摘要
为了解少花蒺藜草(Cenchrus pauciflorus Benth)在通辽地区的发生情况、发生特点、发生的危害性,2008年开始对少花蒺藜草进行全市调查统计,2015—2017年设立长期定位监测点。调查结果表明:少花蒺藜草的侵害呈快速蔓延趋势;监测点少花蒺藜草平均盖度分别为19.7%、21.0%、24.7%,种子库分别为199,210,231粒/m2;2016年通辽地区少花蒺藜草发生面积占全国的79.8%,是少花蒺藜草入侵的重灾区。根据危害等级划分,通辽地区为3级重度发生。若不及时采取有效的防控措施,将严重危害当地农牧业的发展,造成难以挽回的经济损失,威胁生态系统安全。
The occurrence, characteristics, negative impacts and main control measures of Cenchrus pauciflors Bentham in Tongliao were investigated since 2008, and the long-term positioning monitoring was set up from 2015 to 2017. The average coverage of Cenchrus pauciflors Benthanl was 19.7%, 21.0% and 24.7%, attd the seed bank was 199,210,and 231 seeds/m^2 in these 3 years. In 2016, the area of Cenchruspauciflors Bentham occurring in Tongliao region accounted for 79.8% of the country. According to hazard grade, in Tongliao it was classified as a level 3 severe occurrence. It will seriously endanger the development of local agrieuhure and animal husbandry, cause irreparable economic losses and threaten the safety of the ecosystem if effective prevention and control measures are not taken in time.
作者
张福胜
姚影
ZHANG Fusheng;YAO Ying(Tongliao Agricultural Technology Extension Station,Tongliao 028000,China)
出处
《北方农业学报》
2018年第5期98-101,共4页
Journal of Northern Agriculture
关键词
外来入侵物种
少花蒺藜草
危害性
防治措施
Alien invasive species
Cenchrus pauciflorus Bentham
Harmfulness
Control measures
