覆土和灌水对串叶松香草越冬率与产草量的影响  

Effect of Covering Soil and Irrigation on Overwintering Rate and Yield of Silphium perfoliatum L.

作　　者：伏兵哲[1] 米福贵[1] 刘瑞芳[2] 撒多文[1] 郝向伟[3] 

机构地区：[1]内蒙古农业大学生态环境学院,内蒙古呼和浩特010019 [2]呼和浩特市园艺科技试验中心,内蒙古呼和浩特010070 [3]内蒙古鄂尔多斯市准格尔旗气象局,内蒙古010300

出　　处：《中国草地学报》2010年第5期106-109,共4页Chinese Journal of Grassland

基　　金：国家科技支撑项目(2006BAD10A19-8);内蒙古科技支撑项目(20071923)

摘　　要：对冬季休眠的串叶松香草进行了覆土和灌水保护处理研究,结果表明:覆土和灌水对提高串叶松香草越冬率和产草量十分有效,其中冬前灌冻水和春季返青前灌返青水可以使串叶松香草的返青期较对照提前6d;冬前根际覆土和灌越冬水可以使越冬率提高47%以上,根蘖芽数增加2.1个,单株鲜草产量和干草产草量分别增加0.54kg和0.138kg。The effects of covering soil and irrigation on overwintering rate and yield of Silphium perfoliatum were studied.The results showed that overwintering rate and yield of S.perfoliatum were increased significantly by covering soil and irrigation.Returning green stage of S.perfoliatum was advanced for 6 days byirrigation before winter and returning green stage.Overwintering rate,overwintering bud,fresh and dry forage yield were increased by 47%,2.1,0.54kg and 0.138kg respectively by covering soil and irrigation before winter.

关 键 词：越冬率 覆土 串叶松香草 产草量 

分 类 号：S54[农业科学—作物学]