加拿大一枝黄花植物在湘潭的危害性及其防除措施

Damage and Control Measures for Solidago Canadensis L in Xiangtan

加拿大一枝黄花为我国重要的林业检疫有害植物,湖南湘潭于2004年首次发现。调查结果表明,加拿大一枝黄花在湘潭市已扩展蔓延500hm2,其中I级危害面积占总发生危害面积的19.8%,Ⅱ级占23.6%,Ⅲ级占16.2%,Ⅳ级占40.4%。加拿大一枝黄花的分布和危害与其周围的生态环境有着密切的关系,在长期不管理或管理粗放的区域,其生长茂盛,密度高,危害级别也高;而在各种栽培管理措施到位的区域,基本没有分布或危害程度较轻。加强田园栽培管理措施,采用人工拔除和用草甘膦、农达等灭生性除草剂进行防治,是目前有效的防除措施。

Solidago Canadensis L is an important quarantine injurious plant,which is firstly discovered in the year of 2004 in Xiangtan.The investigation results showed that Solidago Canadensis L has spread to 500 hm^2 in Xiangtan City,of which,Grade Ⅰ damage area took up 19.8 % of occurrence area;Grade Ⅱ ,23.6 %; Grade Ⅲ ,16.2 %;Grade Ⅳ ,40.4 %.The distribution and damage of Solidago Canadensis L enjoyed close relationship with its surrounding ecological environment .For example ,in the district where no management for a long time or in the district where only with extensive management,it grows gloriously with high density and high damage grade;however,in the district where different cultivation ＆ management measures had been made, basically, no distribution or light damage grade has been discovered.In the present, the effective control measures are as follows：to enhance field cultivation ＆ management measures,to control it through artificial picking up, through sterilant herbicide as Glyphosate and Nongda.