大学生命与环境科学学院,浙江杭州310036 [2]浙江大学园林研究所,浙江杭州310029

出　　处：《草业学报》2012年第3期234-241,共8页Acta Prataculturae Sinica

基　　金：浙江省教育厅项目(Y201121340)资助

摘　　要：通过对处于生长期沟叶结缕草进行施肥试验,测定草坪的叶绿素、丙二醛、过氧化氢酶的含量,分析生长量的变化与颜色、密度、均一性等各项生理指标的关系,确定适宜沟叶结缕草生长的最佳施肥策略。草坪生长指标结果表明,尿素的颜色分值显著高于复合肥和液态肥,对草坪的转绿有显著效果;液态肥的均一性在三者最好,草坪长势均匀;复合肥的累积肥效密度值大于尿素和液态肥,保持后期草坪正常生长。浓度为15kg/667m2的尿素实验组成效最显著,表现为叶绿素含量最大,草坪草色泽鲜绿,生长茂盛;喷施浓度为1 000倍的液态肥后草坪丙二醛(MDA)含量达到0.189×10-2μmol/g FW,有效缓解逆境草坪,恢复其生长,持续时间较短;浓度为25kg/667m2的复合肥持久性最好,有效提高草坪过氧化氢酶(CAT)活力。The present study demonstrated the optimal fertilizing strategy for normal growth of manilagrass in the long growth stage through the experiments of fertilization,analyzing the interaction of changing in mass growth,colour,density,uniformaity of lawn and the content of chlorophyll,malondialdehyde,catalase and other physiological factors of manilagrass.The results of manilagrass growth factors indicated,the colour score of urea was better than the compound fertilizer and liquid fertilizer with significant effect on turning green in the lawn.The liquid fertilizer could promoted lawn grow uniformly;and the density of accumulation of compound fertilizer was best among the three types of fertilizers,provided the necessary fertilizer for lawn normal grwth at later stage.The treatments of urea with concentration of 15 kg/667 m2 was the best for the highest chlorophyll content,bright green colour and flourishing;the treatment of liquid fertilizer（1 000×） improved the MDA（malondialdehyde） to 0.189×10-2μmol/g FW,recovering normal growth and alleviating the growth stress for short period;the treatment of compound fertilizer（25 kg/667 m2） effectively enhanced the activity of CAT（catalase） for long time.

关 键 词：沟叶结缕草 施肥 叶绿素 丙二醛 过氧化氢酶 生长量 

分 类 号：S688.4[农业科学—观赏园艺]