不同季节断根对滇润楠根系发育的影响  

Effect of Root Pruning Treatments in Different Seasons on Root Development of Machilus Yunnanensis

作　　者：陈强[1] 张学星[1] 周筑[1] 毕波[1] 刘云彩[1] 孙宏[1] 

机构地区：[1]云南省林业科学院,昆明650204

出　　处：《广西林业科学》2011年第2期112-115,共4页Guangxi Forestry Science

基　　金：云南省科技创新强省计划项目(2007AB006)子专题

摘　　要：滇润楠(Machilus yunnanensis)不同季节断根对比试验结果表明:滇润楠新根的萌发与断根季节的气候因素有较大关系,新根萌发时间与温度紧密相关而与湿度关系不大,根系萌发状况与断根季节的温度和降水量紧密相关,而与相对湿度和蒸发量关系不大。断根时的温度愈高,新根的萌发时间愈早;断根时的温度、降水量愈高,根系的发育愈好。滇润楠适宜在春季和夏季进行苗木断根处理,不宜在秋季和冬季进行。The comparison experiments of root pruning treatments in different seasons were conducted.The result showed that the sprouting of new roots of Machilus yunnanensis was closely related with the climatic factors in root pruning seasons.Its sprouting time of new roots was tightly correlated with the temperature,while barely with humidity.The root growth of root pruning had close relations with the season temperature and the precipitation,but the relations with the relative humidity and the transpiration rate was not close.The higher temperature of root pruning was,the earlier the sprouting time of new roots was.The higher temperature of root pruning and the precipitation were,the better root growth was.The root pruning treatments of M.yunnanensis was suitable in spring summer,but not in autumn and winter.

关 键 词：滇润楠 断根 根系发育 

分 类 号：S723[农业科学—林木遗传育种]