4种环境因子对芒种子萌发及幼苗生长的影响  

Effects of four environmental factors on the seed germination and seedling growth of Miscanthus sinensis

作　　者：郑铖 肖亮[2,3] 陈智勇[1] 易自力[1,3] 

机构地区：[1]湖南农业大学生物科学技术学院,湖南长沙410128 [2]湖南农业大学生物质醇类燃料湖南省工程实验室,湖南长沙410128 [3]湖南农业大学芒属植物生态应用技术湖南省工程实验室,湖南长沙410128

出　　处：《草业科学》2016年第11期2254-2258,共5页Pratacultural Science

基　　金：作物种质创新与资源利用国家重点实验室培育基地开放项目(15KFXM02);国家科技支撑计划(2013BAD22B01)

摘　　要：为研究芒(Miscanthus sinensis)种子的萌发特性,探究了不同温度、光照时间、土壤含水量和播种深度对芒种子萌发及幼苗生长的影响。结果表明,1)25℃为芒种子的最适萌发温度,低于10℃时,抑制其种子萌发及幼苗生长;2)光照时间对芒种子萌发率无影响,但对萌发指数、活力指数及幼苗生长有显著(P<0.05)影响,光照12h为最适光照时间;3)芒种子最适宜的土壤含水量为10%,土壤含水量25%时,芒种子萌发受到显著(P<0.05)抑制;4)播种深度对芒种子出苗与建植影响较大,3mm播种深度最为适宜。综上所述,本研究为芒进行温室育苗与大田建植提供了科学依据。In order to study the germination characteristics of Miscanthussinensisseeds,the influence of temperature,light time,soil water content and sowing depth on the seed germination and seedling growth were studied.The results indicated that the optimal temperature for M.sinensis seed germination was 25 ℃,and seed germination and seedling growth were inhibited under less than 10 ℃ treatment.The light time significantly influenced（P〈0.05）the germination index,vigor index and seedling growth,and the optimal light time was 12 halthough it had no effects on the germination rate.The most optimal soil water content was 10%,and M.sinensis seed germination were seriously inhibited（P〈0.05）under 25% soil water content treatment.4）Sowing depth had significantly（P〈0.05）influence on the emergence rate and seedling growth.The most appropriate sowing depth was 3mm.These results presented the information of the M.sinensis seed germination in the greenhouse and field.

关 键 词：芒 温度 光照时间 土壤含水量 播种深度 种子萌发 

分 类 号：S578[农业科学—作物学]