摘要
从紫茎泽兰形态特征、物候周期、生长节律以及生态适应性等方面进行了研究,结果表明：紫茎泽兰为多年生草本;每年开花1次,孕蕾期为1月中旬至2月下旬,现蕾期为2月中旬至3月下旬,开花期为3月中旬至4月中旬,种子成熟期为4月上旬至4月中旬,散布期为4月中旬至4月下旬,休眠期为4月下旬至5月下旬,生长期从5月中旬至异年开花,物候期有部分重叠现象;7~8月是紫茎泽兰快速生长期,进入9月生长减弱,到10月基本停止生长;紫茎泽兰不仅生长于酸性土壤,在碱性石灰土上也有分布,分布区pH值为5.6~7.8;耐水,耐旱耐瘠薄,抗干扰性强,抗病性较强。
In order to find a solution for the control of Eupatorium adenophorum Sprengel,a further study on the biological and ecological characteristics of Eupatorium adenophorum Sprengel was conducted including its morphology,phenology,growth rhythm,and ecological adaptability（adaptivity）.The results were as follows： Eupatorium adenophorum Sprengel is a perennial herb,flowering once a year,including several stages： bud bearing stage（from the second days of January to the last ten days of February）,budding stage（from the second ten days of Feb.to the last ten days of March）,blooming stage（from the second ten days of March to the second ten days of April）,seed maturity stage（from the first ten days of April to the second）,seed spreading stage（from the second ten days of April to the last）,hibernation stage（from the last ten days of April to the last ten days of May）,growing stage（from the second ten days of May to the next year＇s flowering time）.Phonological period is overlapped partly.The fastest growing period is from July to August,slower in September,and stops by October.Not only is the weed distributed in acid soil,but it is also found in alkaline soil,and the PH Value of its distribution area is 5.6-7.8.It was resistant to water,drought,barren,and diseases.
出处
《贵州林业科技》
2010年第3期42-44,48,共4页
Guizhou Forestry Science and Technology
基金
国家林业局2005年林业有害生物除治试点项目
关键词
紫茎泽兰
生物生态学
形态特征
物候周期性
生长节律
生态适应性
Eupatorium adenophorum Sprengel
Bio-ecology characteristics
Morphology
Phenological period
Growth rhythm
Ecological adaptability.
